WO2012028670A1 - Verfahren zur erstellung einer aufnahme aus einem 3d-volumen - Google Patents
Verfahren zur erstellung einer aufnahme aus einem 3d-volumen Download PDFInfo
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- WO2012028670A1 WO2012028670A1 PCT/EP2011/065065 EP2011065065W WO2012028670A1 WO 2012028670 A1 WO2012028670 A1 WO 2012028670A1 EP 2011065065 W EP2011065065 W EP 2011065065W WO 2012028670 A1 WO2012028670 A1 WO 2012028670A1
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- WIPO (PCT)
- Prior art keywords
- volume
- sub
- image data
- projection
- teeth
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims description 39
- 210000000214 mouth Anatomy 0.000 claims description 12
- 230000006870 function Effects 0.000 claims description 11
- 238000002591 computed tomography Methods 0.000 claims description 10
- 238000011983 digital volume tomography Methods 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 7
- 238000011156 evaluation Methods 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 claims description 4
- 210000003254 palate Anatomy 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000003325 tomography Methods 0.000 claims description 2
- 238000011835 investigation Methods 0.000 claims 1
- 238000003745 diagnosis Methods 0.000 description 12
- 208000002925 dental caries Diseases 0.000 description 8
- 230000011218 segmentation Effects 0.000 description 6
- 210000003484 anatomy Anatomy 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 210000004283 incisor Anatomy 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 210000004195 gingiva Anatomy 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 210000001847 jaw Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003909 pattern recognition Methods 0.000 description 2
- 238000012567 pattern recognition method Methods 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 238000002083 X-ray spectrum Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007621 cluster analysis Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 210000002455 dental arch Anatomy 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 210000004268 dentin Anatomy 0.000 description 1
- 210000004513 dentition Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003708 edge detection Methods 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 210000004086 maxillary sinus Anatomy 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000000332 tooth crown Anatomy 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/003—Reconstruction from projections, e.g. tomography
- G06T11/008—Specific post-processing after tomographic reconstruction, e.g. voxelisation, metal artifact correction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
-
- A61B6/51—
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/08—Volume rendering
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/46—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with special arrangements for interfacing with the operator or the patient
- A61B6/461—Displaying means of special interest
- A61B6/466—Displaying means of special interest adapted to display 3D data
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2210/00—Indexing scheme for image generation or computer graphics
- G06T2210/41—Medical
Definitions
- the invention relates to a method for producing a recording from a 3D volume with volumetric image data of a mandibular arch and of teeth.
- DE 101 08 295 A1 discloses a method and an arrangement for identifying objects, in particular teeth, based on a digitized X-ray image, using image processing hardware. gorithms are bounded by segmentation and / or edge detection ion contained in the object areas and linked with parameters of the X-ray device and possibly the patient to specific parameters computationally.
- a method is disclosed in which the determination of the objects takes place manually or automatically, wherein in one step the object is selected for which further information is to be stored, retrieved or deleted, and in a further step a reference in relation to the object to determine the information that is presented based on this reference.
- the image data of the digitized X-ray image are computer-aided, the methods of edge finding and segmentation applied and grouped the edges and segments determined by means of the so-called cluster formation.
- the patent US 5,179,579 discloses a method for displaying intraoral radiographs.
- the intraoral radiographs are recorded, digitized and combined with a symbol of a part of the anatomy of which the
- X-ray taken is displayed.
- the images of the anatomical areas are displayed on a screen with the respective symbol according to their normal anatomical arrangement.
- the symbol is used by the user to select the respective radiograph of an area of the anatomy.
- a symbol a reduced image of the dentition, a row of teeth or the individual teeth can be used.
- US 6,190,042 B1 discloses a device for improved intraoral radiographs.
- the device includes a bite block, a guide bar, a target ring and an additional ring.
- the bite block holds a film holder that is perpendicular to the top of the bite block.
- the guide rod is connected to the bite block.
- a disadvantage of the aforementioned devices and methods of the prior art is that to create the intraoral recording an expensive device must be positioned and fixed in the patient's mouth, this device usually has a bite block for fixation, and as a recording means an X-ray film or a digital x-ray sensor is arranged on this device in the oral cavity of the patient.
