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Optimization of Retrospective Gated-ECG Coronary Computed Tomography Angiography by Dose Reduction in Patients with Different Body Mass Indexes | ||
| Journal of Biomedical Physics and Engineering | ||
| مقالات آماده انتشار، اصلاح شده برای چاپ، انتشار آنلاین از تاریخ 16 اسفند 1401 اصل مقاله (542.18 K) | ||
| نوع مقاله: Original Research | ||
| شناسه دیجیتال (DOI): 10.31661/jbpe.v0i0.2209-1537 | ||
| نویسندگان | ||
| Behzad Fazlkhah1؛ Mona Fazel Ghaziyanii1؛ Leyla Dinparast2؛ Vahid Alinejad3؛ Yunus Soleymani4؛ Davood Khezerloo* 1 | ||
| 1Department of Radiology, Faculty of Alliance Medical Sciences, Tabriz University of Medical Sciences Tabriz, Tabriz, Iran | ||
| 2Department of Radiology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran | ||
| 3Department of Biostatistics, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran | ||
| 4Department of Neuroscience and Addiction Studies, School of Advance Technologies of Medicine, Tehran University of Medical Sciences, Tehran, Iran | ||
| چکیده | ||
| Background: The reduction of patient radiation dose in coronary Computed Tomography Angiography (CCTA) with acceptable image quality is considered an important factor in the research. Objective: This study aims to optimize the CCTA protocol using a retrospective Electrocardiogram (ECG)-gated axial scan protocol in patients with different Body Mass Indexes (BMIs). Material and Methods: In this cross-sectional study, 66 patients into three main groups: 80 kVp (Group A), 100 kVp (Group B), and 120 kVp (Group C), underwent CCTA. Each group was then divided into two subgroups of BMI<25 and >25 kg/m2. Image noise, mean vascular attenuation at the aorta, signal-to-noise ratio (SNR), and Contrast-to-Noise Ratio (CNR) at five regions of coronary arteries, in which Coronary artery anomalies are common were qualitatively evaluated by subjective image quality analysis. Results: At each kVp, there were no significant differences in CNR, SNR, noise level, and the effective dose between BMI>25 kg/m2 and BMI<25 kg/m2. The effective radiation dose of groups A, B, and C were 4.16, 8.46, and 14.3 mSv, respectively. Subjective image quality assessment scores were 3.18, 3.5, and 3.73 out of 4 in groups A, B, and C, respectively. Conclusion: Patient radiation dose using retrospective ECG-gated CCTA can be reduced by about 70% at 80 kVp, which is almost close to the prospective CCTA dose ranges. The retrospective CCTA at 80 kVp can be optimized even in overweight patients (BMI>25 kg/m2). | ||
| کلیدواژه‌ها | ||
| Computed Tomography Angiography؛ Retrospective Computed Tomography Angiography؛ Electrocardiography؛ Low Dose CT Angiography؛ Radiation Dosage؛ Effective Radiation Dose؛ Tube Voltage Reduction | ||
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آمار تعداد مشاهده مقاله: 106,360 تعداد دریافت فایل اصل مقاله: 129 |
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