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KMID : 1131320150170010165
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Journal of Korean Society of Computed Tomographic Technology
2015 Volume.17 No. 1 p.165 ~ p.170
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A study on the exposure dose reduction for the 64 Volume CT Chest and Abdomen - Pelvic examinations
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Park Byeong-Jae
Kim Yeong-Deok
Jeong Chang-Gi
Lee Jong-Ho
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Abstract
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Purpose : In this study, we investigate which we can reduce the dose of radiation. Retrospective Comparison of Radiation dose at the 64 Volume CT. We compared CT dose index Chest examinations finished and Abdomen - Pelvic examinations between Chest and Abdomen - Pelvic examinations at the same time.
Materials and Methods : 41 patients who admitted to hwasun CNUH during January 2013 to June 2014 and underwent CT Chest and Abdomen - Pelvic examination, were studied. Of these patients, 28 were men 13 were women. The average of ages was 62.7 years old. Group a (Chest examinations finished and Abdomen - Pelvic examinations, N = 41), group b( Chest and Abdomen - Pelvic examinations at the same time, N = 41), were classified as. GE Light Speed VCT 64 System was used. All patients performed the retrospective. Group a and group b which obtained on console, which provides total Dose Length Product (hereinafter DLP, the unit mGyㆍcm).
Result : Group a average DLP value were 535.92 mGyㆍcm and group b were 415.82 mGyㆍcm. The mean average decreased rate 22.36 percent.
Conclusion : The use of Chest and Abdomen - Pelvic examinations at the same time on the exposure dose reduction.
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KEYWORD
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CT dose, exposure dose reduction, average decreased rate, Chest examinations Abdomen - Pelvic examinations
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