1. Prevention of radiation injury from medical imaging
Erica L. Mitchell, MD, Patricia Furey, MD 
Journal of Vascular Surgery 
Volume 53, Issue 1, Pages 22S-27S (January 2011)
DOI: /j.jvs
Copyright © 2011 Society for Vascular Surgery Terms and Conditions

2. Fig 1
Correct and incorrect positioning of the x-ray tube in relationship to the patient.
Journal of Vascular Surgery  , 22S-27SDOI: ( /j.jvs )
Copyright © 2011 Society for Vascular Surgery Terms and Conditions

3. Fig 2 Graphic representation of the inverse square law.
Journal of Vascular Surgery  , 22S-27SDOI: ( /j.jvs )
Copyright © 2011 Society for Vascular Surgery Terms and Conditions