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
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Article info
Publication history
Published online: August 28, 2009
Accepted:
May 1,
2009
Received:
March 3,
2009
Identification
Copyright
© 2010 Published by Elsevier Inc. All rights reserved.
