학술논문
Evaluation of the Availablity of the Wide Coverage Volume Axial Mode in Pediatric Cardiac CT
이용수 127
- 영문명
- 소아 심장 CT 검사 시 Wide coverage volume axial mode의 유용성 평가
- 발행기관
- 한국방사선학회
- 저자명
- Ki Seok Park(박기석) Dong Hyun Kim(김동현)
- 간행물 정보
- 『한국방사선학회 논문지』 제13권 제5호, 683~689쪽, 전체 7쪽
- 주제분류
- 공학 > 기타공학
- 파일형태
- 발행일자
- 2019.10.30
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국문 초록
소아의 선천적 심장질환 진단을 위해 High Pitch Mode를 사용하여 획득한 소아 심장 CT 영상과 Wide Coverage Volume Axial Mode를 사용하여 획득한 소아 심장 CT 영상으로부터 환자의 피폭선량과 각 영상의 화질을 비교 및 분석하여 Wide Coverage Volume Axial Mode의 유용성을 평가해보고자 한다. 소아 심장 CT검사 시 High Pitch Mode와 Wide Coverage Volume Axial Mode를 각각 50명 총 100명의 환자를 대상으로 시행하으며, 각 프로토콜로부터 얻은 영상을 이용하여 환자의 피폭선량을 비교하였다. 각 영상에 ROI를 설정해 SNR과 CNR을 산출하여 영상의 화질을 비교하였다. High Pitch Mode에 비해 Wide Coverage Volume Axial Mode를 사용하여 검사하였을 때 환자의 피폭선량이 13.07% 감소하였고, SNR과 CNR이 향상되었다. Wide Coverage Volume Axial Mode는 고속 회전 스캐너를 이용하여 조사시간을 줄이고, 저선량 기술인 ASiR-V를 통해 High Pitch Mode를 사용했을 때보다 환자의 피폭선량이 감소하고 영상의 화질 또한 향상되는 유용한 검사라 할 수 있다.
영문 초록
We are trying to evaluate usefulness of Wide Coverage Volume Axial Mode by comparing and analyzing for exposure doses to patients and video quality extracted from two materials. First material is a computer tomography scanning of paediatric cardiac made by using High Pitch Mode, which is designed for diagnosing Congenital cardiac diseases. Second material is computer tomography scanning of paediatric cardiac made by using Wide Coverage Volume Axial Mode.
When we did computer tomography scanning of paediatric cardiac, we used High Pitch Mode and Wide Coverage Volume Axial Mode to 50 patients of each, overall 100 patients. Also, we compared exposure doses to patients using videos got from each protocol. Then we compared video quality by calculating SNR and CNR by setting ROI of each. Not only exposure doses to patients were reduced by 13.07 %, but also SNR and CNR were improved when testing used Wide Coverage Volume Axial Mode rather than using High Pitch Mode. Wide Coverage Volume Axial Mode reduced testing time by using high-speed scanner. Furthermore, we can find out that Wide Coverage Volume Axial Mode is an useful method through improving video quality and reducing exposure doses to patients than using High Pitch Mode from ASiR-V, which is low-dose technology.
목차
Ⅰ. INTRODUCTION
Ⅱ. MATERIAL AND METHODS
Ⅲ. RESULT
Ⅳ. DISCUSSION
V. CONCLUSION
키워드
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