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KMID : 0357520070300020129
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Journal of Radiological Science and Technology
2007 Volume.30 No. 2 p.129 ~ p.138
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The Evaluation of Image Quality and Radiation Dose in Multi-Detector CT
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Han Dong-Kyoon
Ko Shin-Gwan
Yang Han-Jun
Ko Shin-Gwan
Yang Han-Jun
Kim Moon-Chan
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Abstract
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The Purpose of this study is to suggest the basic data for making good quality image and maintaining equipment homeostasis by accepting image quality evaluation and radiation dose evaluation in Multi-detector CT. In this study we surveyed 14 CT equipments in Seoul. The results obtained were as follows ; CT number was . Noise was . Uniformity was . High contrast resolution was and low contrast resolution was . For CTDI, the central part and the peripheral part of head phantom were and , respectively. For body phantom, the central part and the peripheral part of head phantom were and , respectively. CTDIw was and CTDIw/100 mAs was using head phantom. CTDIW was and CTDIw/100 mAs was using body phantom. Therefore, CT number, noise, high contrast resolution, low contrast resolution, CTDI, CTDIw and CTDIw/100 mAs of MDCT were showed excellently in all equipments.
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KEYWORD
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MDCT, Image quality, radiation dose, AAPM phantom, Ionization Chamber
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