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arXiv 1801.02101cs.CV
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提高脑肿瘤共聚焦激光显微内镜的实用性:客观价值评估和卷积神经网络诊断框架检测

Improving utility of brain tumor confocal laser endomicroscopy: objective value assessment and diagnostic frame detection with convolutional neural networks

Arizona State University(亚利桑那州立大学);Irkutsk State Medical University(伊尔库茨克国立医科大学)

Mohammadhassan Izadyyazdanabadi, Evgenii Belykh, Nikolay Martirosyan, Jennifer Eschbacher, Peter Nakaji, Yezhou Yang, Mark C. Preul

摘要:

共聚焦激光显微内镜(CLE)虽然能够在脑肿瘤手术期间实时的获得细胞分辨率的图像,但会产生与诊断图像一样多的非诊断图像。由于探头和大脑或血液伪影之间的相对运动,无用图像通常会失真。然而,许多图像只是缺乏能够立即为医生提供信息的诊断特征。检查来自单个病例的所有数百或数千张图像以区分诊断图像和非诊断图像可能是乏味的。提供图像的实时诊断价值评估(足够快以在手术采集过程期间使用并且足够准确以供病理学家依赖)以自动检测诊断帧将简化图像的分析并且为病理学家/外科医生过滤有用的图像。我们试图将图像自动分类为诊断或非诊断。AlexNet是一种深度学习架构,以4重交叉验证的方式使用。我们的数据集包括来自74名CLE辅助脑肿瘤手术患者的16,795张图像(8572张非诊断图像和8223张诊断图像)。所有图像的基础事实由病理学家提供。测试数据的平均模型准确度总体为91%(准确度90.79%,灵敏度90.94%,特异性90.87%)。为了评估模型的可靠性,我们还进行了受试者工作特征(ROC)分析,ROC曲线下面积(AUC)的平均值为0.958。这些结果表明,经过深度训练的AlexNet网络可以实现可靠、快速识别诊断CLE图像的模型。

英文摘要:

Confocal laser endomicroscopy (CLE), although capable of obtaining images at cellular resolution during surgery of brain tumors in real time, creates as many non-diagnostic as diagnostic images. Non-useful images are often distorted due to relative motion between probe and brain or blood artifacts. Many images, however, simply lack diagnostic features immediately informative to the physician. Examining all the hundreds or thousands of images from a single case to discriminate diagnostic images from nondiagnostic ones can be tedious. Providing a real-time diagnostic value assessment of images (fast enough to be used during the surgical acquisition process and accurate enough for the pathologist to rely on) to automatically detect diagnostic frames would streamline the analysis of images and filter useful images for the pathologist/surgeon. We sought to automatically classify images as diagnostic or non-diagnostic. AlexNet, a deep-learning architecture, was used in a 4-fold cross validation manner. Our dataset includes 16,795 images (8572 nondiagnostic and 8223 diagnostic) from 74 CLE-aided brain tumor surgery patients. The ground truth for all the images is provided by the pathologist. Average model accuracy on test data was 91% overall (90.79 % accuracy, 90.94 % sensitivity and 90.87 % specificity). To evaluate the model reliability we also performed receiver operating characteristic (ROC) analysis yielding 0.958 average for the area under ROC curve (AUC). These results demonstrate that a deeply trained AlexNet network can achieve a model that reliably and quickly recognizes diagnostic CLE images.

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。

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