256层CT冠状动脉前瞻性与回顾性心电门控成像质量和辐射剂量对比分析
256층CT관상동맥전첨성여회고성심전문공성상질량화복사제량대비분석
Comparative analysis of image quality and radiation dose in patients with prospective versus retrospective electrocardiography gated 256-slice CT coronary angiography
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