Evaluasi Size Specific Dose Estimate Berdasarkan Diameter Efektif (SSDEDE) Pemeriksaan Abdomen di DKI Jakarta

Abstract

CTDIvol is one of CT Scans dose metric which calculated based on a phantom with a diameter of 16 cm or 32 cm. Therefore, CTDIvol does not accurately represent the patient's dose. Size-Specific Doses Estimate (SSDE) is a dose parameter for CT Scan patients that includes the patient's body size, namely DE (Effective Diameter). This study aims to report the SSDEDE and CTDIvol value of adult abdominal examination in DKI Jakarta and obtain their correlation values. This research was conducted at five hospitals in DKI Jakarta, where a sample of 20 abdominal CT scan patients was taken from each hospital. The SSDEDE value is obtained from the calculation with the equation listed in the AAPM report no. 204. The results showed that, in general, the value of the SSDEDE dose parameter was higher than CTDIvol in the same patients. In addition, South Jakarta had the highest SSDEDE and CTDIvol values, namely 38.534 mGy and 28.016 mGy. These results show the effect of patient size on dose calculations and SSDEDE shows the potential as a dose parameter in determining DRL as seen from the correlation coefficient value (R 2 ) of 0.8992.