• Contribute to the TRS Political Action Committee
• American College of Radiology

ACR Affiliates:

• American Society for Therapeutic Radiology and Oncology
• International Society of Radiology
• Radiation Therapy Oncology Group
• Radiologyinfo.org (Patient information)
• Society for Health Services Research in Radiology
• Society of Interventional Radiology
• Society of Radiologists in Ultrasound
• Society of Pediatric Radiology
• Society of Interventional Radiology

Federal:

• Health Care Financing Administration
• National Institutes of Health
• Food and Drug Administration
• Centers for Disease Control and Prevention
• Nuclear Regulatory Commission
• Occupational Safety and Health Administration
• Environmental Protection Agency