전산화단층 모의치료장치의 정도관리 항목 제안

• 영문명: Proposal of CT Simulator Quality Assurance Items
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 김연래(Yon-Lae Kim) 윤영우(Young-Woo Yoon) 정재용(Jae-Yong Jung) 이정우(Jeong-Woo Lee) 정진범(Jin-Beom Chung)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제44권 제4호, 367~373쪽, 전체 7쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2021.08.30

영문 초록

A quality assurance of computed tomography(CT) have done seven items that were water attenuation coefficient, noise, homogeneity, spatial resolution, contrast resolution, slice thickness, artifact using by standard phantom. But there is no quality assurance items and methods for CT simulator at domestic institutions yet. Therefore the study aimed to access the CT dose index(CTDI), table tilting, image distortion, laser accuracy, table movement accuracy and CT seven items for CT simulator quality assurance. The CTDI at the center of the head phantom was 0.81 for 80 kVp, 1.55 for 100 kVp, 2.50 for 120 ㎜, 0.22 for 80 kVp at the center of the body phantom, 0.469 for 100 kVp, and 0.81 for 120 kVp. The table tilting was within the tolerance range of ±1.0° or less. Image distortion had 1 ㎜ distortion in the left and right images based on the center, and the laser accuracy was measured within ±2 ㎜ tolerance. The purpose of this study is to improve the quality assurance items suitable for the current situation in Korea in order to protect the normal tissues during the radiation treatment process and manage the CT simulator that is implemented to find the location of the tumor more clearly. In order to improve the accuracy of the CT simulator when looking at the results, the error range of each item should be small. It is hoped that the quality assurance items of the CT simulator will be improved by suggesting the quality assurance direction of the CT simulator in this study, and the results of radiation therapy will also improve.

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

REFERENCES

키워드

전산화단층 모의치료장치 전산화단층 선량지수 테이블 기울기 영상왜곡 레이저 정확도 테이블 이동 정확도 CT simulator CT dose index Table tilting Image distortion Laser accuracy Table movement accuracy