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Application of Brain Diffusion-Weighted Imaging Performed Using Readout Segmentation of Long Variable Echo Trains Go ISHIDA 1 , Makoto OISHI 2 , Ken MORII 1 , Kenji HASEGAWA 1 , Akihiko SAITO 1 , Mitsuya SATO 1 , Osamu TAKIZAWA 4 , Katsutoshi MURATA 4 , PORTER DA 5 , Hitoshi MATSUZAWA 3 , Yukihiko FUJII 2,3 1Shinjinkai, Kitanihon Noshinkeigeka Hospital 2Department of Neurosurgery, Brain Research Institute, Niigata University 3Center for Integrated Human Brain Science, Brain Research Institute, Niigata University 4Siemens Japan K.K. 5Siemens AG, Healthcare Sector, Erlangen Keyword: RESOLVE , MRI , EPI , DWI , distortion pp.31-40
Published Date 2015/1/10
DOI https://doi.org/10.11477/mf.1436202942
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 We report the preliminary use of the readout segmentation of long variable echo trains(RESOLVE)sequence, a novel magnetic resonance(MR)scanning technique based on a readout segmented echo planar imaging(EPI)strategy. RESOLVE enables high-resolution diffusion-weighted imaging(DWI)by minimizing susceptibility distortions and T2 blurring. The software for this sequence was provided by Siemens AG, Germany. Previously, we determined appropriate sequence parameters to obtain sufficiently high-resolution images through phantom studies. Then, we applied the sequence to some clinical cases with neurological disorders and analyzed the RESOLVE-DWI data with diffusion tensor imaging(DTI)techniques. In this article, we report clinical application of the RESOLVE sequence in two cases, one with cerebellar infarction and one with an intracranial epidermoid cyst. In both cases, RESOLVE-DWI clearly exposed structures that were obscured or severely distorted by artifacts on usual single-shot EPI-DWI. DTI analyses for RESOLVE-DWI data provided detailed information about fiber tracts and cranial nerves.


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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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