심근관류 SPECT에서 움직임 보정 방법들의 비교

• 영문명: The Comparison of Motion Correction Methods in Myocardial Perfusion SPECT
• 발행기관: 대한핵의학기술학회
• 저자명: 박장원(Jang-Won Park) 남기표(Ki-Pyo Nam) 이동훈(Hoon-Dong Lee) 김성환(Sung-Hwan Kim)
• 간행물 정보: 『핵의학기술』Vol.18 No.2, 28~32쪽, 전체 5쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2014.11.30

영문 초록

Purpose Patient motion during myocardial perfusion SPECT can produce images that show visual artifacts and perfusion defects. This artifacts and defects remain a significant source of unsatisfactory myocardial perfusion SPECT. Motion correction has been developed as a way to correct and detect the patient motion for reducing artifacts and defects, and each motion correction uses different algorithm. We corrected simulated motion patterns with several motion correction methods and compared those images. Materials and Methods Phantom study was performed. The anthropomorphic torso phantom was made with equal counts from patient’s body and simulated defect was added in myocardium phantom for to observe the change in defect. Vertical motion was intentionally generated by moving phantom downward in a returning pattern and in a non-returning pattern throughout the acquisition. In addition, Lateral motion was generated by moving phantom upward in a returning pattern and in a non-returning pattern. The simulated motion patterns were detected and corrected similarly to no-motion pattern image and QPS score, after Motion Detection and Correction Method (MDC), stasis, Hopkins method were applied. Results In phantom study, Changes of perfusion defect were shown in the anterior wall by the simulated phantom motions, and inferior wall's defect was found in some situations. The changes derived from motion were corrected by motion correction methods, but Hopkins and Stasis method showed visual artifact, and this visual artifact did not affect to perfusion score. Conclusion It was confirmed that motion correction method is possible to reduce the motion artifact and artifactual perfusion defect, through the apply on the phantom tests. Motion Detection and Correction Method (MDC) performed better than other method with polar map image and perfusion score result.

목차

서론

대상 및 방법

영상획득 및 재구성

비교분석

결과

고찰

결론

요약

REFERENCES

키워드

Thallium-201 Motion correction Myocardial perfusion SPECT