Department of Radiology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
Department of Radiology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
Department of Radiology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
Department of Radiology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
Department of Radiology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
Department of Health Records Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
Department of Radiology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
tube voltage; contrast agent; coronary CT angiography; radiation dose; iodine intake;