1. Radiation physics Journal of Vascular Surgery
Britt H. Tonnessen, MD, Lori Pounds, MD, RVT 
Journal of Vascular Surgery 
Volume 53, Issue 1, Pages 6S-8S (January 2011)
DOI: /j.jvs
Copyright © 2011 Society for Vascular Surgery Terms and Conditions

2. Fig
The electromagnetic spectrum. Higher-frequency radiation, such as x-rays, carry more energy than lower frequencies and can penetrate tissue.
Journal of Vascular Surgery  , 6S-8SDOI: ( /j.jvs )
Copyright © 2011 Society for Vascular Surgery Terms and Conditions