<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>Hello everyone,</div><div><br></div><div>I kindly request you to help me with the following issue:</div><div><br></div><div>I have made a program that reads a series of CT slices and makes a volume out of it. Then I use the filter <vtkExtractVOI> and I define the subvolume that I want to subtract with the setVOI(). In the same render window I can visualize both the initial volume and the new extracted volume.</div><div><br></div><div>What I want to do is to draw a box with the values that I put in the setVOI() so I can see in my initial volume which part of it I extract.</div><div><br></div><div>Please if anyone knows to give some hints how to do it I would be very happy!!!</div><div><br></div><div>Thanks a lot in advance, christos<br></div><div><br></div><div> </div></div></body></html>