Patent ID: 8971493
Filing Date: 2015-03-03
Classification: A61B,Y10S

Abstract:
1. A medical imaging system for adaptively acquiring anatomical images, comprising: a programmable image radiation filter and a shape adaptive collimator including a plurality of different portions of X-ray absorbent material automatically adjustable to alter the dimensions of a spatial cross section of an X-ray beam of radiation into a non-rectangular shape, in response to a first control signal indicating shape of a region of interest of patient anatomy, wherein the programmable image radiation filter and the shape adaptive collimator are configured to provide a non-uniform image radiation exposure by adjusting X-ray beam shape, focus and intensity; the shape adaptive collimator adaptively configured to simultaneously provide a high radiation dose to a first area within the region of interest and a low radiation dose to a second area within the region of interest; a synchronization processor for providing a heart rate related synchronization signal derived from a patient cardiac function related parameter, said synchronization signal enabling adaptive variation in timing of image acquisition within an individual heart cycle and between successive heart cycles of each individual image frame of a plurality of sequential image frames; an X-ray image acquisition device using said shape adaptive collimator for acquiring anatomical images of said region of interest with reduced patient X-ray exposure in response to said synchronization signal; and a display processor for presenting images, acquired by said acquisition device to a user on a reproduction device.