- the positioning of this device is made more difficult by the fact that the patient, when biting, alters the relative position of the device to the upper jaw and that the distance of the receiving element from the teeth is unknown.
- DE 10 2008 008 733 A1 discloses a method for producing a slice recording, wherein a digital 3D volume which has X-ray absorption values, in particular a dental X-ray
- Panoramahichtaufnähme is generated, wherein the 3D volume as the object to be recorded virtually irradiated with a virtual X-ray source and the virtual resulting image is recorded with a virtual detector.
- the virtu- Both the X-ray source and the virtual detector are virtually moved past the object to be formed to form a sharp layer with a blur proportion.
- the width of the virtual detector, the fanning of the virtual fan beam and the simulated rotational speed of the virtual X-ray source and the virtual detector is variable to influence the thickness and the position of the recorded sharp layer.
- a fixed subregion is selected from the 3D volume, the extent of which corresponds to the sharp layer, wherein a panoramic image is generated in a virtual irradiation of the subregion perpendicular to the course of the subregion.
- a drawback of this method is that the virtual panoramic image, in contrast to intraoral projection images, represents a distorted image of the entire mandibular arch, thereby making the diagnosis of certain findings difficult.
- the object of this invention is therefore to produce a two-dimensional projection recording at a defined recording volume.
- An object of the present invention is a method for creating a virtual dental recording from a 3D volume with volumetric image data. From the 3D volume, a partial volume is first determined. For this sub-volume, a virtual projection image is generated from a specific transmission direction by computer-aided billing of the volumetric image data in this through-beam direction.
- the 3D volume may be a three-dimensional x-ray taken using any three-dimensional x-ray imaging technique, such as DVT or CT, and where the volumetric image data may consist of voxels with x-ray absorption values.
- the 3D volume may also be recorded by other imaging techniques such as MRI.
- the 3D volume can be from the entire mandibular arch with teeth or part of it.
- the volumetric image data of the 3D volume may be constructed from voxels, vector elements or a combination of voxels and vector elements.
- the volumetric image data may also consist of point clouds containing vector elements.
- a specific partial volume with an arbitrary base area and a specific depth in the direction of transmission is selected.
- a virtual projection image is generated by offsetting the volumetric image data, such as voxels or vector elements, in the transmission direction for this selected partial volume. This creates a virtual projection image of the selected partial volume, which corresponds to an intraoral X-ray of a specific area of the mandibular arch.
- the offsetting of the volumetric image data in the transmission direction can take place, for example, by summation of the individual volumetric image data arranged one behind the other, such as voxels or vector elements, in the transmission direction.
- the calculation of the volumetric image data can also be done by integration after the application of a specific function to the voxels arranged in the transmission direction.
- a specific function may be applied to the volumetric image data to convert the volumetric image data to To weight beam direction so that certain significant for the evaluation areas, such as caries-infected areas are highlighted and other unimportant for the evaluation areas, such as a filling, less weighted.
- a function can for example be applied to the gray values of the individual elements of the volumetric image data.
- the 3D volume may consist of voxels that represent volume elements of the recorded object.
- Any 3D three-dimensional dental image can be used as 3D volume, such as a three-dimensional X-ray image, namely a DVT image or a CT image with voxels containing X-ray absorption values in the form of gray values, or an MRI image with voxels, the volumes - Represent elements of the recorded tissue.
- the SD volume can also be a three-dimensional ultrasound image.
- the volumetric image data can be summed in the transmission direction, the virtual transmission direction being parallel over the entire base surface or being formed in the form of a conical fan as an extension of virtual X-rays of a virtual X-ray source.
- the base can be designed arbitrarily, for example in the form of a circle, a rectangle or a fixed outline of the object to be recorded.
- the sub-volume may also have any other geometric basic shape, such as a tetrahedron, or the shape of a segmented sub-volume.
- An optimal projection image is taken with a base area in the form of a rectangle in a parallel passage. Beam direction generated so that the selected sub-volume has the shape of a cuboid.
- the projection image should correspond in size to the size of a conventional Intraoralaufhähme with dental films, namely with a width between 15 mm and 30 mm and a height between 25 mm and 40 mm.
