Radiation Dose to the Breast by 64-slice CT
| Autor: | Mary C. Mahoney, R.C. Samaratunga, R. Edward Hendrick, Michael Lamba, Zhihua Qi, Hua-Hsuan Chen, Lisa C. Lemen |
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| Rok vydání: | 2016 |
| Předmět: |
Protocol (science)
Scanner medicine.medical_specialty Dosimeter Virtual colonoscopy medicine.diagnostic_test business.industry Radiation dose 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine medicine.anatomical_structure 030220 oncology & carcinogenesis medicine Abdomen Radiology Nuclear Medicine and imaging Radiology skin and connective tissue diseases Nuclear medicine business Pelvis Lung cancer screening |
| Zdroj: | Academic Radiology. 23:987-993 |
| ISSN: | 1076-6332 |
| Popis: | Rationale and Objectives This work aimed to study the effects of scanner model and study protocol on radiation dose received by breast tissues from 64-slice computed tomography (CT) studies. Materials and Methods Four scanner models and three study protocols were used in scanning an anthropomorphic phantom with breast modules. Each protocol follows recommendations or guidelines from the American Association of Physicists in Medicine and the American College of Radiology. Twenty thermoluminescent dosimeters were placed inside the breast modules to measure breast tissue doses. Both the absolute and the normalized breast tissue doses were analyzed. Results The mean glandular doses of a lung cancer screening CT, a chest/abdomen/pelvis CT, and a virtual colonoscopy CT are equivalent to less than 1, 5–7, and 1–3 two-view digital mammograms, respectively, for a standard-sized patient. The normalized breast dose differs significantly (P |
| Databáze: | OpenAIRE |
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