Abstract
An: 2020, Nr.2, Articol Nr. 2
Title: 

MORPHOLOGICAL CHARACTERISTICS OF MYOCARDIAL BRIDGES DIAGNOSED BY CT CORONAROGRAPHY, EXCEPTING THE ANTERIOR INTERVENTRICULAR ARTERY

Authors: 

      R. Niţu, P. Bordei, C. Ionescu, S. Ispas - Ovidius University, Constanta, Faculty of Medicine, Department of Anatomy
      MORPHOLOGICAL CHARACTERISTICS OF MYOCARDIAL BRIDGES DIAGNOSED BY CT CORONAROGRAPHY, EXCEPTING THE ANTERIOR INTERVENTRICULAR ARTERY (Abstract): Our results were obtained by studying coronary angiography performed on a computed tomography GE LightSpeed VCT64 Slice CT. Myocardial bridges at the circumflex artery were found located in 17 cases, being located at the trunk of the circumflex artery (all cases being male), in 10 cases myocardial bridges being located at the left marginal artery (originating in the circumflex artery). Myocardial bridges were unique in 16 cases, in only one case (in males), with double myocardial bridges in the trunk of the circumflex artery. The thickness of the myocardial bridges at the circumflex artery was studied on 9 myocardial bridges, finding it between 2.4-3.3 mm, at the male being between 2.5-3.3 mm, and at the female between 2.4- 3.0 mm. The thickness of the myocardial bridges at the level of the left marginal artery, followed on 28 myocardial bridges, we found it between 2.6-3.7 mm, in the male being between 3.3-3.7 mm, and in the female, between 2.6-3.7 mm. Myocardial bridges were located at the level of the right coronary artery in 17 cases, 10 cases being in males and 7 cases in females. Myocardial bridges had the following disposition: In only one case (female), myocardial bridges were located on the anterior right ventricular artery originating in the right coronary artery, and in 16 cases, myocardial bridges were located in the trunk of the right coronary artery, in 10 cases being in male, at the level of the posterior coronary groove, and in 6 cases being in female, 2 cases at the level of the posterior coronary groove and in 4 cases at the level of the posterior interventricular groove. Only in one case, in males, myocardial bridges coexist with myocardial bridges located on the trunk of the circumflex artery and on the left marginal artery, in the rest of the cases myocardial bridges were unique, being the only myocardial bridges in the coronary arteries. The length of the myocardial bridges at the level of the right coronary artery was found to be between 21.0-73.10 mm, being smaller at the level of the arterial trunk in the coronary groove (21.0-24.0 mm) and more voluminous in the posterior interventricular groove (over 24.0 mm), at the level of the posterior interventricular artery meeting the highest length value of the myocardial bridge (73.10 mm). The thickness of the myocardial bridge was analyzed on 53 myocardial bridges (18.93% of the total myocardial bridges), and we found it between 2.1-4.1 mm, in males being between 2.6-4.1 mm, and in females between 2.1-4.1 mm. The diameter of the tunneling artery at the level of the circumflex artery, in systole, was followed on 16 cases and we found it between 1.2-1.7 mm, in males, being between 1.2-1.5 mm, and in sex female between 1.5-1.7 mm. The diameter of the tunneling artery at the level of the right coronary artery, in systole, was also followed on 16 cases (11.43% of the total cases), and we found it between 1.3-2.2 mm, in males, being between 1.2-1.5 mm, and in females between 1.5-2.2 mm.
Key words: MYOCARDIAL BRIDGES, MORPHOLOGY
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