- the projection images such as intraoral X-ray images of specific areas, can be generated from the already existing three-dimensional image data of the 3D volume.
- a further advantage is that the partial volume can be precisely determined by the user with computer assistance and, for example, intraoral X-ray recordings of individual teeth can be generated.
- the subvolume can be chosen such that a region of the 3D volume of interest, such as a fill, is virtually cut out to compute a projection image without the clipped region.
- a region of the 3D volume of interest such as a fill
- a secondary caries which lies under the filling, be diagnosed.
- This excision of special structures can be performed on fillings, dentin layers, enamel structures, etc., which can be virtually cut out after appropriate segmentation.
- the 3D volume with volumetric image data can be a three-dimensional X-ray image with X-ray absorption values.
- the virtual projection image corresponds to a two-dimensional x-ray image in a specific one
- the calculation of the volumetric image data by summation of the successively arranged volumetric image data, such as voxels or vector elements, take place along the transmission direction.
- each pixel of the projection image can be calculated by summing the voxels in the direction of transmission with respect to the gray values.
- the calculation of the volumetric image data by integration after the application of a specific function to the arranged in the direction of radiation elements of the volumetric image data can be done.
- This function can be designed so that certain areas are hidden or attenuated and areas that are important for the diagnosis are weighted more heavily.
- the determination of the partial volume can be done manually or computer-aided automatically.
- the partial volume may be determined manually by a user using input means.
- the definition of the partial volume can also be carried out automatically by computer and computer software for processing image data using conventional image processing methods, such as identification or segmentation of specific sub-objects, such as teeth or jawbones.
- the partial volume can be determined automatically based on a segmented sub-object, wherein the outer contour of the sub-volume is determined according to an outer contour of the segmented sub-object.
- a conventional pattern recognition method can be used for segmentation.
- a volume comprises only the part object that is to be diagnosed, so that the adjacent tissue, such as the gum and the jawbone, is disregarded and thereby the diagnosis is facilitated.
- the partial volume in its outer contour can be manually set so that it corresponds to the outer contour of a characteristic sub-object.
- the user can specify the outer contour of the sub-volume manually using input means according to the outer shape of the sub-object to be diagnosed, such as a tooth or a tooth group.
- the teeth and / or the mandibular arch can first be identified from the 3D volume. Subsequently, the position and the orientation of the teeth and / or the mandibular arch in the 3D volume is determined in order to determine the partial volume and the transmission direction for generating the virtual projection image.
- the identification of the teeth and jawbone from the 3D volume can be either computer-aided or manual by a user using input devices such as a mouse and keyboard, and using a display means such as a monitor.
- Automatic identification or segmentation uses conventional pattern recognition methods in which objects are segmented and searched for relationships between the objects.
- Pattern recognition may include the following steps, namely pre-processing processing, feature extraction, feature reduction, and classification of features. Preprocessing removes unwanted or irrelevant components of the image data.
- feature extraction certain features are extracted from the image data by comparison with known patterns of a database, such as a database of characteristic teeth.
- the automatic comparison is performed using transformation functions and scaling, whereby a comparison factor is calculated by calculating a variance between a pattern of the image data and an expected pattern from the database.
- the feature reduction checks which characteristics are relevant for class separation and which can be omitted.
- the patterns of teeth and mandibular arch obtained are relevant to this procedure, and the other features obtained may be disregarded.
- the main recognized features such as teeth and characteristic shapes of the mandibular arch, are subdivided into related classes, such as incisors, molars, tooth roots and jawbones.
- the partial volume in the form of a prism with an arbitrary base area and a certain thickness in the transmission direction can be determined.
- the sub-volume can be computer-assisted automatically determined by certain detected objects, such as teeth or groups of teeth, or manually entered by the user.
- a footprint is defined and then determines the thickness in the transmission direction.
- There- by a geometric prism is formed, wherein the transmission direction can be arranged perpendicular to the base.
- the partial volume can be determined so that certain objects, such as teeth or teeth groups or certain parts of the jawbone, are arranged in the partial volume.
