SegTHOR: Segmentation of THoracic Organs at Risk in CT images

News Oct'18: Our challenge has just been accepted at ISBI'19!

Our challenge addresses the problem of organs at risk segmentation in Computed Tomography (CT) images. In lung and esophageal cancer, radiation therapy is a treatment of choice, and the irradiation planning begins with the delineation of the target tumor and healthy organs located near the target tumor, called Organs at Risk (OAR) on CT images. Routinely, the delineation is largely manual which is tedious and source of anatomical errors. For some organs (e.g. esophagus), the segmentation is especially challenging: shape and position vary greatly between patients; the contours in CT images have low contrast, and can be absent. In this challenge, we focus of 4 OAR: heart, aorta, trachea, esophagus, which are shown on the figure below.

The goal of the SegTHOR challenge is to automatically segment 4 OAR: heart, aorta, trachea, esophagus. Participants will be provided with a training set 40 CT scans with manual segmentation. The test set will include 20 CT scans.