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Development of diffusion-weighted image using a 0.3T open MRI.

H Terada·T Gomi·H Harada·T Chiba·T Nakamura·S Iwabuchi·H Nemoto·S Kawasaki·S Watanabe·M Nagamoto·Y Kawawa·E Kohda
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Abstract

The purpose of this study was to develop a new technique for diffusion-weighted MRI (DWI) with a low-field scanner. DWI is becoming important for assessment of acute stroke. Until recently DWI required expensive technology. We developed multishot-DWI sequence for 0.3T open type MR imager. We prospectively studied forty patients on this 0.3T MRI and compared this DWI to single-shot-DWI by 1.5T-MRI. Group A: Twenty-four patients with acute cerebral infarctions detected by 1.5T-DWI were re-examined using 0.3T-DWI within 24 hours. Sixteen patients with acute cerebral infarctions detected by 0.3T-DWI were re-examined using 1.5T-DWI within 24 hours. In 22 (92%) of 24 cases, 0.3T-DWI showed high signal. In the other two patients, motion artifact distorted 0.3T-DWI. Group B: In all 16 patients, all infarctions detected by 0.3T-DWI showed high signal on 1.5T-DWI. These preliminary data show that, as long as the patient is able to keep still, multishot-DWI can be acquired successfully on a 0.3T open type MRI system.

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AgedAged, 80 and overCerebral InfarctionDiffusion Magnetic Resonance ImagingEcho-Planar ImagingFemaleHumansMaleMiddle AgedSensitivity and SpecificityJournal ArticleRandomized Controlled Trial

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H Terada, T Gomi, H Harada, T Chiba, T Nakamura, S Iwabuchi, H Nemoto, S Kawasaki, S Watanabe, M Nagamoto, Y Kawawa, E Kohda. 2006. Development of diffusion-weighted image using a 0.3T open MRI.. https://doi.org/10.1016/s0150-9861(06)77229-7

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