- the partial volume can be limited only to the object to be recorded, so that other objects, such as a patient's cheek, which are arranged in front of or behind the object to be photographed in the transmission direction, are not contained in the partial volume and thus not as disturbing artifacts appear in the computed projection image.
- the virtual projection image can be stored in a user software for the management of dental X-ray images as an intraoral recording.
- a virtual projection recording in a transmission direction which is aligned perpendicular to the course of the mandibular arch lingual or palatal and whose sub-volume includes certain teeth, corresponds to a Intraoralaufnähme and can be stored as such in an existing user software.
- the calculated projection image like a conventional intraoral recording, can be used for diagnosis.
- the virtual projection image can be displayed by means of a display device as a virtual intraoral image.
- the virtual projection image can be viewed by means of a display device, such as a computer screen existing user software, such as a conventional intraoral recording.
- a plurality of projection images of different partial volumes with different transmission directions can be generated according to a predetermined scheme.
- sub-volumes can be designed arbitrarily. They may have different thicknesses with a selected base area or in their outer contour corresponding to a segmented partial object, such as a tooth or a
- Tooth group to be fixed.
- the projection images produced can also be displayed in a specific arrangement relative to one another by means of the display device.
- the series of virtual intraoral recordings may be made according to a conventional scheme as shown in US Pat. No. 5,179,579 in FIGS. 5A to 5S and disclosed in the pertinent portions of the specification.
- the individual virtual intraoral images of the series may comprise single or multiple teeth.
- a virtual intraoral acquisition of multiple teeth allows the diagnosis of areas between the teeth.
- Intraoral sensors is an exact Order of the virtual sub-volumes possible, so that in a series of images, the sub-volumes can be arranged without gaps to each other and thus improve the diagnostic options.
- each sub-volume may include image data having volumetric image data of a single tooth or group of teeth of the mandibular arch to produce separate projection images of the individual teeth or groups of teeth.
- the partial volume may include only portions of teeth, such as half a tooth.
- the partial volume can also include one tooth and two tooth spaces.
- a transmission direction in the palatal direction towards the palate or in the lingual direction toward the tongue can be determined for each subvolume, the individual subvolumes adjoining one another without gaps or partially overlapping, so that a series of projection images of the entire mandibular arch is produced.
- the transmission direction of the projection images produced corresponds to the usual orientation of intraoral recordings, so that the series produced, such as a series of conventional intraoral recordings, can be used for diagnosis.
- a transmission direction in the occlusal direction along a tooth axis can be defined for each subvolume, wherein the individual subvolumes adjoin one another without gaps or are partially overlapped. Lapping, so that a series of occlusal projection images of the entire mandibular arch is generated.
- an automatic arrangement of the virtual projection images generated from the 3D volume can take place as a complete detection of the teeth arranged in the oral cavity.
- the virtual projection image can correspond to an intraoral image generated with an intraoral recording device consisting of an X-ray emitter and an image receptor, such as an intraoral sensor.
- the projection image corresponds to a conventional intraoral acquisition of a section of the maxillary sinus.
- the virtual projection image can also be generated with the transmission direction along the mandibular arch for individual teeth.
- Such projection images can be advantageous for the diagnosis of certain findings in the space between the teeth at the approximal surfaces.
- the 3D volume can be recorded by means of digital volume tomography (DVT), by means of computed tomography (CT), by means of a three-dimensional ultrasound method or by means of magnetic resonance tomography (MRT).
- DVD digital volume tomography
- CT computed tomography
- MRT magnetic resonance tomography
- Intraoralaufnähme such as scattering, radiator properties, X-ray spectrum or the relative arrangement of the detector to the radiator, flow.
- these factors may be computer-aided simulated or retrieved from a database of factors for different arrangements, taking into account different physical conditions.
- certain system characteristics of a conventional intraoral image such as a detector efficiency, a detector characteristic or a plurality of detector characteristics and / or a detector sensitivity in different detectors, can be simulated, the type of detector such as one Memory film system, dental films of different sensitivity or a digital intraoral sensor, can be virtually selected.
- system characteristics of specific types of detectors can be simulated to mimic a conventional intraoral recording with this type of detector as closely as possible.
- the selection of the type of detector may be made virtually by the user using input means.
