DOI:10.2214/AJR.06.5087.1
AJR 2006; 187:W663
© American Roentgen Ray Society
Reply
Mecit Kantarci and
Ednan Bayram
Atatürk University Erzurum, Turkey
WEB—This is a Web exclusive article.
We thank Drs. Nakaura, Awai, and Yamashita for their comments related to
our article [1]. It is likely
(from previous studies) that myocardial bridging incidence may be higher in
pathology studies [2]. In our
study, at first, we investigated the presence of myocardial bridging on axial
images. Later, we checked suspicious regions on the sagittal plane as well.
The shifting of coronary arteries onto the myocardium (by myocardial fibers)
was important in order to diagnose myocardial bridging on sagittal images.
Perhaps we may have failed to detect superficial myocardial bridges that do
not cause shifting because of limitations in spatial resolution of our 16-MDCT
scanner.
Nakaura et al. found a higher myocardial bridging incidence (23.9%) using a
40-MDCT scanner in their study than that of our study (3.5%). We believe that
this difference may result from the difference in the number of detectors for
the scanners used. The incidence with a 64- or 256-detector scanner may be
higher and may even be as high as the level of incidences reported in
pathology studies because spatial resolution is increased with the number of
detectors.
References
- Kantarci M, Duran C, Durur I, et al. Detection of myocardial
bridging with ECG-gated MDCT and multiplanar reconstruction.
AJR 2006; 186(6
suppl 2): S391-S394[Abstract/Free Full Text]
- Mohlenkamp S, Hort W, Ge J, Erbel R. Update on myocardial bridging.
Circulation 2002;206
: 2616-2622
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