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KMID : 0357520090320020129
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Journal of Radiological Science and Technology
2009 Volume.32 No. 2 p.129 ~ p.140
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Application of Low-Dose CT for Screening of Lung Disease
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Lee Won-Jeong
Choi Byung-Soon
Sun Jong-Lyool
Bae Seok-Hwan
Park Young-Sun
Bae Seok-Hwan
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Abstract
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As CT has been increasingly used as an accurate screening tool for lung disease, radiation dose becomes an important issue for both radiographers and patients. Many researches have been done for a low-dose CT as a screening tool for early detection of asymptomatic lung diseases. From those studies, it has been reported that chest dose rate from the low-dose CT is considerably lower than from standard CT. The patient dose is determined by scanning parameters such as kVp, mAs, pitch, scan time and the radiation risk of lung in screening examination may not be negligible. Herein, we suggest that Low-dose CT is useful as a screening tool in routine clinical practice on the basis of published articles, but further study is necessary because Low-dose CT has poor sensitivity and specificity for screening early stage of lung cancer according to the results of the studies. This article is to provide a brief overview of the screening examinations by Low-dose CT.
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KEYWORD
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Low-dose CT, Lung Disease, Lung Cancer, Screening Examination, Early Detection
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