대한의용생체공학회:학술대회논문집 (Proceedings of the KOSOMBE Conference)
- 대한의용생체공학회 1990년도 추계학술대회
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- Pages.19-23
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- 1990
MR Gradient Echo 영상술에서 자화율에 의한 에러의 감소에 관한 연구
Reduction of Susceptibility Artifact in MR Gradient Echo Imaging
초록
A new technique for reducing the susceptibility artifact in gradient echo imaging which uses a tailored RF pulse is proposed. It is applied to the case of imaging where artifacts and distortions arise due to the high local magnetic field inhomogeneity i. e., the susceptibility. The signal loss and void phenomena due to susceptibility in a voxel are studied and a correction method using a tailored RF pulse is proposed. Applications of this method in imaging are given and experimental results obtained using an human volunteer with a 2.0 T KAIS NMR system are presented.
키워드