산란보정 전, 후의 SPECT 대조도 및 분해능 평가

• 영문명: Evaluation of Contrast and Resolution on the SPECT of Pre and Post Scatter Correction
• 발행기관: 대한핵의학기술학회
• 저자명: 서명덕(Myeong Deok Seo) 김영선(Yeong Seon Kim) 정요천(Yo Cheon Jeong) 이완규(Wan Kyu Lee) 송재범(Jae Beom Song)
• 간행물 정보: 『핵의학기술』Vol.14 No.1, 127~132쪽, 전체 6쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2010.06.30

영문 초록

Purpose: Because of limitation of image acquisition method and acquisition time, scatter correction cannot perform easily in SPECT study. But in our hospital, could provide to clinic doctor of scatter corrected images, through introduction of new generation gamma camera has function of simple scatter correction. Taking this opportunity, we will compare scatter corrected and non-scatter corrected image from image quality of point of view. Materials and Methods: We acquisite the ‘Hoffman brain phantom’ SPECT image and ‘1mm line phantom’ SPECT image, each 18 times, with GE Infinia Hawkeye 4, SPECT-CT gamma camera. At first, we calculated each contrast from axial slice of scatter corrected and non-scatter corrected SPECT image of ‘Hoffman brain phantom’. and next, calculated each FWHM of horizontal and vertical from axial slice of scatter corrected and non-scatter corrected SPECT image of ‘1mm line phantom’. After then, we attempted T test analysis with SAS program on data, contrast and resolution value of scatter corrected and non-scatter corrected image. Results: The contrast of scatter corrected image, elevated from 0.3979 to 0.3509. And the resolution of scatter corrected image, elevated from 3.4822 to 3.6375. p value were 0.0097 in contrast and <0.0001 in resolution. We knew the fact that do improve of contrast and resolution through scatter correction. Conclusion: We got the improved SPECT image through simple and easy way, scatter correct. We will expect to provide improved images, from contrast and resolution point of view. to our clinic doctor.

목차

서론

실험재료 및 방법

결과

결론

요약

REFERENCES

키워드

Scatter correction Contrast Resolution