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Volume and dimensions of angiographically normal coronary arteries assessed by multidetector computed tomography.

Abstract：

BACKGROUND:The objective of this study was to determine normal values for coronary artery volume (CAV) and individual vasculature and segment dimensions. METHODS:We examined 200 healthy volunteers with an Agatston score of 0 and a normal, high quality coronary CTA. Using 320 slice multidetector row CT and designated vessel tracing software with border detection algorithm, the main coronary arteries and branches were delineated and total and segmental dimensions calculated. RESULTS:2931 segments (98.9%) could be adequately delineated. Of the 173 subjects with adequate coronary delineations, 140 subjects (81%) received nitroglycerin (NTG) prior to the scan. CAV was 4.33 ml (95% CI: 2.27-6.39) in subjects with NTG and 2.55 ml (95% CI: 0.34-4.76) in subjects without NTG (p < 0.0001). Left ventricular mass (LVM) was strongly correlated with CAV (p < 0.0001) independently of body surface area and gender, whereas gender was not independently correlated with CAV. From right, balanced to left coronary dominance, the left anterior descending artery vasculature mean contribution to CAV increased slightly (37%, 40% and 43%, p = 0.002), and the mean contributions of right coronary artery (RCA) and left circumflex artery (LCX) vasculature was inversely related - from right, balanced to left 46%, 32% and 16% for RCA (p < 0.0001); and 16%, 27% and 38% for LCX (p < 0.0001). CONCLUSION:Normal values for coronary artery volume as assessed by coronary CTA are reported. They strongly correlate with NTG administration and left ventricular mass. The respective contribution of the left and right coronary vascularture is influenced by coronary dominance.

journal_name

J Cardiovasc Comput Tomogr

journal_title

Journal of cardiovascular computed tomography

authors

Sørensen SK,Kühl JT,Fuchs A,Norsk JB,Køber LV,Nordestgaard BG,Kofoed KF

doi

10.1016/j.jcct.2017.04.001

subject

Has Abstract

pub_date

2017-01-01 00:00:00

pages

295-301

issue

4

eissn

1934-5925

issn

1876-861X

pii

S1934-5925(17)30086-2

journal_volume

11

pub_type

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