- Fig. 1 is a sketch of a 3D volume with selected
- FIG. 2 is a sketch of a generated projection shot from a partial volume
- FIG. 3 shows a sketch of an arrangement of several projection images of the entire oral cavity of a patient
- Fig. 4A is a sketch of a partial volume with parallel
- 4B is a sketch of an alternative partial volume in
- 4C is a sketch of an alternative partial volume with a trapezoidal base
- FIG. 5 shows a sketch of a scheme with several selected sub-volumes
- FIG. 6 is a sketch of a portion of the 3D volume that includes a single molar
- Fig. 7 is a sketch of an alternative section, which comprises a filling between two molars.
- FIG. 1 shows a sketch of a 3D volume 1 which was recorded by means of digital volume tomography, abbreviated DVT, or by means of computer tomography, abbreviated CT.
- the 3D volume 1 consists of voxels with specific X-ray absorption values.
- the 3D volume comprises several structures, such as the anterior incisors 2, the lateral molars 3 and the upper mandibular arch 4, the lower mandibular arch 5, the upper jawbone 6 and the lower jawbone 7.
- the 3D volume 1 is in user software shown on a computer screen, not shown.
- the 3D volume can be moved and rotated as required to change the viewing direction of the display.
- a virtual partial volume 8 having a specific base area 9 and a specific thickness 10 is determined in a transmission direction 11.
- the determination of the sub-volume can be automatically computer-aided or manually determined by a user.
- the individual teeth are recognized and classified by means of a conventional method for pattern recognition, wherein the partial volume is determined so that certain areas of the mandibular arch are covered by this partial volume.
- the user can first define the base area 9 by means of input means and then the
- the specified sub-volume 8 is particularly marked in the user software in Relation to 3D volume 1 shown.
- the second partial volume 12 with the base 13 and the thickness 14, the third partial volume 15 with the base 16 and the thickness 17 and the fourth partial volume 18 with the base 19 and the thickness 20 are set accordingly.
- the thickness 10, 14, 17, 20 is aligned in a direction of radiation perpendicular to the course 21 of the lower row of teeth in the palatal direction towards the palate or in the lingual direction towards the tongue is arranged.
- the individual sub-volumes 8, 12, 15 and 18 close to each other without gaps.
- a two-dimensional virtual projection image is generated using an algorithm from the selected partial volume by summation of the X-ray absorption values in the transmission direction, which corresponds to a conventional intraoral recording of the respective region of the dental arch within the partial volume.
- the shape of the sub-volumes 8, 12, 15 and 18 corresponds to a prism having a base area 9, 13, 16, 19 and the thickness 10, 14, 17 and 20.
- the generated projection image is recorded as a virtual intraoral recording in a database of conventional user software stored.
- FIG. 2 shows a sketch of a generated projection image 30 from the fourth partial volume 18 of the posterior molars of the lower mandibular arch 5.
- the virtual projection image 30 corresponds to a conventional intraoral image and is displayed in the user software by means of a computer screen and correspondingly in a da - filed for intended database.
- FIG. 3 shows a sketch of an arrangement 40 of several projection images of the entire oral cavity of the patient from the lower mandibular arch 5 and from the upper mandibular arch 6 from FIG. 1.
- the generated projection 30 from FIG. 2 can be seen.
- the remaining projection receivers 41 were correspondingly formed from the further partial volumes 8, 12, 15 shown in FIG. 1, as well as from others
- Partial volumes of the upper mandibular arch 6 generated which are not shown in Fig. 1.
- the partial volumes for generating the projection exposures 30, 41 from FIG. 3 are partially overlapping.
- the arrangement 40 of generated intraoral receptacles 30, 41 shown in FIG. 3 was produced according to a predetermined pattern, namely after the so-called "fill mouth series", in German "complete tooth status".
- the projection images 30, 41 can also be produced according to any other scheme.
- the generation of projection receptacles in the direction of the course 21 of the lower mandibular arch or of the upper mandibular arch 6 is likewise possible, so that the areas between the teeth are imaged on such a projection photograph.
