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Fazlkhah, Behzad, Fazel Ghaziyanii, Mona, Dinparast, Leyla, Alinejad, Vahid, Soleymani, Yunus, Khezerloo, Davood. (1401). Optimization of Retrospective Gated-ECG Coronary Computed Tomography Angiography by Dose Reduction in Patients with Different Body Mass Indexes. سامانه مدیریت نشریات علمی, (), -.
Behzad Fazlkhah; Mona Fazel Ghaziyanii; Leyla Dinparast; Vahid Alinejad; Yunus Soleymani; Davood Khezerloo. "Optimization of Retrospective Gated-ECG Coronary Computed Tomography Angiography by Dose Reduction in Patients with Different Body Mass Indexes". سامانه مدیریت نشریات علمی, , , 1401, -.
Fazlkhah, Behzad, Fazel Ghaziyanii, Mona, Dinparast, Leyla, Alinejad, Vahid, Soleymani, Yunus, Khezerloo, Davood. (1401). 'Optimization of Retrospective Gated-ECG Coronary Computed Tomography Angiography by Dose Reduction in Patients with Different Body Mass Indexes', سامانه مدیریت نشریات علمی, (), pp. -.
Fazlkhah, Behzad, Fazel Ghaziyanii, Mona, Dinparast, Leyla, Alinejad, Vahid, Soleymani, Yunus, Khezerloo, Davood. Optimization of Retrospective Gated-ECG Coronary Computed Tomography Angiography by Dose Reduction in Patients with Different Body Mass Indexes. سامانه مدیریت نشریات علمی, 1401; (): -.

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  XML اصل مقاله (542.18 K)
نوع مقاله: Original Research
نویسندگان
Behzad Fazlkhahorcid 1؛ Mona Fazel Ghaziyaniiorcid 1؛ Leyla Dinparastorcid 2؛ Vahid Alinejadorcid 3؛ Yunus Soleymaniorcid 4؛ Davood Khezerloo email orcid 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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