forensic specialist dr michelle tully uses computed tomography scans or c.t. scans to help determine what happened in syria every cadaver link to a police investigation is scanned and in this case police a puzzled. dish will do this i suspect says he thinks the victim pulled a gun 1st and then he pulled a gun but that seems at odds with the location of the entry will say that much is at the back of the victim's head not the front so we're trying to find out what really happened to. this. the procedure is called of a topsy a virtual autopsy a c.t. scan shows of bodies bones blood vessels and soft tissues it combines a series of x. rays taken from different angles into cross-sectional images will slices each slice is no sicker than a page dr tally finds the bullet in just a few seconds i don't see anything here for him that you can see the nose here in front again you've who you guys are up here and this is the brain isn't that i ski and if we move upward a little we see that this area of the brain shows evidence of bleeding and that's where the bullet is a year