Methods and apparatus for non-uniform rotation distortion detection for enhanced intravascular ultrasound imaging. The present invention provides methods and apparatus which detect non-uniform rotation in an improved manner without using beacons which may create shadowing of tissue behind the beacons...http://www.google.com.au/patents/US6267727?utm_source=gb-gplus-sharePatent US6267727 - Methods and apparatus for non-uniform rotation distortion detection in an intravascular ultrasound imaging system
