IMAGE PROCESSING SYSTEM AND METHOD FOR ALIGNMENT OF IMAGES

摘要

A medical imaging system in which a current (X-ray) image ( 8 ) of a body volume is selected for association with one of several stored images ( 1 Oa 5 IOb), the ECG and the respiratory cycle being determined each time together with the images. First and second static images (R 1 ,R 2 ) of the body volume in first and second extreme respiratory states are provided, and first and second respective similarity values (r 1 ,r 2 ) are determined for each current and previous image so as to calculate the respiratory phase of the body volume therein. Using this data, one of the previous images ( 10 a) is chosen which is closest to the current image ( 8 ) in respect of cardiac rhythm and cycle.