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Author
Yoshimura, Yuuki Radiological Technology, Graduate School of Health Sciences, Okayama University
Kuroda, Masahiro Radiological Technology, Graduate School of Health Sciences, Okayama University
Sugiantoc, Irfan Department of Oral and Maxillofacial Radiology, Okayama University
Bamgbosec, Babatunde O. Department of Oral and Maxillofacial Radiology, Okayama University
Miyahara, Kanae Radiological Technology, Graduate School of Health Sciences, Okayama University
Ohmura, Yuichi Radiological Technology, Graduate School of Health Sciences, Okayama University
Kurozumi, Akira Radiological Technology, Graduate School of Health Sciences, Okayama University
Matsushita, Toshi Central Division of Radiology, Okayama University Hospital
Ohno, Seiichiro Central Division of Radiology, Okayama University Hospital
Kanazawa, Susumu Department of Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Asaumi, Junichi Department of Oral and Maxillofacial Radiology, Okayama University
Abstract
Readout-segmented echo-planar imaging (RESOLVE) is a multi-shot echo-planar imaging (EPI) modality with k-space segmented in the readout direction. We investigated whether RESOLVE decreases the distortion and artifact in the phase direction and increases the signal-to-noise ratio (SNR) in phantoms image taken with 3-tesla (3T) MRI versus conventional EPI. We used a physiological saline phantom and subtraction mapping and observed that RESOLVE’s SNR was higher than EPI’s. Using RESOLVE, the combination of a special-purpose coil and a large-loop coil had a higher SNR compared to using only a head/neck coil. RESOLVE’s image distortioas less than EPI’s. We used a 120 mM polyethylene glycol phantom to examine the phase direction artifact.vThe range where the artifact appeared in the apparent diffusion coefficient (ADC) image was shorter with RESOLVE compared to EPI. We used RESOLVE to take images of a Jurkat cell bio-phantom: the cell-region ADC was 856×10−6mm2/sec and the surrounding physiological saline-region ADC was 2,951×10−6mm2/sec. The combination of RESOLVE and the 3T clinical MRI device reduced image distortion and improved SNR and the identification of accurate ADC values due to the phase direction artifact reduction. This combination is useful for obtaining accurate ADC values of bio-phantoms.
Keywords
RESOLVE
bio-phantom
3 tesla MRI
apparent diffusion coefficient
diffusion-weighted imaging
Amo Type
Original Article
Published Date
2018-02
Publication Title
Acta Medica Okayama
Volume
volume72
Issue
issue1
Publisher
Okayama University Medical School
Start Page
53
End Page
59
ISSN
0386-300X
NCID
AA00508441
Content Type
Journal Article
language
英語
Copyright Holders
CopyrightⒸ 2018 by Okayama University Medical School
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publisher
Refereed
True
PubMed ID