PMID: 16528207Mar 11, 2006Paper

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

Journal of Neuroradiology. Journal De Neuroradiologie
H TeradaE Kohda

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.

References

Jan 28, 1998·Stroke; a Journal of Cerebral Circulation·M B SingerS W Atlas
Jul 2, 1998·AJR. American Journal of Roentgenology·S E MaierF A Jolesz
Feb 13, 2001·Journal of Magnetic Resonance Imaging : JMRI·Y MamataS E Maier
Aug 12, 2005·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Naoto HayashiTetsuhiko Takahashi

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Citations

Nov 20, 2008·Clinical & Experimental Ophthalmology·Andrew G LeeWendy R K Smoker
Aug 23, 2020·Journal of Magnetic Resonance Imaging : JMRI·Seema S BhatSairam Geethanath
Jun 28, 2020·British Journal of Neurosurgery·Akihide KondoHajime Arai

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