Since 18 of December 2019 uses Nucleus credentials. Visit our help pages for information on how to Register and Sign-in using Nucleus.

Jun 2 – 5, 2025
Vienna International Centre (VIC)
Europe/Vienna timezone


The International Atomic Energy Agency (IAEA) is organizing the fourth International Conference on Advances in Radiation Oncology (ICARO4), following the success of the previous conferences (ICARO, ICARO2 and ICARO3) in 2009, 2017 and 2021. The advances in radiotherapy in the last years have been striking, although numerous challenges are still to be faced, including achieving access to high standard cancer care in many countries. New radiotherapy techniques have been implemented, including stereotactic radiotherapy, intensity modulated radiation therapy, image guided and motion management, magnetic resonance imaging-guided linear accelerator Linacs, three-dimensional conformal brachytherapy, proton and light ion therapy. The increased use of these complex techniques, coupled with the need to treat more patients in less time, will continue to drive a reliance on high-end technologies and impose a financial burden on health care programmes. In addition, the development and implementation of a quality assurance programme for these new techniques pose major challenges in Member States.

The conference, which will be held from 2-5 June 2025, will give health care professional an opportunity to review the current developments in clinical applications in the fields of radiation biology and medical physics, with a view to addressing the challenges of appropriate cancer management in Member States.

It will also critically examine the pivotal role of emerging radiotherapy techniques in tackling the health challenges common to many Member States.

An appropriate number of accredited continuing medical education (CME) credits will be awarded to participants.


Purpose and Objectives


The conference will review important clinical, scientific, and clinical aspects covering different aspects of radiotherapy. It will have the following specific objectives:

  • To review the current role and potential of clinical, medical physics, technological and molecular/biological innovations in radiation oncology.
  • To explore the applications of improved imaging tools in treatment planning.
  • To review the current status of evidence-based recommendations for the treatment of common cancers.
  • To review the latest developments in medical dosimetry and dose auditing procedures for new radiotherapy technologies.
  • To review the present situation of comprehensive audits in radiotherapy.  
  • To review resource sparing approaches in clinical radiotherapy practices.
  • To exchange information on the latest advances and implementation challenges in the field among leading experts.
  • To define future challenges and directions in the clinical use of radiotherapy.


Expected Outcomes


The conference wil provide clinicians, scientists, and professionals with an international forum at which they can review the latest developments in all aspects of radiotherapy, with a view to addressing the health challenges common to many IAEA Member States.





Vienna International Centre (VIC)
M3; M Plenary BR B/M1 (Main); M6 ; M7 ; M5
Wagramerstrasse, 5 1220 Vienna

Scientific Secretaries:

Ms Soha Salem

Applied Radiation Biology and Radiotherapy Section

Division of Human Health

Department of Nuclear Sciences and Applications

Tel.: +43 1 2600 22648



Mr Godfrey Azangwe

Dosimetry and Medical Radiation Physics Section

Division of Human Health

Department of Nuclear Sciences and Applications

Tel.: +43 1 2600 28384 



Administration and organization:

Ms Nancy Herter
Conference Services Section
Division of Conference and Document Services
Department of Management
Tel.: +43 1 2600 21315


Subsequent correspondence on scientific matters should be sent to the Scientific Secretaries, and correspondence on administrative matters to the Conference Services Section.

Conference Web Page​ 

​​Please visit the IAEA web page​ ​Home: International Conference on Advances in Radiation Oncology (ICARO-4) | IAEA regularly for new information regarding this conference.​ 

The call for abstracts is open
You can submit an abstract for reviewing.