- FIG. 4A shows a partial volume 18 which includes a molar 3 completely and two adjacent teeth in part, wherein the base 19 is formed in the shape of a circle and the thickness 20 is set so that the molars 3 are completely covered by the partial volume 18.
- a summation is made along the virtual transmission direction, which is represented by virtual parallel rays 50.
- FIG. 4B shows the partial volume 18, as in FIG. 4A, with the difference that the beams 50 in the form of a conical fan are arranged starting from a virtual X-ray source 51, wherein the fixed base 19 is a rectangle.
- FIG. 4C shows a further alternative embodiment of the partial volume 18 with a trapezoidal base 19, wherein the transmission direction is represented by parallel beams 50.
- FIG. 5 shows a diagram of a lower mandibular arch 5 from the top view with the selected sub-volumes 18, 15, 12, 8 of FIG. 1 and further sub-volumes 60, which are arranged in the transmission direction 11, perpendicular to the course 21 of Lower jaw arch 5 is aligned.
- the individual projection images are generated, the summation takes place along the parallel virtual rays as shown in FIG. 4A or FIG. 4C.
- the individual sub-volumes 18, 15, 12, 8 are selected to overlap, so that parts of the jawbone 5 are encompassed both by a subvolume and by its adjacent subvolume and thus in the projection images generated from these adjacent subvolumes the same part of the mandibular arch 5 can be seen.
- FIG. 6 shows a schematic of a section of the 3D volume 1, which has a single molar 3 of the lower
- Kieferbogens 5 includes.
- the molar 3 consists of a tooth root 70 and a tooth crown 71, which is provided with a filling 72.
- the tooth root 70 is arranged in the jaw bone 73.
- the gingiva 74 is located on the jaw bone 73.
- On the back 75 of the filling 72 a secondary caries 76 has arisen, which is to be diagnosed.
- a partial volume 77 is automatically determined by the user or computer-assisted, with the partial volume 77 comprising the dental crown 71 and the interfering partial object, namely the filling 72, being virtually cut out.
- the remaining sub-objects of interest to the diagnosis such as tooth root 70, gingiva 74, jawbone 73, also became omitted in the determination of the partial volume 77.
- the virtual transmission direction 11 of the volume 77 runs along a tooth axis 78 in the occlusal direction perpendicular to the occlusal surface 79.
- the fact that the filling 72 has been virtually cut out enables the secondary caries 76 to be better diagnosed on the basis of the projection image which is generated from the partial volume 77 in the transmission direction 11 .
- the precipitation of the filling can also be done by means of a specific function. Such a function is structured in such a way that the regions which are unimportant for an evaluation, such as a filling, are masked out or attenuated and areas which are significant for an evaluation, such as caries-affected areas, are displayed to a greater extent.
- FIG. 7 shows a schematic of a section of the 3D volume 1 as in FIG. 6, with the difference that the filling 72 is arranged between two molars 3 and that the irradiation direction 11 is aligned in the lingual direction perpendicular to the profile 21 of the mandibular arch 5 ,
- FIG. 7 shows a sectional plane 80 which divides the two molars 3 in the center.
