title: Labeling Medical Image
body: <p>I want to extract ground truth from my medical data. I'm looking for a program that can help with this. What I want to do is as follows.
  I want to select a specific area and make it white, and I want it to be black in the other area. So I would have ground truth in my hand. There are examples in the pictures. Note: I dont have ground truth, only have original images without ground truth. I need to draw and extract this area from original image...
  <a href="https://i.stack.imgur.com/dl6lR.jpg" rel="nofollow noreferrer">enter image description here</a>Thank you for your help in advance.</p>
  
  <p><a href="https://i.stack.imgur.com/dl6lR.jpg" rel="nofollow noreferrer">enter image description here</a></p>