Anatomic assessment of the left main bifurcation and dynamic bifurcation angles using computed tomography angiography

Abstract

(Folia Morphol 2017; 76, 2: 197-207) Key words: coronary computed tomography angiography, left main coronary artery, anatomic dimensions and bifurcations angles

Detailed Morphometric Analysis on Left Coronary Artery in the Population of North-East India

“…Some cadaveric studies reported the mean length of LMCA to be 9.2±0.31 mm [ 4 ] and ranging from 5-20 mm [ 5 ]. Most CTA studies showed a relatively longer LMCA with a mean LMCA length of 9.9±4.15 mm [ 6 ], 10.0±4.5 mm [ 7 ], and 10.5±4 mm [ 8 ] (Figure 5 ).…”

“…There’s a direct correlation between the bifurcation angle and the formation of plaques leading to atherosclerosis [ 20 ]. Studies combining normal as well as diseased subjects found LAD - LCX bifurcation angle to be 85°±23° [ 7 ] and 89.1°±13.1° [ 20 ]. While the same study observed LAD - LCX bifurcation angle in normal and diseased subjects to be 75.5°±19.8° and 94°±19.7°, respectively (range: 55.3° - 134.5°) [ 20 ].…”

“…Some cadaveric studies reported the mean length of LMCA to be 9.2±0.31 mm [4] and ranging from 5-20 mm [5]. Most CTA studies showed a relatively longer LMCA with a mean LMCA length of 9.9±4.15 mm [6], 10.0±4.5 mm [7], and 10.5±4 mm [8] (Figure 5). The difference in the mean length of the main trunk of LCA could be due to the difference in methodology and study population.…”

Clinical Significance of Coronary Arterial Dominance: A Review of the Literature

“…In fluid dynamics, shear force on a thin wall may be influenced by total flow, angle of offtake, and rate of diameter change. 38 , 39 , 40 In left‐dominant systems, >90% of the coronary blood flow enters the left coronary artery, which can cause high shear stress at the bifurcation of the left main artery. 41 , 42 The PDA, a significant anatomic variation defining coronary dominance, exhibits a greater angle of takeoff in left‐dominant hearts compared with right‐dominant systems.…”

Comparative characteristic of the common lumen of anterior interventricular branch of the left coronary artery in norm and myocardial infarction

“…Поэтому исследование конструкции субэпикардиального артериального русла сердца людей, особенно трудоспособного возраста, представляет практический интерес. В многочисленных литературных источниках рассматриваются отдельные морфометрические показатели коронарных сосудов [2,3], проводятся описания общего просвета венечных артерий в норме [4,5], характеризуются топографо-анатомические сравнения артериального и венозного русел органа [6]. Однако в литературе критически мало информации о количественных значениях морфофункциональных параметров коронарного русла при различных вариантах ветвлений венечных артерий [7], достаточно редко встречаются публикации об особенностях его конструкции в норме и при патологии [8,9].…”