S Goetsch1*, X Qi2*, V Sehgal3*, J Clements4*, M Barker5*, Z Shen6*, (1) San Diego Medical Physics, Solana Beach, CA, (2) UCLA School of Medicine, Los Angeles, CA, (3) University Of California, Irvine, Orange, CA, (4) Kaiser Permanente, Pasadena, CA, (5) Sansum Clinic, Santa Barbara, CA, (6) University of Southern California, Los Angeles, CA