Application of Dual-Source CT TurboFlash Coarse Pitch Scanning in Coronary Artery Imaging ()
ABSTRACT
Objective: To
compare and analyze the image quality and radiation dose of three scanning
modes of dual-source CT coronary artery retrospectively, and to discuss the
application value of TurboFlash coarse pitch scanning mode. Methods: The
imaging data of 100 patients who underwent CT coronary angiography (CCTA) using
Siemens force CT retrospective gated triggering spiral scan (RES-SPIRAL),
adaptive prospective gated triggering sequence scan (SEQ) and prospective coarse
pitch scan (TurboFlash) retrospectively was collected. The image quality was
evaluated by objective and subjective methods. The effective radiation dose of
patients was compared and analyzed, and the indications of the three scanning
modes were analyzed. The application value of dual-source CT TurboFlash coarse
pitch scanning in coronary artery imaging was evaluated. Results: The
results showed that the left main coronary artery, the right coronary artery
and their tertiary branches could be clearly displayed in the three groups of
images: the left anterior descending branch, the left
circumflex branch, and their three-level branches. There was no statistical
difference in subjective image quality among the three groups of pictures (P > 0.05).
There was no statistical difference in objective evaluation indexes, such as CT value, SNR, CNR and Noise among the
three groups (P > 0.05). The patient radiation dose results showed
that the effective radiation dose ED of RES-SPIRA scan was (9.22 ± 1.33)
mSv. The dose of SEQ was (2.88 ± 2.47)
mSv, and the dose of TurboFlash was (0.51 ± 0.16) mSv. There was significant difference in
comparison of the three groups (P < 0.05). RES-spiral scanning had the highest radiation
dose and TurboFlash coarse pitch scanning (TurboFlash) had the lowest radiation
dose. Conclusion: TurboFlash coarse pitch scanning is low in dosage, fast in speed and wide in
adaptability. It is especially suitable for the elderly, children, coma and
other patients who cannot cooperate with breath-holding examination, as well as
for the screening and examination of coronary artery diseases in asymptomatic
population. Undoubtedly, it is a worthy method of heart coronary artery
examination.
Share and Cite:
Zhuo, S. , Chen, X. , Yu, J. , He, H. , Xu, G. and Xie, C. (2018) Application of Dual-Source CT TurboFlash Coarse Pitch Scanning in Coronary Artery Imaging.
Open Journal of Medical Imaging,
8, 64-72. doi:
10.4236/ojmi.2018.83008.
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