- the partial volume 81 is formed by the cutting plane 80 and the outer contour 82 of the rear side of the molars 3.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201180042330.1A CN103069459B (zh) | 2010-09-01 | 2011-09-01 | 用于从3d体积中建立记录的方法 |
KR1020137008069A KR101839902B1 (ko) | 2010-09-01 | 2011-09-01 | 3d 체적에서 이미지의 생성 방법 |
JP2013526465A JP5859542B2 (ja) | 2010-09-01 | 2011-09-01 | 3次元容積から画像を生成するための方法 |
US13/820,442 US9652873B2 (en) | 2010-09-01 | 2011-09-01 | Method for creating an image from a 3D device |
EP11758426.8A EP2612300B1 (de) | 2010-09-01 | 2011-09-01 | Verfahren zur erstellung einer aufnahme aus einem 3d-volumen |
US15/589,979 US10521935B2 (en) | 2010-09-01 | 2017-05-08 | Method for creating an image from a 3D volume |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102010040096A DE102010040096A1 (de) | 2010-09-01 | 2010-09-01 | Verfahren zur Erstellung einer Aufnahme aus einem 3D-Volumen |
DE102010040096.3 | 2010-09-01 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US13/820,442 A-371-Of-International US9652873B2 (en) | 2010-09-01 | 2011-09-01 | Method for creating an image from a 3D device |
US15/589,979 Continuation US10521935B2 (en) | 2010-09-01 | 2017-05-08 | Method for creating an image from a 3D volume |
Publications (1)
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WO2012028670A1 true WO2012028670A1 (de) | 2012-03-08 |
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PCT/EP2011/065065 WO2012028670A1 (de) | 2010-09-01 | 2011-09-01 | Verfahren zur erstellung einer aufnahme aus einem 3d-volumen |
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Country | Link |
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US (2) | US9652873B2 (de) |
EP (1) | EP2612300B1 (de) |
JP (1) | JP5859542B2 (de) |
KR (1) | KR101839902B1 (de) |
CN (1) | CN103069459B (de) |
DE (1) | DE102010040096A1 (de) |
WO (1) | WO2012028670A1 (de) |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5179579A (en) | 1991-06-17 | 1993-01-12 | Board Of Regents, The University Of Texas System | Radiograph display system with anatomical icon for selecting digitized stored images |
US6190042B1 (en) | 1998-09-29 | 2001-02-20 | Electro Medical Systems | Dental x-ray aiming device for longitudinal radiographic analysis |
DE10108295A1 (de) | 2001-02-21 | 2002-09-05 | Sirona Dental Systems Gmbh | Zahnidentifikation auf digitalen Röntgenaufnahmen und Zuordnung von Informationen zu digitalen Röntgenaufnahmen |
DE102008008733A1 (de) | 2008-02-12 | 2009-08-13 | Sirona Dental Systems Gmbh | Verfahren zur Erstellung einer Schichtaufnahme |
DE102008021926A1 (de) * | 2008-05-02 | 2009-11-05 | Sicat Gmbh & Co. Kg | Erstellung und Präsentation von patientenindividuellen Panoramadarstellungen |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2834318B2 (ja) * | 1990-11-28 | 1998-12-09 | 株式会社日立製作所 | 三次元画像処理方法 |
JPH04263841A (ja) * | 1991-02-18 | 1992-09-18 | Hitachi Medical Corp | Ct像からの透視画像作成方法及び装置 |
US8496474B2 (en) * | 1997-06-20 | 2013-07-30 | Align Technology, Inc. | Computer automated development of an orthodontic treatment plan and appliance |
WO2002028285A1 (fr) * | 2000-10-04 | 2002-04-11 | Nihon University | Procede d'affichage d'images medicales par tomodensitometrie (tdm) a rayons x, dispositif d'affichage, dispositif medical par tdm a rayons x et programme d'enregistrement de support d'enregistrement mettant en oeuvre ce procede d'affichage |
US6829393B2 (en) * | 2001-09-20 | 2004-12-07 | Peter Allan Jansson | Method, program and apparatus for efficiently removing stray-flux effects by selected-ordinate image processing |
CN100350881C (zh) * | 2001-10-31 | 2007-11-28 | 画像诊断株式会社 | 医用图像处理装置、方法以及处理程序 |
DE10338145B4 (de) * | 2003-08-15 | 2022-02-24 | "Stiftung Caesar" (Center Of Advanced European Studies And Research) | Verfahren zur Darstellung von 3D Bilddaten |
