- ANSI, (American National Standards Institute): http://www.ansi.org/
- CIRMS (Council on Ionizing Radiation Measurements and Standards): http://www.cirms.org/
- ICRU (International Commission on Radiation Units and Measurements): http://www.icru.org/
- IFMBE (International Federation for Medical and Biological Engineering): http://www.ifmbe.org/
- WHO (World Health Organisation): http://www.who.int/
- ACMP (American College of Medical Physics): http://www.acmp.org/
- COMP/CCPM (Canadian Medical Physics Organisations): http://www.medphys.ca/
- EFOMP (European Federation Of Organisations for Medical Physics): http://www.efomp.org/
- AAPM (American Association of Physicist in Medicine): http://www.aapm.org/
- IOMP (International Organisation of Medical Physicists): http://www.iomp.org/
- IUPESM (International Union for Physical and Engineering Sciences in Medicine): http://www.iupesm.org/
- ΝΕΜΑ (Society for Information Display): http://www.nemaweb.org/
- ACPSEM (Australasian College of Physical Scientists & Engineers in Medicine): http://www.acpsem.org.au/
- ΕΑΝΜ (European Association of Nuclear Medicine): http://www.eanm.org/
- EAR (European Association of Radiology): http://www.myesr.org/
- ESTRO (European Society for Therapeutic Radiology and Oncology): http://www.estro.org/
- ASTRO (American Society for Radiation Oncology): http://www.astro.org/
- RSNA (Radiological Society of North America): http://www.rsna.org/
- ABNM (American Board of Nuclear Medicine): http://bmd.ans.org/
- CAMPBE (Σύνδεσμος Ιατρικής Φυσικής και Βιοϊατρικής Μηχανικής Κύπρου): http://www.campbe.org/
- ΕΕΦ (Ένωση Ελλήνων Φυσικών): http://www.eef.gr/
- ΕΕΑΕ (Ελληνική Επιτροπή Ατομικής Ενέργειας): http://eeae.gr/
- ΕΦΙΕ (Ένωση Φυσικών Ιατρικής Ελλάδος): http://www.efie.gr/
- SSRMP (Swiss Society for Radiobiology and Medical Physics): http://www.sgsmp.ch/
- IRPA (International Radiation Protection Association): http://www.irpa.net/
- ICRP (International Commission on Radiological Protection): http://www.icrp.org/
- ICNIRP (International Commission on Non-Ionizing Radiation Protection): http://www.icnirp.de/
- IAEA (International Atomic Energy Agency): http://www.iaea.org/
- ACR (American College of Radiology): http://www.acr.org/
- EC EUROPA (E.U. publications on radiation protection): http://ec.europa.eu