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Optimization of diffusion-tensor MR imaging data acquisition parameters for brain fiber tracking using parallel imaging at 3 T.

作者信息

Naganawa Shinji, Koshikawa Tokiko, Kawai Hisashi, Fukatsu Hiroshi, Ishigaki Takeo, Maruyama Katsuya, Takizawa Osamu

机构信息

Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai-cho, Shouwa-ku, 466-8550 Nagoya, Japan.

出版信息

Eur Radiol. 2004 Feb;14(2):234-8. doi: 10.1007/s00330-003-2163-6. Epub 2003 Nov 19.

DOI:10.1007/s00330-003-2163-6
PMID:14625784
Abstract

The purpose of this study was to optimize the parameters of diffusion-tensor magnetic resonance imaging (DT MRI) for brain fiber tracking using a slice thickness of 2 mm, a resolution advantage allowed by the high signal-to-noise ratio at 3 T, combined with an 8-channel phased-array head coil. The b-factor, number of motion probing gradient (MPG) directions, and number of averages were varied, and the results of brain fiber tracking for the pyramidal tract and trigeminal nerve were compared qualitatively and quantitatively. The DT MRI data sufficient for brain fiber tracking in healthy subjects can be obtained in <2 min with a 2-mm slice thickness, 700-s/mm2 b-factor, 6 MPG directions, and no averaging (number of averages=1).

摘要

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Brain fiber tracking with clinically feasible diffusion-tensor MR imaging: initial experience.利用临床可行的扩散张量磁共振成像进行脑纤维追踪：初步经验。
人脑干体感系统的扩散张量纤维束成像：3.0T高各向同性空间分辨率下的初步研究结果
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