Evaluation of Myocardial Bridge With Multidetector Computed Tomography

Kim, So Yeon; Lee, Young Soo; Lee, Jin Bae; Ryu, Jae Kean; Choi, Ji Yong; Chang, Sung Gug; Kim, Kee‐Sik

doi:10.1253/circj.cj-09-0407

Cited by 22 publications

(14 citation statements)

References 21 publications

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“…The frequency of superficial type was 66.3% in our study, which was similar to that in other populations (71.1% in a Korean population). 16 In patients with significant stenosis in coronary arteries, ICA could induce angina by promoting atherosclerosis in the segment proximal to ICA. However, the majority of such patients exhibit no considerable atherosclerosis in the LAD; their symptoms could be caused by the hemodynamic alterations brought about by MB contraction.…”

Section: Discussionmentioning

confidence: 99%

Intramural Coronary Arterial Course Is Associated With Coronary Arterial Stenosis and Prognosis of Major Cardiac Events

Wang

Chen

et al. 2013

ATVB

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Objective-The clinical significance of an intramural course (or bridging) of the coronary artery remains controversial. We investigated the relationship between intramural coronary arteries (ICAs) and coronary stenosis and prognosis of subjects with ICA. Methods and Results-ICA and coronary stenosis were assessed by multidetector computed tomography coronary angiography. ICAs in the left anterior descending artery were studied, which were further classified as superficial (≤2 mm) or deep type (>2 mm). Coronary stenosis was classified as nonstenosis, insignificant stenosis (<50%), and significant stenosis (≥50% Key Words: coronary artery stenosis ◼ intramural coronary artery ◼ major cardiac event ◼ multidetector computed tomography ◼ myocardial bridging

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Section: Discussionmentioning

confidence: 99%

Intramural Coronary Arterial Course Is Associated With Coronary Arterial Stenosis and Prognosis of Major Cardiac Events

Wang

Chen

et al. 2013

ATVB

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“…Therefore, 128-slice SCTCA may provide extensive imaging information for the preoperative evaluation of surgical muscle bridge lysis and thereby guide surgery. Furthermore, 128-slice SCTCA may provide a basis for the preoperative judgement of MB position, thickness, length and compression extent in interventional treatment and the accurate and effective selections of stent type and length, which increases the treatment success rate (17–20). However, this study also shows certain shortcomings (the diagnosis results are not comparable with those of the pathological gold standard and the technique is unable to calculate to high sensitivity and specificity) due to the spatio-temporal resolution limitations of MSCT and the influence of motion artifacts on compression extent accuracy.…”

Section: Discussionmentioning

confidence: 99%

Clinical value of the correlations of mural coronary artery compression extent with myocardial bridge length and thickness evaluated by 128-slice CT

Yu-jun

Zhang

A-dan

2012

Experimental and Therapeutic Medicine

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This study aimed to investigate the correlations between the detection rate of mural coronary artery (MCA) by 128-slice CT and the MCA compression extent in systole with myocardial bridge (MB) length and thickness. A retrospective analysis was conducted for 580 patients receiving multislicespiral CT coronary angiography (MSCTCA). In addition, the MCA incidence rate and position were detected, and the MB length and thickness in the left anterior descending branch (LAD) and MCA compression extent in systole were measured to compare the differences between MB-MCA length and thickness among the mild, moderate and severe groups. A total of 140 cases of MB-MCA (24.14%) were involved in the study. Among them, 104 cases occurred in the middle segment of the LAD (74.3%), 16 cases (11.4%) occurred in the distal segment of the LAD, 8 cases (5.7%) occurred in the left circumflex-obtuse marginal branch (LCX-OM), 7 cases (5.0%) occurred in the first diagonal branch (1st D), 3 cases (2.1%) in the intermediate branch (M) and 2 cases (1.5%) occurred in the posterior descending branch of the right coronary artery (RCA-PD). The mean length of the MB in the LAD was 21.80±5.98 mm, the mean thickness was 2.15±0.74 mm and the mean compression extent was 38.5±19.6%. Among the different groups, there were no significant difference in MB length (P>0.05) but there were significant differences in MB thickness (P<0.05). In addition, the extent of MCA compression in systole was linearly and positively correlated with MB thickness (r=0.408, P<0.05) but was not correlated with MB length (r=0.076, P>0.05). 128-slice CT coronary angiography (SCTCA) is able to accurately detect MB-MCA and evaluate the correlations of MCA compression extent in systole with MB length and thickness which provides a basis for its clinical use.

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“…In recent years, the advance of multi-detector computed tomography (MDCT) technique has enabled us to easily and Anatomical Characteristics of MB in MI by MDCT noninvasively detect the presence and anatomical localization of coronary arteries, leading to recent studies on MB detection using MDCT. [21][22][23][24][25] In these reports, the frequency of MB detected by MDCT is distinctly higher than those by coronary angiography. 23,[26][27][28] In the present study, we analyzed the anatomical characteristics of MB in the LAD, such as the length, thickness, and location of MB entrance, in patients with MI by MDCT images, and further tried to elucidate a cutoff value of anatomical properties of MB causing the formation of culprit lesions at the LAD segment proximal to MB.…”

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confidence: 87%

Anatomical Characteristics of Myocardial Bridge in Patients With Myocardial Infarction by Multi-Detector Computed Tomography

Takamura

Fujimoto

Nanjo

et al. 2011

Circ J

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Background: Recent development of multi-detector computed tomography (MDCT) has made the detection of myocardial bridge (MB) easier on the left anterior descending coronary artery (LAD). The LAD segment proximal to the MB is well known to be susceptible to atherosclerosis. Anatomical characteristics of MB on LAD in patients with myocardial infarction (MI) were examined by MDCT. Methods and Results:Subjects were 43 MI patients who had MB in the LAD and comprised 2 groups: 14 with culprit lesions in the LAD proximal to MB (culprit group) and 29 without culprit lesions in the LAD (non-culprit group). MB length, MB thickness, and the distance from the orifice of left main trunk (LMT) to MB entrance were compared. Age and coronary risk factors showed no significant difference between the 2 groups. MB length (P=0.011), MB thickness (P=0.035), and index of the length multiplied by thickness of MB (P=0.031) were significantly greater in the culprit group. The distance from the orifice of the LMT to MB entrance was significantly shorter in the culprit group (P=0.006).Conclusions: Anatomical properties of MB, such as length and thickness of MB as well as MB location, are associated with the formation of culprit lesions of LAD proximal to MB in MI. (Circ J 2011; 75: 642 - 648)

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Evaluation of Myocardial Bridge With Multidetector Computed Tomography

Cited by 22 publications

References 21 publications

Intramural Coronary Arterial Course Is Associated With Coronary Arterial Stenosis and Prognosis of Major Cardiac Events

Intramural Coronary Arterial Course Is Associated With Coronary Arterial Stenosis and Prognosis of Major Cardiac Events

Clinical value of the correlations of mural coronary artery compression extent with myocardial bridge length and thickness evaluated by 128-slice CT

Anatomical Characteristics of Myocardial Bridge in Patients With Myocardial Infarction by Multi-Detector Computed Tomography

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