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Updated: Apr 15, 2026

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
Published on: February 21, 2025
Single- versus multi-phase acquisition protocol for prospective-triggered sequential dual-source CT coronary
Wei Huang1, Yiming Xu2, Daoyan Lu2
1Department of Medical Imaging, Nanjing Jinling Hospital, Southern Medical University (Guangzhou), 305# Eastern Zhongshan Road, Nanjing 210002, China; Department of Medical Imaging, Huai'an First People's Hospital, Nanjing Medical University, 6# Western Beijing Road, Huai'an 223300, China.
Objective:
To investigate image quality and radiation dose of single- versus multi-phase acquisition protocol for prospective-triggered sequential dual-source computed tomography (CT) coronary angiography.
Materials And Methods:
A total of 140 patients were randomly assigned to single- or multi-phase group. Image quality and radiation dose were compared.
Results:
No significant difference was found in image quality between the two groups. Effective dose of single-phase group was 21.6% lower than that of multi-phase group (P<.001).
Conclusions:
Prospective-triggered sequential dual-source CT coronary angiography using single-phase protocol can reduce radiation dose without sacrifice of image quality in diastole compared with multi-phase protocol.
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