www.iaea.org – International Atomic Energy Agency
http://rpop.iaea.org/RPoP/RPoP/Content/index.htm – IAEA Radiological Protection of Patients
http://www.iomp.org/ – International Organisation for Medical Physics (IOMP)
http://www.efomp.org/ – European Federation of Organisations for Medical Physics (EFOMP)
http://www.ipem.ac.uk – Institute of Physics and Engineering in Medicine (IPEM)
http://www.euref.org – European Reference Organisation for Quality Assured Breast Screening and Diagnostic Services (EUREF)
http://www.cancerscreening.nhs.uk/breastscreen/ – The NHS Breast Screening Programme (UK)
http://www.impactscan.org/ – Imaging Performance Assessment of CT scanners in UK
http://rvl4.ecn.purdue.edu/~malcolm/pct/pct-toc.html – електронен учебник за СТ “Principles of Computerized Tomographic Imaging “
http://www.sprawls.org/ – The Sprawls Educational Foundation
http://www.bulrad.bg/ – Българска асоциация по радиология
Radiation Oncology in Physics