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Diagnostic value of myocardial bridge-mural coronary artery vascular morphology based on CTA technique
Junfen Yan1, Fuzhen Guo2, Xiubin Xue3
1Department of Gastroenterology, Hebei Huaao Hospital Zhangjiakou 075000, Hebei, China.
Insights
Coronary CT angiography (CTA) accurately assesses myocardial bridge-mural coronary artery (MB-MCA) morphology, showing good agreement with coronary angiography. CTA is a valuable tool for diagnosing MB-MCA, offering high sensitivity and specificity.
Area of Science:
- Cardiovascular Imaging
- Diagnostic Radiology
- Medical Technology
Background:
- Myocardial bridge-mural coronary artery (MB-MCA) is a congenital anomaly affecting coronary artery function.
- Accurate diagnosis of MB-MCA is crucial for patient management and treatment planning.
Purpose of the Study:
- To evaluate the diagnostic performance of coronary CT angiography (CTA) in assessing the vascular morphology of MB-MCA.
- To compare CTA findings with the gold standard coronary angiography (CAG).
Main Methods:
- Retrospective analysis of 180 patients with suspected MB-MCA.
- Comparison of image quality, myocardial bridge characteristics (distribution, type, length), and degree of stenosis between CTA and CAG.
- Receiver operating characteristic (ROC) curve analysis to determine diagnostic efficiency (Area Under the Curve - AUC).
Main Results:
- CTA demonstrated excellent image quality comparable to CAG.
- CTA measurements showed greater myocardial bridge length and lower degree of stenosis compared to CAG (p < 0.05).
- High agreement (Kappa values 0.831-0.895) and diagnostic efficiency (AUC 92.41%, sensitivity 98.73%, specificity 92.47%) for CTA in MB-MCA assessment.
Conclusions:
- CTA is highly accurate for assessing myocardial bridge distribution and length.
- CTA demonstrates high accuracy and good agreement with CAG for MB-MCA diagnosis.
- CTA is a valuable non-invasive tool for the diagnosis and assessment of MB-MCA.
Objective:
To investigate the diagnostic value of coronary CT angiography (CTA) technique on the vascular morphology of the myocardial bridge-mural coronary artery (MB-MCA).
Methods:
In this retrospective study, 180 patients with suspected MB-MCA attending Hebei Huaao Hospital from February 2019 to February 2020 were analyzed. The image quality, myocardial bridge distribution, type, length, and degree of stenosis of wall coronary vessels were compared between CTA and Coronary angiography (CAG). The area under the curve (AUC) was used to analyze the diagnostic efficiency of CTA.
Results:
There was no difference in the excellent CTA image quality rate between the two methods (P > 0.05). The mean length of myocardial bridges measured by CTA was greater than that measured by CAG (P < 0.05), while the mean degree of stenosis measured by CTA was lower than that measured by CAG (P < 0.05). The Kappa value of CTA for determining MB-MCA stenosis versus CAG results was 0.831 (P < 0.05); The Kappa value of CTA for determining MB-MCA versus CAG results was 0.895 (P < 0.05). The receiver operating characteristic (ROC) curve analysis showed that the AUC was 92.41, sensitivity was 98.73%, and specificity was 92.47% (P < 0.05).
Conclusions:
CTA showed good distribution and length of myocardial bridges, high accuracy for MB-MCA assessment and diagnosis, and good agreement with the gold standard CAG diagnosis.
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