The video below illustrates how a lung tumor can move with normal breathing.  By using 4-D RT, radiation oncologists can be confident that the tumor receives the full dose of radiation even if the tumor moves with breathing.  If you were a sharpshooter, wouldn't you want to know if your target is stationary or if it moves?

Image gating application enabling you to visualize motion

 

4-Dimentional Radiation Therapy (4-D RT) is one of the latest advances available in radiation oncology to target tumors that move with breathing.  4-D RT allows the radiation oncologists to track the tumor's motion so that precise radiation can be aimed at the tumor without risking a marginal miss. 

Click here to view demo - 4-Dimensional R-T