Analysis of statistical methods for estimating standard radiation doses for patients undergoing computed tomography at the A.I. Burnazyan Federal Medical Biophysical Center
This study compares standard radiation dose estimates for patients undergoing computed tomography (CT) of major anatomical regions at the A.I. Burnazyan Federal Medical Biophysical Center using three different statistical approaches. A total of 4,854 CT examinations performed in 2024 were analyzed....
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Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev
2025-07-01
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| Series: | Радиационная гигиена |
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| Online Access: | https://www.radhyg.ru/jour/article/view/1148 |
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| author | E. I. Matkevich A. G. Sivenkov A. N. Bashkov A. S. Samoylov |
| author_facet | E. I. Matkevich A. G. Sivenkov A. N. Bashkov A. S. Samoylov |
| author_sort | E. I. Matkevich |
| collection | DOAJ |
| description | This study compares standard radiation dose estimates for patients undergoing computed tomography (CT) of major anatomical regions at the A.I. Burnazyan Federal Medical Biophysical Center using three different statistical approaches. A total of 4,854 CT examinations performed in 2024 were analyzed. For most anatomical regions, the standard dose calculated using Method 1 (entire patient cohort with an average body weight of 76–85 kg) was significantly higher than that obtained using Method 2 (patients selected with a body weight of 70 ± 5 kg), with statistically significant differences (p < 0.001).Comparison of doses calculated by Method 1 and Method 3 (linear regression modeling based on the entire cohort to estimate the dose for a "standard" 70 kg patient) revealed similar values, reflecting the influence of the overall weight distribution on the final dose estimates. When comparing Method 2 and Method 3—both applied to estimate the dose for a “standard” patient—it was found that Method 2 yielded lower values, with differences ranging from 1.1 to 1.5 folds. For example, for the most extensive combined anatomical regions, the effective dose per a non-contrast study was 6.3 mSv (Method 2) and 9.34 mSv (Method 3), and for the contrast-enhanced CT of the abdominal and retroperitoneal organs, 18.8 mSv (Method 2) and 20.11 mSv (Method 3). Conclusion: The application of three statistical methods for assessing standard effective radiation doses in CT was analyzed. The accuracy and comparability of standard dose estimates for the purpose of exposure control depend on the consistency of methodological approaches used to determine the need for dose optimization. |
| format | Article |
| id | doaj-art-f001a8e2effc4e0e9c6edf8e61595e26 |
| institution | Kabale University |
| issn | 1998-426X |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev |
| record_format | Article |
| series | Радиационная гигиена |
| spelling | doaj-art-f001a8e2effc4e0e9c6edf8e61595e262025-08-20T03:39:14ZengSaint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. RamzaevРадиационная гигиена1998-426X2025-07-01182162810.21514/1998-426X-2025-18-2-16-28904Analysis of statistical methods for estimating standard radiation doses for patients undergoing computed tomography at the A.I. Burnazyan Federal Medical Biophysical CenterE. I. Matkevich0A. G. Sivenkov1A. N. Bashkov2A. S. Samoylov3State Research Center – Burnasyan Federal Medical Biophysical Center of Federal Medical Biological AgencyState Research Center – Burnasyan Federal Medical Biophysical Center of Federal Medical Biological AgencyState Research Center – Burnasyan Federal Medical Biophysical Center of Federal Medical Biological AgencyState Research Center – Burnasyan Federal Medical Biophysical Center of Federal Medical Biological AgencyThis study compares standard radiation dose estimates for patients undergoing computed tomography (CT) of major anatomical regions at the A.I. Burnazyan Federal Medical Biophysical Center using three different statistical approaches. A total of 4,854 CT examinations performed in 2024 were analyzed. For most anatomical regions, the standard dose calculated using Method 1 (entire patient cohort with an average body weight of 76–85 kg) was significantly higher than that obtained using Method 2 (patients selected with a body weight of 70 ± 5 kg), with statistically significant differences (p < 0.001).Comparison of doses calculated by Method 1 and Method 3 (linear regression modeling based on the entire cohort to estimate the dose for a "standard" 70 kg patient) revealed similar values, reflecting the influence of the overall weight distribution on the final dose estimates. When comparing Method 2 and Method 3—both applied to estimate the dose for a “standard” patient—it was found that Method 2 yielded lower values, with differences ranging from 1.1 to 1.5 folds. For example, for the most extensive combined anatomical regions, the effective dose per a non-contrast study was 6.3 mSv (Method 2) and 9.34 mSv (Method 3), and for the contrast-enhanced CT of the abdominal and retroperitoneal organs, 18.8 mSv (Method 2) and 20.11 mSv (Method 3). Conclusion: The application of three statistical methods for assessing standard effective radiation doses in CT was analyzed. The accuracy and comparability of standard dose estimates for the purpose of exposure control depend on the consistency of methodological approaches used to determine the need for dose optimization.https://www.radhyg.ru/jour/article/view/1148ionizing radiationradiation diagnosticscomputed tomographyradiation dosesstandard radiation dosesstatistical methods of assessmentsmall samples |
| spellingShingle | E. I. Matkevich A. G. Sivenkov A. N. Bashkov A. S. Samoylov Analysis of statistical methods for estimating standard radiation doses for patients undergoing computed tomography at the A.I. Burnazyan Federal Medical Biophysical Center Радиационная гигиена ionizing radiation radiation diagnostics computed tomography radiation doses standard radiation doses statistical methods of assessment small samples |
| title | Analysis of statistical methods for estimating standard radiation doses for patients undergoing computed tomography at the A.I. Burnazyan Federal Medical Biophysical Center |
| title_full | Analysis of statistical methods for estimating standard radiation doses for patients undergoing computed tomography at the A.I. Burnazyan Federal Medical Biophysical Center |
| title_fullStr | Analysis of statistical methods for estimating standard radiation doses for patients undergoing computed tomography at the A.I. Burnazyan Federal Medical Biophysical Center |
| title_full_unstemmed | Analysis of statistical methods for estimating standard radiation doses for patients undergoing computed tomography at the A.I. Burnazyan Federal Medical Biophysical Center |
| title_short | Analysis of statistical methods for estimating standard radiation doses for patients undergoing computed tomography at the A.I. Burnazyan Federal Medical Biophysical Center |
| title_sort | analysis of statistical methods for estimating standard radiation doses for patients undergoing computed tomography at the a i burnazyan federal medical biophysical center |
| topic | ionizing radiation radiation diagnostics computed tomography radiation doses standard radiation doses statistical methods of assessment small samples |
| url | https://www.radhyg.ru/jour/article/view/1148 |
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