CA2135934A1 - Magnetic resonance imaging using pattern recognition - Google Patents

Magnetic resonance imaging using pattern recognition

Info

Publication number
CA2135934A1
CA2135934A1 CA002135934A CA2135934A CA2135934A1 CA 2135934 A1 CA2135934 A1 CA 2135934A1 CA 002135934 A CA002135934 A CA 002135934A CA 2135934 A CA2135934 A CA 2135934A CA 2135934 A1 CA2135934 A1 CA 2135934A1
Authority
CA
Canada
Prior art keywords
training
samples
test
similarity
produce
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002135934A
Other languages
French (fr)
Other versions
CA2135934C (en
Inventor
Justin P. Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Washington
Original Assignee
Justin P. Smith
University Of Washington
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Justin P. Smith, University Of Washington filed Critical Justin P. Smith
Publication of CA2135934A1 publication Critical patent/CA2135934A1/en
Application granted granted Critical
Publication of CA2135934C publication Critical patent/CA2135934C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/58—Calibration of imaging systems, e.g. using test probes, Phantoms; Calibration objects or fiducial markers such as active or passive RF coils surrounding an MR active material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution

Abstract

An MRI technique in which the similarity of samples from different portions of a body is determined and displayed.
In one embodiment, the method can be used to track the spread of a known primary tumor to other portions of a patient's body.
The MRI apparatus is used to produce a training set comprising one or more training samples. The training set is formed from a plurality of congruent first images of a training region of the body. Each first image is produced using an MRI pulse se-quence different from the pulse sequences used to produce the other first images. Each first image comprises an array of pixels;
and each training sample comprises a spatially aligned set of pixels from each first image. The same technique is used to pro-duce a plurality of test samples corresponding to a test region of the same body. The test samples are produced using the same pulse sequences as the training samples. The training and test samples are then compared, to produce similarity data indicat-ing, for each test sample, the degree of similarity between the test sample and the training samples. A display is then generated based upon the similarity data.
CA002135934A 1992-05-15 1993-05-13 Magnetic resonance imaging using pattern recognition Expired - Fee Related CA2135934C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/883,565 US5311131A (en) 1992-05-15 1992-05-15 Magnetic resonance imaging using pattern recognition
US883,565 1992-05-15
PCT/US1993/004572 WO1993023762A1 (en) 1992-05-15 1993-05-13 Magnetic resonance imaging using pattern recognition

Publications (2)

Publication Number Publication Date
CA2135934A1 true CA2135934A1 (en) 1993-11-25
CA2135934C CA2135934C (en) 2001-07-31

Family

ID=25382853

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002135934A Expired - Fee Related CA2135934C (en) 1992-05-15 1993-05-13 Magnetic resonance imaging using pattern recognition

Country Status (9)

Country Link
US (4) US5311131A (en)
EP (2) EP0919826A3 (en)
JP (1) JPH08502178A (en)
AT (1) ATE186989T1 (en)
AU (1) AU4248893A (en)
CA (1) CA2135934C (en)
DE (1) DE69327099T2 (en)
ES (1) ES2139006T3 (en)
WO (1) WO1993023762A1 (en)

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Also Published As

Publication number Publication date
CA2135934C (en) 2001-07-31
JPH08502178A (en) 1996-03-12
WO1993023762A9 (en) 1999-05-14
EP0919826A3 (en) 1999-10-20
WO1993023762A1 (en) 1993-11-25
US6396270B1 (en) 2002-05-28
US5644232A (en) 1997-07-01
EP0640220B1 (en) 1999-11-24
ES2139006T3 (en) 2000-02-01
DE69327099D1 (en) 1999-12-30
ATE186989T1 (en) 1999-12-15
US5818231A (en) 1998-10-06
EP0919826A2 (en) 1999-06-02
AU4248893A (en) 1993-12-13
US5311131A (en) 1994-05-10
DE69327099T2 (en) 2000-03-16
EP0640220A1 (en) 1995-03-01

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