A New Method for Estimating of Patient Effective Dose in Computed Tomography Based on Body Mass Index: Performance of the Method in Abdomen-Pelvic Examination

Abstract

Background and Objective: Along with all the benefits that CT-scan has, the dose is much higher than other radiology procedures. The nobility of the present scientific study was to investigate how the introduction of MDCT scanners and patient-size-dependent imaging protocols have affected patient doses.Materials and Methods: Demographic data of each patient were recorded as well as data from a CT scan of the abdomen and pelvic of 52 patients were studied. For assessment of patient and effective doses, the information related to the scan in ImPACT software was applied. The results are analyzed and regression was used in order to examine the relation between the results of the scan data in MATLAB environment. Findings:The research findings showed that the received dose to the most patients is the same as determined by the ICRP103. An average of the effective dose was less than predicted amount by ICRP103. In addition, to estimate the effective dose of the body, according to the patient's BMI, an equation was obtained that the results from this equation are corresponded to the calculated dose by Impact (R2>0.95). In addition, the method was proposed to predict the parameters of mA effand DLP resulted from the related scan. Conclusion:According to the results of this study, authors proposed a good alternative to estimate the effective dose according to BMI instead of ImPACT calculations for scanners and scanning conditions as well as a method to predict the effective dose by using the parameters of the CT system and BMI without being radiated on the patients.

Evaluasi Indeks Massa Tubuh (IMT) sebagai Dasar Penentuan SSDE (Size-Specific Dose Estimate) pada Pemeriksaan CT Scan Abdomen

“…Metode pencarian fsize berdasarkan IMT juga sesuai dengan penelitian sebelumnya bahwa pencarian fsize dengan IMT dapat dilakukan pada pemeriksaan CT scan kepala, torso, dan lutut (Alikhani dkk., 2018). IMT sendiri juga telah terbukti sebagai alternatif yang baik dalam menentukan dosis efektif pemeriksaan CT Scan abdomen-pelvis (Deevband, 2018).…”

Optimizing CT Abdomen–Pelvis Scan Radiation Dose: Examining the Role of Body Metrics (Waist Circumference, Hip Circumference, Abdominal Fat, and Body Mass Index) in Dose Efficiency

“…BMI, which considers both weight and height, is another crucial factor that could influence radiation dose requirements. The rationale is that these metrics, when considered, could lead to more precise and optimized dosing, potentially reducing the risk of overexposure in larger patients or underexposure in more minor patients [6][7][8].…”