두부 CT 검사 시 테이블 높이에 따른 선량과 화질에 관한 연구

• 영문명: A Study on Radiation Dose and Image Quality according to CT Table Height in Brain CT
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 김기원 오주영 민정환 이상선 이영봉 임경환 이윤
• 간행물 정보: 『방사선기술과학』제46권 제2호, 99~106쪽, 전체 8쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2023.04.30

영문 초록

The height of the table should be considered important during computed tomography (CT) examination, but according to previous studies, not all radiology technologists set the table at the patient's center at the examination, which affects the exposure dose and image quality received by the patient. Therefore, this study intends to study the image quality exposure dose according to the height of the table to realize the optimal image quality and dose during the brain CT scan. The head phantom images were acquired using Philips Brilliance iCT 256. When the image was acquired, the table height was adjusted to 815, 865, 915, 965, 1015, and 1030 mm, respectively, and each scan was performed 3 times for each height. For the exposure dose measurement, optically stimulated luminescence dosimeter (OSLD) was attached to the front, side, eye, and thyroid gland of the head phantom. In the signal to noise ratio (SNR) measurement result, The SNR values for each table height were all lower than 915 mm. As a result of exposure dose, the exposure dose on each area increased as the table height decreased. The height of the table has a close relationship with the patient's radiation exposure dose in the CT scan.

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

REFERENCES

키워드

컴퓨터단층촬영 테이블 두부 팬텀 광자극발광선량계 피폭선량 Computed Tomography CT Table Head Phantom Optically Stimulated Luminescence Dosimeter Exposure Dose