放出性シストウレトログラムにおける女性の尿道狭窄の判定のための観察者間および観察者内再現性:遡及的研究
Alea I Zone1, Caitlin E Carlton1, Mortadha Al-Kinani2
1Department of Urology, University of Texas Southwestern Medical Center, Dallas, USA.
Cureus
|February 16, 2026
まとめ
放射線科医は,女性における尿道狭窄の特定について,女性の空白シストウレトログラム (VCUG) において良好な合意を示した. この研究は,VCUGを支持しています.
科学分野:
- 泌尿器科 泌尿器科とは
- 放射線学 放射線学
- 女性 下尿路画像検査
背景:
- 排尿性シストウレトログラム (VCUG) は,女性の下部尿路の解剖を評価するために使用されるイメージング技術です.
- その使用は減少しているが,VCUGは,尿道病理学や再建性骨盤外科において,尿道病理学などの再発性尿路感染症 (RUTI) の構造的原因を特定するために貴重な存在であり続けている.
研究 の 目的:
- 泌尿管の口径とVCUGの狭窄を解釈する放射線科医の間で,観察者間および観察者内の変動性を評価する.
- ニューロゲン性でない女性における尿道狭窄の診断におけるVCUGの信頼性を評価する.
主な方法:
- 18歳から85歳までの女性から発生した83件のVCUG症例を遡及的にレビューし,有意な転倒はなかった.
- 4人のフェローシップで訓練された放射線科医は,尿道収縮,重症度,および位置を,直立サギタルの斜め投影画像で独立して評価しました.
- 読者間の信頼性は,シュロート・フライス統計 (クラス内相関係数,ICC) を用いて計算された.
主要な成果:
- 4人の放射線科医全員が,尿道狭窄の存在または欠如について60%の症例 (50/83) で同意した.
- 大多数の合意 (≥3の評価者) は90%のケース (75/83) で存在感の狭窄 (ICC = 0.79) のために達成されました.
- 縮小した症例では,重症度に関する過半数合意は70% (ICC = 0.89) であり,場所に関する合意は84% (ICC = 0.43) であった.
結論:
- この研究は,女性の立体VCUGでの尿道狭窄の特定のための良好なインターリーダー再現性を実証しています.
- 放射線科医の大多数は,尿道狭窄の存在,位置,および重症について同意した.
- 尿道狭窄の標準化された放射線学的定義を確立するために,臨床データとのさらなる相関が必要である.
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