Dr. Alexei Chvetsov is an Associate Professor of Clinical Medical Physics in the Department of Radiation Oncology at the University of Washington, Seattle, USA. Dr. Chvetsov received his Ph.D. in Nuclear Engineering from the Moscow Engineering Physics Institute in 1992 and completed training in radiotherapy physics at the Tom Baker Cancer Center in Canada. He is certified by the Canadian College of Physicists in Medicine since 2003 and the American Board of Radiology since 2004. His research interests include treatment response assessment, modeling and optimization of radiotherapy outcomes, inverse treatment planning and computational particle transport methods. Dr. Chvetsov is a member of Task and Work groups of the American Association of Physicists in Medicine. He also has been an Associate Editor of Medical Physics since 2011 and is currently a member of the Board of Associate Editors.