JaLCDOI 10.18926/AMO/55663
フルテキストURL 72_1_53.pdf
著者 Yoshimura, Yuuki| Kuroda, Masahiro| Sugiantoc, Irfan| Bamgbosec, Babatunde O.| Miyahara, Kanae| Ohmura, Yuichi| Kurozumi, Akira| Matsushita, Toshi| Ohno, Seiichiro| Kanazawa, Susumu| Asaumi, Junichi|
抄録 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.
キーワード RESOLVE bio-phantom 3 tesla MRI apparent diffusion coefficient diffusion-weighted imaging
Amo Type Original Article
発行日 2018-02
出版物タイトル Acta Medica Okayama
72巻
1号
出版者 Okayama University Medical School
開始ページ 53
終了ページ 59
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2018 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 29463939