新方法让癌症生存预测更精准|亚洲午夜精品久久久久久浪潮

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  中新网合肥11月14日电 (记者 吴兰)记者14日从中国科学技术大学获悉,该校苏州高等研究院、生物医学工程学院周少华教授团队,提出更精准且可解释的多模态癌症生存分析新方法,让癌症生存预测更精准。

  据介绍,这一突破性进展缩小了病理图像与基因表达数据的“语义鸿沟”,让癌症生存预测更精准且可解释,不仅能让更多癌症患者从精准治疗中获益,还可以避免过度治疗,助力医疗资源最优配置,为精准肿瘤诊治铺平道路。研究成果近日发表于《IEEE模式分析与机器智能汇刊》。

  癌症生存分析是精准医学的关键环节,它能帮助医生制定个性化治疗方案,但传统分析方法一直面临“病理图像和基因表达之间细粒度交互不足”的难题。

  为解决这一问题,研究团队开发出全新的“通路感知多模态Transformer(PAMT)框架”,通过三步实现多模态数据的细粒度交互和融合。

  第一步,先让单模态数据内部“信息交流”,利用自注意力机制让生物通路间、病理图像块间充分传递信息;第二步,通过全新的无配对标签对比学习方法,让生物通路和病理图像块的语义信息对齐,确保两者“说同一种语言”;第三步,遵循“基因型决定表型”的医学先验,以生物通路为指导,实现两种数据的精准融合,真正捕捉到癌症发展的核心关联。

  研究发现,PAMT不仅预测效果突出,在膀胱癌、肺鳞癌、肺腺癌三种癌症数据集上,其生存预测性能均显著超过现有主流方法,并且展现出了优秀的“可解释性”。PAMT能够协助病理医生快速筛选影响生存的关键生物通路、定位全切片病理图像中受通路影响的区域,并挖掘与预后相关的病理图像特征。据悉,团队已搭建公开网站,可视化展示186条生物通路对全切片病理图像各区域的影响。(完)

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