• The abstract submission for ESTRO 2024 is opens on 8 January 2024. The submission deadline is on 24 January 2024 (23h59 CET). 
  • Abstracts must be submitted online via the ESTRO website at
  • We highly recommend completing your submission early to avoid technical delays due to server overload close to the deadline
  • For questions regarding the submission process, please e-mail 



  • The work and/or update must be novel, ground-breaking, of high significance, evidence-based and with scientific merit. 
  • The work and/or update must be original and not previously published or presented at any other scientific meeting. 
  • The abstract must present timely findings which were not available at the time of the regular abstract submission deadline (25 October 2023). The late-breaking abstract deadline is not intended to be a second deadline for abstract submissions 
  • A limited number of late-breaking abstracts will be accepted. 
  • Submissions will be accepted for oral presentation only. 



The submitting author of an abstract:  

  • Accepts responsibility for the accuracy of the abstract and ascertains that all authors are aware of the content before submission.
  • Accepts to be the contact person for all correspondence related to the abstract and to inform the co-authors about its status.
  • Confirms that all authors contributing to the abstract are properly included in the author list.
  • Accepts to identify any financial interest in products or processes described in the abstract. This includes stock ownership, membership on any advisory boards, commercially sponsored research or any other substantial relationships.  
  • Certifies that, if accepted the abstract is selected, the information reported is for the exclusive presentation in the scientific programme and will not be presented at any commercially-sponsored satellite symposia during the congress.  
  • Abstracts are embargoed until 1 month prior to the congress at which point the abstract book is published on the website and abstracts are included in the online searchable programme. Should you wish for an abstract to be embargoed until the congress, please email by 28 February 2024. 
  • Abstracts must be submitted and presented in English. The Scientific Programme Committee reserves the right to reject an abstract written in poor English. 




  • Abstract titles should be brief and reflect the content of the abstract
  • The title (maximum 100 characters) is important since it focuses attention (it is the “showcase” for the presentation).
  • Do not use capital letters in the title except for words that are always capitalised and do not use non-standard abbreviations.
  • Prospective clinical trials should be identified as such in the title of the abstract (include The National Clinical Trial number when applicable) 


Abstracts should be structured in such a way as to include:

  1. Purpose/Objective
  2. Material/Methods
  3. Results
  4. Conclusion


  • Abstracts on research obviously not yet performed and results not yet obtained will be rejected.
  • Case studies will not be considered (unless if first-in-human) 
  • Papers already presented in another meeting will not be considered, unless the previous audience is distinct from the ESTRO 2023 congress audience (e.g. national meetings).  
  • Abstracts should include new information and not solely include materials already published. 
  • If very similar abstracts are submitted by the same authors, the Scientific Programme Committee reserves the right to select only one of the abstracts and reject any others. 



  • The online abstract submission system will not accept abstracts that exceed 3,000 characters (body of the abstract, including spaces).  
  • The use of standard abbreviations is desirable. A special or unusual abbreviation must be placed (in round brackets) after the first appearance of the word for which it stands.  
  • Tables and images may be included in an abstract but must be limited to two uploads (tables or images) in JPG or PNG formats. These uploads are not included in the character count. The maximum pixel size of an image is 600(w) x 800 (h) pixel. Larger images will not be properly visible in the abstract. Please ensure the content of the image is readable at this size. Abstracts containing multiple tables or figures with one image upload will be penalised during the review process.
  • Authors may include one data table using the insert table icon (we advise not to copy-paste a table into the body of the abstract). The characters in a data table are included in the character count.  
  • Equations can be inserted in the text as images.  



  • Abstracts can be edited until the submission deadline of 24 January 2024.
  • Any changes to abstract are not accepted after this date. 
  • Please ensure all authors are included in the list and appear correctly in the abstract overview.
  • After submission you will receive a confirmation email containing a link to the abstract overview. Please click on this link and check the abstract is complete and has no errors or omissions.



  • Abstracts submitted for presentation will be reviewed by the Scientific Programme Committee. 
  • Abstract review criteria are based on clarity, supporting data, scientific rigour, potential significance, interest in the topic chosen and innovation or usefulness.
  • Notifications of abstract selection will be sent by mid-February 2024.
  • Please note that acceptance of an abstract does not entitle the authors to a complimentary registration. Presenting authors should register for the congress by the early registration deadline.



  • Submitted abstracts can be withdrawn until 1 February 2024.
  • To withdraw your abstract, you should send an email to
  • After this date, withdrawal of abstracts is no longer possible.
  • If the presenting author cannot attend the congress, they should nominate a co-author and inform the ESTRO office as soon as possible.