Patent ID: 8983158
Filing Date: 2015-03-17
Classification: A61B,G06T

Abstract:
1. An image data subtraction system to enhance visualization of vessels subject to movement, comprising: an interface for receiving an electrical signal representing a heart cycle electrical waveform occurring over a plurality of heart cycles; an imaging system for, acquiring data representing a first image set comprising a plurality of temporally sequential individual mask images of vessels of a portion of patient anatomy during said plurality of heart cycles in the absence of a contrast agent, and acquiring data representing a second image set comprising a plurality of temporally sequential individual contrast enhanced images of vessels of said portion of patient anatomy during said plurality of heart cycles in the presence of a contrast agent, wherein each individual mask image of the first image set is acquired at one of multiple segments within the heart cycle and each contrast enhanced image of the second image set is acquired at one of the same segments within the heart cycle; and an image data processor for automatically, using said electrical signal to identify corresponding pairs of images, wherein each of the corresponding pairs comprises a mask image and a contrast enhanced image acquired at a same segment within the heart cycle, and for each of said corresponding pairs, subtracting data representing a mask image of a corresponding pair from a contrast enhanced image of said corresponding pair, to provide a plurality of subtracted images providing enhanced visualization of vessels.