足と足首の重要な関節における正常関節スペースの幅を,客観的な重量を持つCT Hounsfieldユニットアルゴリズムを使用して定義する
Hannah J Zeller1, Donald D Anderson2, Tutku Tazegul1
1Departments of Orthopedics and Rehabilitation, The University of Iowa, 200 Hawkins Dr, Iowa City, IA 52242, United States.
まとめ
この研究では,重量ベアリングCT (WBCT) を使用して,4つの足と足首の関節の正常関節空間幅 (JSW) とHounsfield単位 (HU) の強度プロフィールを確立しました. これらの客観的な測定は,将来の骨格関節炎の分類システムのためのベースラインを提供します.
科学分野:
- 整形外科 整形外科 整形外科
- 放射線学 放射線学
- バイオメディカルエンジニアリング
背景:
- 足と足首の関節 (小足関節,小足関節,タロナビキュラー,第1メタタソファランゲル) の骨関節炎 (OA) の評価は,主観的な分類に依存しています.
- 現在の方法には信頼性と再現性が欠けており,OAの進行を正確にモニタリングすることを妨げています.
研究 の 目的:
- 4つの主要な足と足首の関節における正常な関節の特徴と関節空間幅 (JSW) を定義する.
- 健康な被験者における負荷CT (WBCT) の強度プロフィールの客観的な分析を活用する.
主な方法:
- 20人の健康な被験者 (40フィート) の横断的な研究で,OAまたは足の変形の証拠はありません.
- WBCTの強度を測定するために5つの並列の空間投影を使用して分析されたWBCTスキャン.
- ハーンズフィールド単位 (HU) の強度におけるジョイントスペース幅 (JSW) とミケルソンコントラストを定量化した.
主要な成果:
- 健康なチビオタラ,サブタラ,タロナビキュラ,第1次メタタソファランジアル関節の平均JSWはそれぞれ3.97,4.20,3.33および3.87mmでした.
- 平均的なミケルソンコントラスト値は,それぞれ71.8,92.5,84.1,101.4でした.
結論:
- WBCTの強度プロファイルの新しい3D分析が採用されました.
- 正常な足と足首の関節に対するJSWとHUの強度値を客観的に確立した.
- 客観的な骨格関節炎の格付けシステムを開発するための基礎を提供します.
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