计算机断层扫描3D重建和纹理分析,用于评估新辅助化疗在晚期胃癌中疗效
Chun-Ye Wang1, Lei Zhang1, Jing-Wei Ma2
1Department of Imaging, Yantaishan Hospital, Yantai 264003, Shandong Province, China.
World journal of gastrointestinal surgery
|June 30, 2025
概括
计算机断层扫描 (CT) 3D重建体积变化率是评估新辅助化疗在胃癌 (GC) 疗效的首选定量指标. 将其与CT视觉特征相结合,可以提高预测准确度,从而改善患者的治疗结果.
科学领域:
- 在瘤学瘤学.
- 放射学 放射学是一门学科.
- 医疗成像医学成像
背景情况:
- 胃癌 (GC) 对全球健康造成重大负担,需要改善治疗疗效评估.
- 新辅助化疗对晚期GC至关重要,但预测个体治疗反应仍然具有挑战性.
- 先进的成像技术,如CT 3D重建和纹理分析,为精确的治疗反应评估提供了潜力.
研究的目的:
- 评估CT 3D重建体积变化速率,纹理特征和视觉特征在评估高级GC的新辅助化疗疗效能的实用性.
- 为了将成像学衍生的指标与术后病理性瘤回归等级 (TRG) 相关联,以验证治疗反应.
主要方法:
- 对97名接受新辅助化疗 (S-1加奥克沙利) 的晚期GC患者的回顾性分析.
- 使用MaZda软件进行CT纹理分析;用ITK-snap软件测量瘤体积变化率.
- 图像指标 (体积变化率,纹理,视觉特征) 和TRG之间的相关性分析;预测模型的构建和验证.
主要成果:
- 静脉阶段CT纹理分析显示错误分类率较低 (7.85%) 比动脉阶段 (13.92%).
- 有效的化疗组表现出明显更高的体积变化率 (75.20%) 与无效组 (41.75%).
- 体积变化率与TRG有很强的相关性 (r = -0.886,P < 0.001);与CT视觉特征 (AUC = 0.795) 相比,显示出更高的预测值 (AUC = 0.885).
结论:
- CT 3D重建体积变化率是评估GC中新辅助化疗疗效能的首选定量指标.
- 将CT体积变化速率与CT视觉特征集成,可以提高治疗反应评估的准确性.
- 这种方法有望优化晚期胃癌的个性化治疗策略.
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