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Updated: Jun 3, 2026

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
08:13

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography

Published on: February 16, 2016

[CT imaging characteristics of incomplete and complete myocardial bridges-mural coronary artery]

Jin Gu1, He-shui Shi, Ping Han

  • 1Department of Radiology, Huazhong Science and Technology University, Wuhan 430022, China.

Zhonghua Xin Xue Guan Bing Za Zhi
|March 23, 2011
PubMed

Insights

Dual-source coronary CT angiography (DSCTA) effectively visualizes myocardial bridges (MB) and mural coronary arteries (MB-MCA). This imaging technique accurately assesses dynamic changes and associated atherosclerosis in both incomplete and complete MB-MCA.

Area of Science:

  • Cardiovascular Imaging
  • Radiology
  • Anatomy

Background:

  • Myocardial bridges (MB) are congenital anomalies where a segment of a coronary artery runs intramurally.
  • Differentiating between incomplete and complete MB-MCA is crucial for understanding their clinical significance.
  • CT angiography offers detailed visualization of coronary artery anatomy and pathology.

Purpose of the Study:

  • To evaluate the CT imaging characteristics of incomplete versus complete myocardial bridges-mural coronary artery (MB-MCA).
  • To assess the dynamic changes in MB-MCA diameter during systole and diastole using DSCTA.
  • To investigate the prevalence of atherosclerotic changes proximal to MB-MCA.

Main Methods:

  • Fifty subjects with MB identified via dual-source coronary CT angiography (DSCTA) were included.
  • Subjects were categorized into incomplete and complete MB-MCA groups.
  • MCA diameter, stenosis rate, and proximal atheromatous changes were evaluated in systole and diastole phases.

Main Results:

  • Of 58 MBs, 23 were incomplete and 35 were complete.
  • Significant differences were observed in diameter changes between diastole and systole phases (P=0.008) and stenosis rates (P=0.01) between incomplete and complete MB-MCA.
  • Atherosclerotic findings were present in 34.78% of incomplete MB-MCA and 42.86% of complete MB-MCA (P>0.05).

Conclusions:

  • DSCTA provides vivid visualization of incomplete and complete myocardial bridges.
  • The technique accurately evaluates dynamic shape changes of MB-MCA throughout the cardiac cycle.
  • DSCTA is effective in detecting atherosclerotic changes in the proximal segments of MB-MCA.
Abstract

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