Comparison of clinical value of coronary CT and coronary angiography in diagnosis of myocardial bridge(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2021年第4期
- Page:
- 441-445
- Research Field:
- 医学影像物理
- Publishing date:
Info
- Title:
- Comparison of clinical value of coronary CT and coronary angiography in diagnosis of myocardial bridge
- Author(s):
- ZHANG You1; LI Jing2; LI Hui1; CHEN Yuqi1; HUI Jie1
- 1. Department of Cardiology, the Second Affiliated Hospital of Soochow University, Suzhou 215000, China 2. Department of Critical Care Medicine, the First Affiliated Hospital of Soochow University, Suzhou 215000, China
- Keywords:
- Keywords: myocardial bridge coronary heart disease coronary CT coronary angiography
- PACS:
- R445；R816.2
- DOI:
- DOI:10.3969/j.issn.1005-202X.2021.04.009
- Abstract:
- Abstract: Objective To compare the clinical value of coronary CT and coronary angiography in diagnosing myocardial bridge. Methods The clinical data of 107 patients with suspected coronary heart disease in Department of Cardiology Medicine, the Second Affiliated Hospital of Soochow University were collected. All patients received coronary CT and coronary angiography. The stenosis degree of mural coronary artery (MCA) was calculated the distributions and courses of anterior descending artery, diagonal branch, obtuse marginal branch, posterior descending artery, circumflex artery were observed, and their relationships with myocardium were analyzed and the length and depth of myocardial bridge were measured. The image quality, detection rate for myocardial bridge and measurement indexes of myocardial bridge were compared between two examination methods, and the consistency of two methods in the diagnosis of MCA stenosis degree and myocardial bridge was analyzed. Taking coronary angiography as gold standard, the sensitivity, specificity, accuracy, positive predictive value and negative predictive value were calculated for evaluating the clinical value of coronary CT in the diagnosis of moderate-to-severe MCA stenosis and myocardial bridge. Results The excellent and good rates of the quality of images obtained by two examination methods were satisfactory, but the detection rate of coronary CT for myocardial bridge was higher than that of coronary angiography (25.23% vs 14.02%, P<0.05). The length of myocardial bridge measured by coronary CT was longer than that measured by coronary angiography, and MCA stenosis degree was lower than that measured by coronary angiography, with statistical significance (P<0.05). Coronary CT and coronary angiography showed a good consistency in the diagnosis of MCA stenosis degree (Kappa=0.832, P<0.05). Compared with coronary angiography, the sensitivity, specificity, accuracy, positive predictive value and negative predictive value of coronary CT in diagnosing moderate-to-severe MCA stenosis were 90.63%, 86.67%, 74.36%, 95.59% and 87.85%, respectively. Coronary CT and coronary angiography showed a good consistency in the diagnosis of myocardial bridge (Kappa=0.815, P<0.05). Compared with coronary angiography, the sensitivity, specificity, accuracy, positive predictive value and negative predictive value of coronary CT in diagnosing myocardial bridge were 64.29%, 73.33%, 69.23%, 68.75% and 68.97%, respectively. Conclusion Both coronary CT and coronary angiography have certain value in the diagnosis of myocardial bridge. However, coronary CT has more advantages in clinical application, such as non-invasion, high image quality, clear display of the location and distribution of myocardial bridge, higher sensitivity and specificity for MCA stenosis.
Last Update: 2021-04-29