二重キャピラリー管を用いたMRイメージングの空間分解能評価

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2014/02/01

タイトル(英語): Evaluation of the Spatial Resolution of the MR Imaging using Double Capillary Tubes

著者名: 中野　洋（（独）産業技術総合研究所　関西産学官連携センター），谷垣　宣孝（（独）産業技術総合研究所　ユビキタスエネルギー研究部門）

著者名(英語): Hiroshi Nakano (Kansai Collaboration Center, National Institute of Advanced Industrial Science and Technology), Nobutaka Tanigaki (Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology)

キーワード: MRI，空間分解能，画像処理　　MRI，spatial resolution，image processing

要約(英語): There is increasing need for magnetic resonance microimaging (MRMI) measurements of tissues and cells of organisms to be nondestructive and accurate. However, no objective method is yet available for evaluating the spatial resolution of MRMI. Therefore, this study attempted a simple evaluation of spatial resolution of MRMI captured by 3T MRI of clinical equipment. In this evaluation, a phantom was inserted into an NMR tube (outer diameter 10mm) filled with copper sulfate solution. The phantom is a double structure comprising a thin capillary tube inserted in a thick capillary tube. The outer diameter of the capillary tube was measured using a micrometer. Images of the capillary tubes were captured using image-processing clinical 3T MRI equipment. From the captured image, the outer diameter of the inner capillary tube and the inside diameter of the outer capillary tube were determined. The outer diameter of the outer capillary determined from the image was nearly consistent with that measured using the micrometer; therefore, the capillary tube method was confirmed as being reasonably accurate. Further, the MR image captured by the clinical 3T MRI equipment was found to have a spatial resolution of about 20-40μm.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.134 No.2 （2014） 特集：知覚情報技術の最前線

本誌掲載ページ: 267-270 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/134/2/134_267/_article/-char/ja/