Use these links as valuable sources of additional information: AARP http://www.aarp.org American College of Radiology http://www.acr.org Baptist Hospital http://www.baptisthospital.com HealthSouth http://www.healthsouth.com Nashville Academy of Medicine http://www.nashvillemedicine.org National Osteoporosis Foundation http://www.nosf.org Radiological Society of North America http://www.rsna.org/index.html Radiology Channel http://www.radiologychannel.net St. Thomas Hospital http://www.stthomas.org Society of Cardiovascular and Interventional Radiology http://www.scvir.org Tri-Star Health (Centennial Medical Center) http://www.tristarhealth.com