Digital densitometric determination of relative coronary flow distributions

Albert F. Lubbers; Cornelis H. Slump; Corstiaan J. Storm

doi:10.1117/12.148639

29 July 1993 Digital densitometric determination of relative coronary flow distributions

Albert F. Lubbers, Cornelis H. Slump, Corstiaan J. Storm

Author Affiliations +

Proceedings Volume 1905, Biomedical Image Processing and Biomedical Visualization; (1993) https://doi.org/10.1117/12.148639
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1993, San Jose, CA, United States

Abstract

In cardiology coronary stenoses are in most case diagnosed by subjective visual interpretation of coronary artery structures in which contingent stenoses are assessed in terms of percentage luminal area reduction. This results in large intra- and interobserver variability in readings. Besides, also the correlation between the anatomical severity of coronary stenoses and their physiological significance is rather poor. A far better indication for the functional severity of coronary stenoses is coronary flow reserve (CFR). Although good results with densitometric CFR methods have been reported, in clinical practice the current techniques are time consuming and difficult in procedure. This paper presents a less demanding approach to determine densitometrically the relative flow distribution between the two main branches of the left coronary artery. The hypotheses is that comparison of the flow distributions under basal and hyperemic conditions of the heart muscle will provide useful clinical information concerning the physiological relevance of coronary stenoses. The hypotheses is tested by means of in vitro flow experiments with a glass flow phantom representing the proximal part of the left coronary artery. From properly positioned regions of interest (ROIs) within a sequence of temporal digital images time-density curves has been extracted. It is investigated whether the center of gravity of the density curves is a useful parameter to calculate relative flow rate differences. The flow study results together with a discussion will be presented in this paper.

Citation Download Citation

Albert F. Lubbers, Cornelis H. Slump, and Corstiaan J. Storm "Digital densitometric determination of relative coronary flow distributions", Proc. SPIE 1905, Biomedical Image Processing and Biomedical Visualization, (29 July 1993); https://doi.org/10.1117/12.148639

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE