The effective and collective dose to patients undergoing abdominopelvic and trunk computed tomography examinations: A Belgian multicentre study
| Autor: | Koenraad Verstraete, Bieke De Roo, Pieter Hoste, Nele Stichelbaut, Klaus Bacher |
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| Rok vydání: | 2019 |
| Předmět: |
Adult
Male Guidelines as Topic Computed tomography Radiation Dosage Effective dose (radiation) Pelvis 030218 nuclear medicine & medical imaging Young Adult 03 medical and health sciences Population estimate 0302 clinical medicine Belgium Ct examination Abdomen Tube current modulation Humans Medicine Radiology Nuclear Medicine and imaging Aged Retrospective Studies Aged 80 and over medicine.diagnostic_test business.industry Torso General Medicine Middle Aged Radiation Exposure Collective dose Trunk Radiation exposure 030220 oncology & carcinogenesis Female Guideline Adherence Tomography X-Ray Computed business Nuclear medicine |
| Zdroj: | European Journal of Radiology. 111:81-87 |
| ISSN: | 0720-048X |
| Popis: | Objectives This study aims to evaluate the radiation exposure to patients undergoing an abdominopelvic or a chest and abdominopelvic (trunk) CT examination and to assess compliance to imaging referral guidelines. Methods To this end, 357 standard abdominopelvic and trunk CT scans were collected from 8 Belgian institutions in 2011 and 2015. Effective dose (E) and collective dose were calculated using CT dose descriptors (CTDIvol and DLP), which were obtained from dose reports generated by the CT scanner. Subsequently, these CT requests were compared against the national referral guidelines to assess compliance. Population estimates for dose and compliance were obtained using multilevel linear regression and generalized estimating equation models. Results Between 2011 and 2015, a significant decrease of 28% in CTDIvol and DLP was found for abdominopelvic CT. The corresponding E decreased by 27%, and the collective dose by 23%. For trunk CT, a non-significant decrease of 6% was found in CTDIvol and a significant decrease of 14% in both DLP and E. However, the collective dose of trunk examinations increased by 39%. In 2011, 24% of the abdominopelvic examinations were not compliant with the guidelines, whereas this percentage dropped to 17% in 2015. Non-justified examinations accounted for 8% and 12% of all trunk CT scans in 2011 and 2015, respectively. Conclusion Between 2011 and 2015, there was a decrease in dose for patients undergoing abdominopelvic or trunk CT in Belgium. However, a fraction of the estimated doses are linked to unnecessary CT examinations, which should be avoided. |
| Databáze: | OpenAIRE |
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