Keywords:
Congenital, Statistics, Contrast agent-intravenous, Computer Applications-3D, CT-Angiography, CT, CAD, Cardiovascular system, Cardiac, Anatomy
Authors:
E. Detorakis1, I. Papadopoulou2, R. Illing3; 1Iraklion/GR, 2Heraklion/GR, 3Budapest/HU
Results
Myocardial bridging was detected in 52 of 98 patients (53%). In all cases the intramuscular segment was of the superficial type and involved the mid part of the LAD artery. No MB was recorded in LAD branches of other coronary arteries. The length of MB was calculated between 1 and 4 cm (mean length 2.2 cm) (Figure 1 and 2). In 48 out of 52 patients the lumen diameter seemed reduced, while in those patients where retrospective ECG-gated protocol was used, a further reduction of lumen diameter was recorded during systole (between 10 and 30% of the initial diameter). Forty-two patients belonged to CAD-RADS 0 category and the remaining 10 to CAD-RADS 1. Thirty-eight out of 42 CAD-RADs 0 patients presented chest pain/discomfort episodes under exercise or/and stress conditions the last 3 to 8 months while other causes of chest pain had been previously excluded from their referring physicians. In all the above 38 patients, a reduced LAD lumen diameter was found along the MB segment. A statistically significant correlation was found between the presence of myocardial bridging and chest pain (r2= 0.3218, p = 0.0032).