| LIU Jian-xin,LIU Jian,DOU Yan-bin,et al.Comparative study of image quality and radiation dose between prospective and retrospective ECG gating technique in coronary artery imaging with 64-slice spiral CT[J].Chinese Journal of Radiological Medicine and Protection,2009,29(3):320-322 |
| Comparative study of image quality and radiation dose between prospective and retrospective ECG gating technique in coronary artery imaging with 64-slice spiral CT |
| Received:October 27, 2008 |
| DOI：10.3760/cma.j.issn.0254-5098.2009.03.028 |
| KeyWords:64-slice spiral CT ECG gating Coronary artery Radiation dose |
| FundProject: |
| Author Name | Affiliation | | LIU Jian-xin | Department of Radiology, Peking University First Hospital, Beijing 100034, China | | LIU Jian | Department of Radiology, Peking University First Hospital, Beijing 100034, China | | DOU Yan-bin | Department of Radiology, Peking University First Hospital, Beijing 100034, China | | WANG Ji-chen | Department of Radiology, Peking University First Hospital, Beijing 100034, China | | SUN Hong-yue | Department of Radiology, Peking University First Hospital, Beijing 100034, China |
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| Abstract:: |
| Objective To compare the image quality and radiation dose between prospective ECG-trigering and retrospective ECG gating technique in coronary artery imaging. Methods 33 patients suspected coronary artery disease were included in this study and divided into experimental group (prospective ECG-triggering coronary artery imaging, heart rate ＜65bpm, 16 patients)and control group (retrospective ECG gating coronary artery imaging, heart rate＜75bpm, 17 patients). Radiation dose was recorded for statistical analysis. At the same time, image quality was evaluated. Results There were no significant differences in image quality between two groups (P＞0.05). The mean DLP of experimental group (234.4 mGy·cm) was DLP of control group (974.4mGy·cm) 24.1%. The mean effective dose of prospective ECG gating coronary artery imaging was 3.2 mSv. Effective dose reduced 76.47%. Conclusions Prospective ECG gating coronary artery imaging can obtain the similar image quality compared with prospective ECG gating coronary artery imaging but the effective dose reduced 76.47%. Prospective ECG gating coronary artery imaging has clinical value to peoples who are able to not accept high radiation dose and with low heart rate. |
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