CN101052995A (zh) * | 2004-08-20 | 2007-10-10 | 塞隆纳牙科系统有限责任公司 | 采用倾斜几何形状的三维重建 |
WO2006056912A1 (en) * | 2004-11-29 | 2006-06-01 | Koninklijke Philips Electronics N.V. | A method of geometrical distortion correction in 3d images |
US7176916B2 (en) * | 2005-04-15 | 2007-02-13 | T.I.E.S., Inc. | Object identifying system for segmenting unreconstructed data in image tomography |
WO2006116488A2 (en) * | 2005-04-25 | 2006-11-02 | Xoran Technologies, Inc. | Ct system with synthetic view generation |
JP4786685B2 (ja) * | 2007-11-16 | 2011-10-05 | 株式会社モリタ製作所 | X線画像表示方法、x線撮影装置、及びx線画像表示装置 |
US9424680B2 (en) * | 2010-04-16 | 2016-08-23 | Koninklijke Philips N.V. | Image data reformatting |
-
2010
- 2010-09-01 DE DE102010040096A patent/DE102010040096A1/de not_active Withdrawn
-
2011
- 2011-09-01 CN CN201180042330.1A patent/CN103069459B/zh active Active
- 2011-09-01 WO PCT/EP2011/065065 patent/WO2012028670A1/de active Application Filing
- 2011-09-01 EP EP11758426.8A patent/EP2612300B1/de active Active
- 2011-09-01 US US13/820,442 patent/US9652873B2/en active Active
- 2011-09-01 JP JP2013526465A patent/JP5859542B2/ja active Active
- 2011-09-01 KR KR1020137008069A patent/KR101839902B1/ko active IP Right Grant
-
2017
- 2017-05-08 US US15/589,979 patent/US10521935B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5179579A (en) | 1991-06-17 | 1993-01-12 | Board Of Regents, The University Of Texas System | Radiograph display system with anatomical icon for selecting digitized stored images |
US6190042B1 (en) | 1998-09-29 | 2001-02-20 | Electro Medical Systems | Dental x-ray aiming device for longitudinal radiographic analysis |
DE10108295A1 (de) | 2001-02-21 | 2002-09-05 | Sirona Dental Systems Gmbh | Zahnidentifikation auf digitalen Röntgenaufnahmen und Zuordnung von Informationen zu digitalen Röntgenaufnahmen |
DE102008008733A1 (de) | 2008-02-12 | 2009-08-13 | Sirona Dental Systems Gmbh | Verfahren zur Erstellung einer Schichtaufnahme |
DE102008021926A1 (de) * | 2008-05-02 | 2009-11-05 | Sicat Gmbh & Co. Kg | Erstellung und Präsentation von patientenindividuellen Panoramadarstellungen |
Non-Patent Citations (1)
Title |
---|
C. JACKOWSKI ET AL: "Ultra-high-resolution dual-source CT for forensic dental visualization-discrimination of ceramic and composite fillings", INTERNATIONAL JOURNAL OF LEGAL MEDICINE, vol. 122, no. 4, 1 July 2008 (2008-07-01), pages 301 - 307, XP055016112, ISSN: 0937-9827, DOI: 10.1007/s00414-008-0224-8 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102831606A (zh) * | 2012-08-01 | 2012-12-19 | 中国科学院自动化研究所 | 在医学影像中获取发音器官轮廓的方法 |
JP2015524724A (ja) * | 2012-08-14 | 2015-08-27 | シロナ・デンタル・システムズ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | 歯科対象物の個別の三次元光学画像を記録する方法 |
JP2020531190A (ja) * | 2017-08-31 | 2020-11-05 | 3シェイプ アー/エス | 表面誘導クロップを使用するボリュームレンダリング |
US11631211B2 (en) | 2017-08-31 | 2023-04-18 | 3Shape A/S | Volume rendering using surface guided cropping |
JP7268000B2 (ja) | 2017-08-31 | 2023-05-02 | 3シェイプ アー/エス | 表面誘導クロップを使用するボリュームレンダリング |
US11900526B2 (en) | 2017-08-31 | 2024-02-13 | 3Shape A/S | Volume rendering using surface guided cropping |
Also Published As
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US20130162645A1 (en) | 2013-06-27 |
KR20130138229A (ko) | 2013-12-18 |
EP2612300A1 (de) | 2013-07-10 |
EP2612300B1 (de) | 2015-02-25 |
CN103069459A (zh) | 2013-04-24 |
DE102010040096A1 (de) | 2012-03-01 |
CN103069459B (zh) | 2016-08-24 |
JP2013536715A (ja) | 2013-09-26 |
JP5859542B2 (ja) | 2016-02-10 |
KR101839902B1 (ko) | 2018-03-19 |
US9652873B2 (en) | 2017-05-16 |
US10521935B2 (en) | 2019-12-31 |
US20170243381A1 (en) | 2017-08-24 |
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