TY - JOUR
AU1 - Sandor, T.
AU2 - Paulin, S.
AU3 - Sridhar, B.
AB - Obstructive lesions in the coronary arterial tree may impair capillary or myocardial contrast accumulation, commonly known as myocardial blush. Densitometric assessment of the blush in cine-fluorography presupposes that the part of the cine-frame that represents the myocardium (or well defined part of it) can be retrieved on sequential frames. In the present operator-interactive approach, the blush is determined by digital subtraction. The procedure is the following: (1) A mask is selected by the operator before injection of the contrast medium at a selected instant within the heart cycle. (2) On one frame from the post-injection film series taken at the same phase of the heart cycle as the mask the operator may identify as many as 3 analyzing windows (polygons) which cover various areas on the myocardium. The computer then finds the same areas represented by the windows on each frame, computes the integral of the optical density distribution over them, and subtracts these values from the respective integrals on the mask. A plot of the subtracted data as a function of time gives the myocardial contrast turnover at selected sites.
TI - Densitometric Evaluation Of Myocardial Contrast Accumulation
JF - Proceedings of SPIE
DO - 10.1117/12.955963
DA - 1977-12-27
UR - https://www.deepdyve.com/lp/spie/densitometric-evaluation-of-myocardial-contrast-accumulation-D3GGj68Lr2
SP - 349
EP - 352
VL - 127
IS - 
DP - DeepDyve
ER -