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KMID : 1147120110170010001
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Journal of the Korean Society of Imaging Informatics in Medicine
2011 Volume.17 No. 1 p.1 ~ p.9
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Physical Aspects and International Trends of Medical Radiation Exposure
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Kim Hee-Joung
Lee Chang-Lae
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Abstract
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All medical procedures using radiation have potential risks. Therefore, physicians who use radiation and patients should consider the potential benefits and risks altogether when they use medical imaging techniques associated with radiation. The frequency of the radiation exposure which incurs within the medical diagnostic imaging was increased due to the recent development of various imaging modalities. Moreover, the increase in use of radiation equipment and improper medical procedures also led to patient radiation exposure. Consequently, in order to reduce the medical radiation exposure, various prevention methods such as reduction strategy and DRL (Diagnostic Reference Level) have been introduced domestically as well as internationally. The standard unit of measure for absorbed radiation and how the radiation exposure has been controlled domestically and internationally will be reviewed, and then we would provide methods to protect radiation exposure from medical diagnostic imaging procedures. Especially, we would review the units of CT which has higher dose in medical radiation exposure and introduce the dose reduction techniques in CT according to each manufacturer. Finally, we would discuss several ways to reduce the patient dose reduction in diagnostic radiology. Hence, with the development of medical instruments and technology to reduce medical radiation exposure, both broader and deeper understanding of medical radiation exposure and the transformation of consciousness to optimization of protection in medical exposure to reduce the patient dose are necessary.
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KEYWORD
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radiation exposure, radiation protection, dose reduction, radiation units
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