This study has purpose to evaluate availability, Sequence and Volume axial, through comparing efficient dose and image quality from the devices in Coronary CT Angiography. We selected 100 patients classified into two groups, Sequence and Volume axial group. We analyzed patient dose and image quality. SNR of Sequence is 22.55% in RCA higher than Volume axial. SNR of Volume axial 22.39% in AA, 18.38% in LV higher than Sequence.(p>0.05) CNR of Volume axial is 23.20% in AA, 24.64% in LV, 15.52% in RCA higher than Sequence.(p>0.05) CTDIVOL of sequence is 15.81% lower(p>0.05), DLP is 35.61% lower than in Volume axial(p<0.05). Sequence is used with 40% lower contrast media than Volume axial, however, there is not significant difference in CNR. In DLP, which is the indicator of patient dose, was also low. Sequence has benefits of patient dose and the amount of contrast media, on the other hand, has a difficulty for breathing noncooperation of patients in clinical situation. In this situation, short scan time of Volume axial can be a benefit for prevention of repeat-exam and motion artifact. Therefore, it is considered that technician's selection of devices, Sequence and Volume axial, taking account of diverse clinical situation is important to maximize efficiency for devices.
목차
Abstract Ⅰ. 서론 Ⅱ. 대상 및 방법 1. 연구 대상 및 측정기기 2. 검사방법 및 촬영조건 3. 영상평가 4. 선량 평가 5. 통계 분석 Ⅲ. 결과 Ⅳ. 고찰 Ⅴ. 결론 참고문헌