CT Lymph Nodes

This collection consists of Computed Tomography (CT) images of the mediastinum and abdomen in which lymph node positions are marked by radiologists at the National Institutes of Health, Clinical Center. Radiologists at the Imaging Biomarkers and Computer-Aided Diagnosis Laboratory labeled a total of 388 mediastinal lymph nodes in CT images of 90 patients and a total of 595 abdominal lymph nodes in 86 patients. The collection is aimed at the medical image computing community for developing and assessing computer-aided detection methods. Automated detection of lymph nodes can be an important clinical diagnostic tool but is very challenging due to the low contrast of surrounding structures in CT and to their varying sizes, poses, shapes and sparsely distributed locations. This data set is made available to make direct comparison to other detection methods in order to advance the state of the art.本数据集包含纵隔与腹部的计算机断层扫描（Computed Tomography, CT）图像，图像内的淋巴结位置均由美国国立卫生研究院临床中心（National Institutes of Health, Clinical Center）的放射科医师标注。影像生物标志物与计算机辅助诊断实验室（Imaging Biomarkers and Computer-Aided Diagnosis Laboratory）的放射科医师共为90名患者的CT图像标注了388枚纵隔淋巴结，同时为86名患者的CT图像标注了595枚腹部淋巴结。本数据集面向医学图像计算领域研究者，用于开发与评估计算机辅助检测方法。自动检测淋巴结可成为重要的临床诊断工具，但由于CT图像中周围组织对比度较低，且淋巴结的尺寸、空间姿态、形态各异且分布稀疏，该任务极具挑战性。本数据集公开可用，以便与其他检测方法进行直接对比，从而推动相关领域技术水平的提升。