基于风格迁移数字病理的结肠H&E图像数据驱动细胞核亚分类
Data-driven Nucleus Subclassification on Colon H&E using Style-transferred Digital Pathology
AI总结:
针对H&E染色难以标注细胞亚类的问题,本研究结合MxIF标注与风格迁移生成带标签的虚拟H&E图像,训练监督学习模型,首次实现H&E图像上辅助性T细胞和上皮祖细胞的细胞核分类。
摘要:
理解细胞的通讯、共定位及相互关联方式对深化我们对机体功能的认知至关重要。H&E染色应用十分广泛,但细胞亚型分型通常需要专业知识以及特殊染色技术的辅助。为减轻标注负担,已有研究提出用AI对H&E图像中的细胞进行分类,例如近期的结肠细胞核识别与分类挑战赛(Colon Nucleus Identification and Classification, CoNIC)便聚焦于结肠H&E图像上6种细胞类型的标注。然而CoNIC挑战赛无法对上皮细胞亚型(祖细胞、肠内分泌细胞、杯状细胞)、淋巴细胞亚型(B细胞、辅助性T细胞、细胞毒性T细胞)以及结缔组织亚型(成纤维细胞)进行分类。\n我们采用跨模态学习方法,对H&E图像上此前无法标注的细胞类型进行标注。我们利用多重免疫荧光(multiplexed immunofluorescence, MxIF)组织学技术标注了14种细胞亚类。我们对相同的MxIF组织样本执行风格迁移,合成出逼真的虚拟H&E图像,并将其与源自MxIF的细胞亚分类标签配对。我们评估了一种监督学习方案的效果:该方案的输入为高逼真度虚拟H&E图像,标签为源自MxIF的细胞亚类。我们分别在私有虚拟H&E数据集和公开真实H&E数据集上评估了模型性能。\n在使用真实质心信息的情况下,模型在虚拟H&E图像上对辅助性T细胞和上皮祖细胞的阳性预测值分别为$0.34 \pm 0.15$(流行度$0.03 \pm 0.01$)和$0.47 \pm 0.1$(流行度$0.07 \pm 0.02$);在真实H&E图像上,二者的阳性预测值上限分别为$0.43 \pm 0.03$(父类流行度0.21)和$0.94 \pm 0.02$(父类流行度0.49)。本研究是首个实现H&E图像上辅助性T细胞与上皮祖细胞核分类的工作。
英文摘要:
Understanding the way cells communicate, co-locate, and interrelate is essential to furthering our understanding of how the body functions. H&E is widely available, however, cell subtyping often requires expert knowledge and the use of specialized stains. To reduce the annotation burden, AI has been proposed for the classification of cells on H&E. For example, the recent Colon Nucleus Identification and Classification (CoNIC) Challenge focused on labeling 6 cell types on H&E of the colon. However, the CoNIC Challenge was unable to classify epithelial subtypes (progenitor, enteroendocrine, goblet), lymphocyte subtypes (B, helper T, cytotoxic T), and connective subtypes (fibroblasts). We use inter-modality learning to label previously un-labelable cell types on H&E. We take advantage of multiplexed immunofluorescence (MxIF) histology to label 14 cell subclasses. We performed style transfer on the same MxIF tissues to synthesize realistic virtual H&E which we paired with the MxIF-derived cell subclassification labels. We evaluated the efficacy of using a supervised learning scheme where the input was realistic-quality virtual H&E and the labels were MxIF-derived cell subclasses. We assessed our model on private virtual H&E and public real H&E. On virtual H&E, we were able to classify helper T cells and epithelial progenitors with positive predictive values of $0.34 \pm 0.15$ (prevalence $0.03 \pm 0.01$) and $0.47 \pm 0.1$ (prevalence $0.07 \pm 0.02$) respectively, when using ground truth centroid information. On real H&E we could classify helper T cells and epithelial progenitors with upper bound positive predictive values of $0.43 \pm 0.03$ (parent class prevalence 0.21) and $0.94 \pm 0.02$ (parent class prevalence 0.49) when using ground truth centroid information. This is the first work to provide cell type classification for helper T and epithelial progenitor nuclei on H&E.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。