Systolic Compression of a Myocardial Bridged Coronary Artery and its Morphologic Characteristics: A Combination Study of Computed Tomography Angiography and Invasive Angiography

Shabestari, Abbas Arjmand; Azma, Roxana; Nourmohammad, Armin; Shakiba, Madjid

doi:10.5812/iranjradiol.31647

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…In MB, LAD diameters may reduce after entrance into the myocardia. Although recent studies have mentioned this phenomenon (26,30), to the best of our knowledge, this is the first study to evaluate the effect of this phenomenon on the prediction of ischemia.…”

Section: Discussionmentioning

confidence: 95%

Diagnostic Ability of 384-Slice Computed Tomographic Angiography in Prediction of Myocardial Ischemia in Patients with Myocardial Bridging (MB) as Compared to SPECT-MPI Examination

et al. 2018

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Background: During the past decade, coronary computed tomographic angiography (CCTA) has become the primary non-invasive imaging technique for the assessment of myocardial bridging (MB). Objectivs: The aim of this study was to evaluate the ability of CCTA to predict myocardial ischemia in patients with MB. Patients and Methods: A total of 32 MB patients (21 males and 11 females) participated in this study. Eleven MB parameters were measured to assess the ability of CCTA to predict MB patients with ischemia. In order to evaluate ischemia, all the patients underwent single positron emission computed tomography-myocardial perfusion imaging (SPECT-MPI) examination. Results: Ischemia was observed in 17 patients (53.1%), while 15 patients (46.9%) did not show signs of ischemia. Out of the 32 patients, superficial MB was observed in 15 patients while deep MB was identified in 12, and borderline was observed in five patients. All MB examined parameters were found to be significantly different between ischemic and non-ischemic patients, except for the location and tunnel artery diameter in diastole. Moreover, a cut-off value of 0.65 mm was able to discriminate ischemia with a sensitivity of 100%, specificity of 93%, and yield area under the receiver operating characteristic (ROC) curve (AUC) of 0.996. Also, by considering the depth cut-off value of 1.75 mm, ischemia can be distinguished with sensitivity and specificity of 100%. MB length had a lower discrimination power, with a cut off value of 22.5 mm yield, 76% sensitivity, 67% specificity, and AUC = 0.810 in the diagnosis of ischemia. Conclusion: CCTA was a reliable modality with high accuracy to depict MB, identify high risk MB, and prevent unnecessary SPECT-MPI examination.

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Section: Discussionmentioning

confidence: 95%

Diagnostic Ability of 384-Slice Computed Tomographic Angiography in Prediction of Myocardial Ischemia in Patients with Myocardial Bridging (MB) as Compared to SPECT-MPI Examination

et al. 2018

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“…Myocardial bridging of a coronary artery is defined as a band of myocardium overlying a segment of a coronary artery. 32,33 It is most commonly localised in the middle segment of the LAD.…”

Section: Myocardial Bridging Of Coronary Arteriesmentioning

confidence: 99%

Significance of Coronary Artery Anomalies and Variants Found on Coronary Computed Tomography Angiography

Yarlagadda

2020

Hong Kong Journal of Radiology

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Objective: We sought to assess the significance of coronary artery anatomical variants and anomalies found in patients referred for coronary computed tomographic angiography (CTA). Methods: Imaging was done on a 128-detector computed tomography machine followed by three-dimensional reconstruction. Pre-and post-contrast angiographic images of the coronary arteries of 108 patients from January 2013 to December 2016 were retrospectively analysed for coronary artery anomalies and variants. Results: A total of 74 anomalies and variants were noted in 58 of 108 patients. Among variants, co-dominance, left dominant circulation, ramus intermedius, early origin of posterior descending artery (PDA), and double PDA were noted. Among anomalies, right coronary artery (RCA) origin from the ascending aorta and left coronary sinus, left circumflex artery (LCX) arising from the RCA, malignant course of RCA, retrograde aortic course of LCX, myocardial bridging, and coronary hypoplasia were noted. Conclusion: Prior assessment for coronary anomalies and variants can guide the interventionalist and surgeon before coronary angioplasty and coronary artery bypass grafting, thereby reducing procedural complications.

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Contrast opacification difference of mural artery and the transluminal attenuation gradient on coronary computed tomography angiography for detection of systolic compression of myocardial bridge

et al. 2018

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Systolic Compression of a Myocardial Bridged Coronary Artery and its Morphologic Characteristics: A Combination Study of Computed Tomography Angiography and Invasive Angiography

Cited by 3 publications

References 12 publications

Diagnostic Ability of 384-Slice Computed Tomographic Angiography in Prediction of Myocardial Ischemia in Patients with Myocardial Bridging (MB) as Compared to SPECT-MPI Examination

Diagnostic Ability of 384-Slice Computed Tomographic Angiography in Prediction of Myocardial Ischemia in Patients with Myocardial Bridging (MB) as Compared to SPECT-MPI Examination

Significance of Coronary Artery Anomalies and Variants Found on Coronary Computed Tomography Angiography

Contrast opacification difference of mural artery and the transluminal attenuation gradient on coronary computed tomography angiography for detection of systolic compression of myocardial bridge

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