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THE REPORT OF AAPM TASK GROUP 293: Size-Specific Dose Estimate (SSDE) for Head CT 6 1. Introduction The CT dose index value reported on a CT scanner during a patient exam (i.e., CTDIvol) does not rep- resent the absorbed dose to the patient on which the scan was performed. 1 To address the desire by the medical community to estimate actual patient dose, AAPM Report 204, published in 2011 ...
Report No. 204 - Size-Specific Dose Estimates (SSDE) in Pediatric and Adult Body CT Examinations (2011) Category: Reports There are approximately 80 million CT examinations performed in the United States annually. About 7 million of these occur on children (Mettler 2000).
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Size specific dose estimation on the basis of radiation exposure metrics such as volumetric CT dose index is a great step forward in our ability to monitor and control the radiation dose associated...
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3.2 Radiation dose analyses between subgroups. Spearman correlation analysis showed that CTDIvol had a strong positive correlation with Dw (R = 0.873, p = 0.000), and SSDE had a positive correlation with Dw (R = 0.705, p = 0.000). The scatter plots of CTDIvol, SSDE as function of Dw were shown in Fig 2.The dose analysis among the studied subgroups showed that CTDIvol, DLP, and SSDE increased ...
Size-specific dose estimates (SSDE) are the latest topic of interest in patient radiation-dose studies in computed tomography (CT). The aim of this study is to calculate and evaluate the doses (SSDE) by measuring the effective diameter (ED) of cross-sectional images collected during CT examinations of the chest and abdomen in Moroccan hospitals. Doses (SSDE) were calculated based on cross ...
To evaluate the accuracy of size-specific dose estimate (SSDE) calculation from center slice with water-equivalent diameter (Dw) and effective diameter (Deff). A total of 1812 CT exams (1583 adult and 229 pediatric) were included in this retrospective study. Dw and Deff were automatically calculated …