Clinical Imaging
Volume 34, Issue 2 , Pages 83-88, March 2010

Myocardial bridging on dual-source computed tomography: degree of systolic compression of mural coronary artery correlating with length and depth of the myocardial bridge

  • Shi-he Liu

      Affiliations

    • Shandong Medical Imaging Research Institute, Shandong University, Road Jing-Wu, No. 324, Jinan, 250021, PR China
    • Shandong Medical Imaging Research Institute, Road Jing-Wu, No. 324, Jinan, 250021, PR China. Tel.: +86 531 85186768.
    • ,
  • Qing Yang

      Affiliations

    • The Affilitated Hospital of Medical College Qingdao University, Road Jiang-Su, No. 16, Qingdao, 266000, PR China
    • ,
  • Jiu-hong Chen

      Affiliations

    • Siemens Ltd., China, Medical Solutions D Building, 7, Wangjing Zhonghuan Nanlu, Chaoyang District, Beijing, 100102, PR China
    • ,
  • Xi-ming Wang

      Affiliations

    • Shandong Medical Imaging Research Institute, Road Jing-Wu, No. 324, Jinan, 250021, PR China
    • ,
  • Min Wang

      Affiliations

    • Shandong Medical Imaging Research Institute, Shandong University, Road Jing-Wu, No. 324, Jinan, 250021, PR China
    • ,
  • Cheng Liu

      Affiliations

    • Shandong Medical Imaging Research Institute, Road Jing-Wu, No. 324, Jinan, 250021, PR China
    • Corresponding Author InformationCorresponding author. Shandong Medical Imaging Research Institute, Road Jing-Wu, No. 324, Jinan, 250021, PR China. Tel.: +86 531 85186768.

Received 3 March 2009; accepted 1 May 2009. published online 28 August 2009.

Abstract 

Objective

To investigate the correlation between the degree of systolic compression of mural coronary artery (MCA) and the length and depth of myocardial bridging (MB) with dual-source computed tomography (DSCT).

Methods

The length and depth of MB were measured from diastolic phase. All datasets were reconstructed in 5% steps of R-R interval. The optimum phases were chosen where the maximal and minimal diameters were shown. The degree of systolic compression of MCA was calculated. The correlation between length and depth of MB and the degree of systolic compression of MCA were analyzed by Pearson test.

Results

The minimal diameters were found in 27 sites (90.0%) from 30% to 35% R-R interval, and the maximal diameters were found in 27 sites (90.0%) from 70% to 80% R-R interval. The correlation between systolic compression of MCA and length of MB was not significant (r=0.096, P=.613); however, the correlation between systolic compression of MCA and the depth of MB was significant (r=0.675, P<.01).

Conclusion

The minimal and maximal diameters of MCA are usually demonstrated in 30–35% and 70–80% R-R reconstruction interval, respectively. The degree of systolic compression of MCA correlates well with the depth of MB.

Keywords: Coronary vessel anomalies, Dual-source computed tomography, Coronary compression

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PII: S0899-7071(09)00168-5

doi:10.1016/j.clinimag.2009.05.010

Clinical Imaging
Volume 34, Issue 2 , Pages 83-88, March 2010

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