재구성 방법(점 확산함수 적용 유무)에 따른 PET/MR 영상 평가

• 영문명: Comparison of PET/MR image quality with and without point spread function algorithm according to reconstruction type
• 발행기관: 대한핵의학기술학회
• 저자명: 박찬록(Chan Rok Park) 문일상(Il Sang Moon) 노경운(Gyeong Woon Noh)
• 간행물 정보: 『핵의학기술』Vol.22 No.1, 43~45쪽, 전체 3쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2018.05.30

영문 초록

Purpose In this study, we evaluated image by applying with and without point spread function algorithm(PSF) according to reconstruction type. Materials and Methods Biograph mMR (Siemens, Germany) was used as PET/MR scanner. For phantom study, we used NEMA IEC Body phantom maintaining radioactivity ratio (hotsphere:background = 8:1). To evaluate phantom image quality, percent contrast recovery and signal to noise ratio (SNR) were used by drawing ROI to 4 spheres. In clinical study, the 20 patients who underwent simultaneous PET/MR was selected and set the ROI at liver. we evaluated images as SNR. Results In the phantom results, The percent contrast recovery applying PSF algoritm was high 5 % compared to without PSF algoritm and SNR was also high 11 %. In the clinical study result, we confirmed that The SNR applying PSF algoritm was high 5 % compared to without PSF algoritm. Conclusion We need to simulate a lot of phantom study and clinical analysis to improve image quality for PET/MRI.

목차

서론

실험재료 및 방법

결과

결론 및 고찰

요약

REFERENCES

키워드

PET/MR NEMA IEC Body Phantom Point Spread Function Reconstruction