[논문]Diffusion tensor imaging using partial Fourier STEAM MRI with projection onto convex subsets reconstruction

Rieseberg, Susanne; Merboldt, Klaus-Dietmar; Kü; ntzel, Matthias; Frahm, Jens

doi:10.1002/mrm.20572

Diffusion tensor imaging using partial Fourier STEAM MRI with projection onto convex subsets reconstruction 원문보기

Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine, v.54 no.2, 2005년, pp.486 - 490

Rieseberg, Susanne (Biomedizinische NMR Forschungs GmbH am Max-Planck-Institut fü) , Merboldt, Klaus-Dietmar (r biophysikalische Chemie, Gö) , Küntzel, Matthias (ttingen, Germany) , Frahm, Jens (Biomedizinische NMR Forschungs GmbH am Max-Planck-Institut fü)

Abstract ▼ AI-Helper

Diffusion-weighted single-shot STEAM MRI allows for diffusion mapping of the human brain without sensitivity to resonance offset effects. In order to compensate for its inherently lower SNR and speed than echo-planar imaging, this work describes the use of partial Fourier encoding in combination with image reconstruction by the projection onto convex subsets algorithm. The method overcomes phase distortions in diffusion-weighted partial Fourier acquisitions that disturb the conjugate complex symmetry of k-space and preclude the use of respective reconstruction techniques. In comparison with full Fourier encoding and a static flip angle for the STEAM readout pulses, experimental results at 2.9 T demonstrate a gain in relative SNR per unit time by 20% for 5/8 phase encoding with optimized variable flip angles. Simultaneously, the imaging time is reduced from about 670 ms (80 echoes) to 440 ms (50 echoes). Current implementations at 2 × 2 mm2 in-plane resolution comprise a protocol for clinical anisotropy studies (12 diffusion-encoding gradient directions at 1000 s mm−2) covering 18 sections of 4-mm thickness within a measurement time of 8.5 min (5 averages) and a version optimized for fiber tracking using 24 gradient directions and 38 sections of 2-mm thickness yielding a measurement time of 29.5 min (4 averages). Magn Reson Med 54:486–490, 2005. © 2005 Wiley-Liss, Inc.

주제어

참고문헌 (10)

10.1002/1522-2594(200011)44:5<731::AID-MRM11>3.0.CO;2-1

상세보기
Finsterbusch, Jürgen, Frahm, Jens. Half-Fourier single-shot STEAM MRI. Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine, vol.47, no.3, 611-615.

상세보기
RiesebergS.Kartierung des Diffusionstensors mittels schneller NMR‐Tomografie. Axonale Konnektivität im menschlichen Gehirn. Thesis Georg‐August‐Universität Göttingen: Cuvillier‐Verlag;2004.
10.1016/0730-725X(87)90402-4 CuppenJJ van EstA.Reducing MR imaging time by one‐sided reconstruction. Topical Conference on Fast MRI Techniques 1987 Cleveland.

상세보기
Rev Magn Reson Med Liang ZP 67 4 1992 Constrained reconstruction methods in MR imaging
Frahm, J, Haase, A, Matthaei, D, Merboldt, K.-D, Hänicke, W. Rapid NMR imaging using stimulated echoes. Journal of magnetic resonance, vol.65, no.1, 130-135.

상세보기
Hasan, Khader M., Parker, Dennis L., Alexander, Andrew L.. Comparison of gradient encoding schemes for diffusion-tensor MRI. Journal of magnetic resonance imaging : JMRI, vol.13, no.5, 769-780.

상세보기
Batchelor, P.G., Atkinson, D., Hill, D.L.G., Calamante, F., Connelly, A.. Anisotropic noise propagation in diffusion tensor MRI sampling schemes. Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine, vol.49, no.6, 1143-1151.

상세보기
FinsterbuschJ KochMA.(Almost) free lunch: Single‐shot STEAM MRI with GRAPPA. In: Proceedings of the11th Annual Meeting of ISMRM Toronto Canada 2003. p1012.
FinsterbuschJ KochMA.Single‐shot STEAM MRI combined with SENSE. In: Proceedings of the 12th Annual Meeting of ISMRM Kyoto Japan 2004. p2251.

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관 관리번호, 논문명, 대등논문명, 저자 , 저널/프로시딩명, 발행기관, 발행년, 발행언어, 권, 호, 시작페이지, 끝페이지, ISBN, ISSN, 주제분야, 키워드, 초록(한글), 초록(영문), 저자(소속기관)
저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Diffusion tensor imaging using partial Fourier STEAM MRI with projection onto convex subsets reconstruction 원문보기

Abstract ▼ AI-Helper

주제어

참고문헌 (10)

이 논문을 인용한 문헌

관련 콘텐츠

원문 보기

원문 URL 링크

오픈액세스(OA) 유형

이 논문과 함께 이용한 콘텐츠

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트