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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한자기공명의과학회 Investigative Magnetic Resonance Imaging Investigative Magnetic Resonance Imaging 제25권 제3호
- 발행연도
- 2021.9
- 수록면
- 164 - 171 (8page)
이용수
초록· 키워드
오류제보하기
Purpose: To develop a 3D magnetic resonance fingerprinting (MRF) method for application in high resolution knee cartilage PD, T1, T2 mapping.
Materials and Methods: A novel 3D acquisition trajectory with golden-angle rotating radial in kxy direction and interleaved echo planar imaging (EPI) acquisition in the kz direction was implemented in the MRF framework. A centric order was applied to the interleaved EPI acquisition to reduce Nyquist ghosting artifact due to field inhomogeneity. For the reconstruction, singular value decomposition (SVD) compression method was used to accelerate reconstruction time and conjugate gradient sensitivity-encoding (CG-SENSE) was performed to overcome low SNR of the high resolution data. Phantom experiments were performed to verify the proposed method. In vivo experiments were performed on 6 healthy volunteers and 2 early osteoarthritis (OA) patients.
Results: In the phantom experiments, the T1 and T2 values of the proposed method were in good agreement with the spin-echo references. The results from the in vivo scans showed high quality proton density (PD), T1, T2 map with EPI echo train length (NETL = 4), acceleration factor in through plane (Rz = 5), and number of radial spokes (Nspk = 4). In patients, high T2 values (50-60 ms) were seen in all transverse, sagittal, and coronal views and the damaged cartilage regions were in agreement with the hyper-intensity regions shown on conventional turbo spin-echo (TSE) images.
Conclusion: The proposed 3D MRF method can acquire high resolution (0.5 mm3 ) quantitative maps in practical scan time (~ 7 min and 10 sec) with full coverage of the knee (FOV: 160 × 160 × 120 mm3 ).
목차
등록된 정보가 없습니다.
참고문헌 (53)
참고문헌 신청
Ma D / 2013 / Magnetic resonance fingerprinting / Nature 495:187~192
Jiang Y / 2015 / MR fingerprinting using fast imaging with steady state precession(FISP)with spiral readout / Magn Reson Med 74:1621~1631
Jiang Y / 2017 / MR fingerprinting using the quick echo splitting NMR imaging technique / Magn Reson Med 77:979~988
McGivney DF / 2014 / SVD compression for magnetic resonance fingerprinting in the time domain / IEEE Trans Med Imaging 33:2311~2322
Pierre EY / 2016 / Multiscale reconstruction for MR fingerprinting / Magn Reson Med 75:2481~2492
Jiang Y / 2015 / MR fingerprinting using fast imaging with steady state precession(FISP)with spiral readout / Magn Reson Med 74:1621~1631
Jiang Y / 2017 / MR fingerprinting using the quick echo splitting NMR imaging technique / Magn Reson Med 77:979~988
McGivney DF / 2014 / SVD compression for magnetic resonance fingerprinting in the time domain / IEEE Trans Med Imaging 33:2311~2322
Pierre EY / 2016 / Multiscale reconstruction for MR fingerprinting / Magn Reson Med 75:2481~2492
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