書誌事項
- タイトル別名
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- Expansion of Sensitivity Area for Magnetic Resonance Imaging of the Hand Using Parallel-array Coil
- 臨床技術 対向アレイコイルによる手部MRIの感度領域の拡張
- リンショウ ギジュツ タイコウ アレイコイル ニ ヨル シュブ MRI ノ カンド リョウイキ ノ カクチョウ
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It is difficult for Rheumatoid Arthritis (RA) patients to remain in a strenuous position for a long time during examinations. The field of view (FOV): 250 mm is needed for hand examinations from the wrist to the finger. Two channel phased array coils are effective to use when examinations of the ‘off center’ are taken for the upper and lower extremities. The area of the array coils’ sensitivity can be expanded by shifting both coil elements 40–60% in the opposite direction of the element’s diameter. This method is given credibility due to the increased signal-to-noise ratio (SNR) in the peripheral regions (shifted directions), but loses value in the central area, as indicated by the decrease in SNR. This was confirmed in the image of the hand using visual assessment including the fat suppression technique. It was verified that the sensitivity area was expanded using Scheffe’s method of paired comparison (Ura’s modified method). An application at the other regions of the body can be expected to be used in the case of using parallel positioned coils during clinical situation.
収録刊行物
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- 日本放射線技術学会雑誌
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日本放射線技術学会雑誌 68 (10), 1346-1353, 2012
公益社団法人 日本放射線技術学会
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詳細情報 詳細情報について
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- CRID
- 1390001206362356352
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- NII論文ID
- 10031082190
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- NII書誌ID
- AN00197784
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- COI
- 1:STN:280:DC%2BC3s%2FntlSgsQ%3D%3D
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 024064667
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- PubMed
- 23089837
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可