Journal
EUROPEAN JOURNAL OF RADIOLOGY
Volume 110, Issue -, Pages 14-21Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.ejrad.2018.11.002
Keywords
Radiation protection; Radiation dosage; Tomography, X-Ray computed; Image enhancement; Radiation monitoring; Decision support systems, clinical
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Although radiation dose in computed tomography (CT) decreased and CT became safer examinations than before, CT is the most significant source of the medical radiation exposure. Knowledge about available radiation dose reduction methods in CT is essential. Substantial improvement occurred regarding tube current selection (automatic exposure control) and image production method (iterative reconstruction). Optimizing the tube potential selection is expected to contribute to further CT radiation dose reduction. This review article summarizes the principles of radiation dose reduction in CT, principal methods of radiation dose reduction, auxiliary measures of radiation dose saving and recent issues of low dose CT.
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