磁気共鳴画像は,良性腫瘍と悪性腫瘍を区別し,APTとDWIツールを使用してKi-67発現を評価します
Xinxin Liu1, Pengxiang Li1, Pan Shang1
1MRI Department, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China.
Frontiers in oncology
|February 18, 2026
まとめ
アミド陽子伝達 (APT) MRIは,良性腫瘍と悪性腫瘍の区別において高い精度を示しています. APTはまた,Ki-67発現と相関し,腫瘍増殖のための非侵襲的マーカーとして機能します.
科学分野:
- 放射線学とイメージング
- 腫瘍学 腫瘍学
- バイオメディカルエンジニアリング
背景:
- 従来のMRIは,特異性が低いため,良性および悪性骨の病変の区別に限界があります.
- アミド陽子伝達 (APT) MRIは,タンパク質とペプチド内のアミド陽子を検出する新興技術です.
- 骨および軟組織腫瘍の定性診断におけるAPTの適用に関する研究は限られている.
研究 の 目的:
- APTと拡散加重画像 (DWI) の有効性を評価し,良性腫瘍と悪性腫瘍の区別を図る.
- APT,DWIパラメータ (ADC,EADC) と腫瘍におけるKi-67発現の相関を評価する.
- 腫瘍の特徴化におけるAPTとDWIの診断性能を決定する.
主な方法:
- 骨または軟組織腫瘍を有する49人の患者がMRIスキャンを受けた.
- APT,表面拡散係数 (ADC),指数的表面拡散係数 (EADC) の値が測定されました.
- イメージングパラメータとKi-67発現の間の相関分析が行われました.
- 受信機動作特性 (ROC) 曲線解析は,診断効率を評価した.
主要な成果:
- 良性腫瘍と悪性腫瘍の間でAPT,ADC,EADC値の有意な差異が見つかりました (P < .001,P = .0032,P = .019).
- APTはKi-67発現と正の相関を示した (r = 0.546,P = .002).
- APTは,3.6%のカットオフで72.41%の感度と95%の特異性を腫瘍のタイプを区別する上で達成しました.
結論:
- MR APT配列は,良性および悪性骨および軟組織腫瘍を区別するための高い診断効率を示しています.
- APT,ADC,EADCを組み合わせることで,診断特異性を高めることができます.
- APTは,Ki-67発現と相関する腫瘍増殖活動を評価するための非侵襲的イメージングマーカーとして機能します.
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