※ 기관로그인 시 무료 이용이 가능합니다.
※ 학술발표대회집, 워크숍 자료집 중 4페이지 이내 논문은 '요약'만 제공되는 경우가 있으니, 구매 전에 간행물명, 페이지 수 확인 부탁 드립니다.
4,000원
원문정보
초록
영어
This research attempts to qualitatively evaluate the intensity change by radiopharmaceuticals and obtain computed tomography using phantom injected with various nuclide. Cylindrical phantom is used for comparing and analysing the effect on diagnosis image during radiopharmaceuticals inspection. Inside of the phantom, water is injected and computed tomography image is scanned. During nuclear medicine invitro, frequently used radiopharmaceuticals, 99mTcO4 20 mCi and 18F 14 mCi, is diluted in the water phantom and scanned in the same method. Traverse image obtained by CT scan is divided into six traverse image in the same slice of each scanned image. CT-number(HU) value of 10 measuring point is measured in 2 cm interval based on the center of the phantom. Measured HU value, based on the water phantom, is compared with the image after injecting 99mTcO4 and 18F. Average scale of water is 2.8~1.6 HU, 99mTcO4 is 3.0~1.6 HU and 18F is 1.2~0 HU. Average of water is 2.3 ± 0.17 HU, 99mTcO4 is 2.2 ± 0.85 HU and F-18 is 0.7 ± 0.95 HU. Based on water, reduced value of about 0.1 HU and about 0.5 HU is acquired from 99mTcO4 and F-18. Radionuclide used in nuclear medicine inspection utilizes 100~200 KeV energy and obtains image through scintillation camera and PET-CT utilizes 511 KeV positron annihilation energy to obtain image. What we learned from this research is that gamma rays from these energies used in CT scan for diagnosis purpose or radioactive therapy plan can change the intensity of the image. The nuclear medicine inspection for reducing the effect of emitted gamma ray diagnosis image should be obtained after a period of time considering half-life which would be reduced distortion or changed in image.
목차
Abstract Ⅰ. 서론 Ⅱ. 연구대상 및 방법 1. 사용재료 2. 실험 방법 Ⅲ. 결과 Ⅳ. 고찰 및 결론 참고문헌