[POSTPONED UNTIL 2021] Dose Modelling and Verification for External Beam Radiotherapy

Barcelona, Spain

Bemused by external beam modelling? Dazed by dose calculation algorithms? This course shines the spotlight on treatment planning systems and dose verification for external beam therapy.

The course is primarily aimed at and recommended for medical physicists and experienced dosimetrists working in treatment planning. The participants should preferably have some practical experience in radiotherapy physics and treatment planning systems. A good medical physics background is required.

Course Director 

  • Tommy Knöös, Medical Physicist, Skåne University Hospital and Lund University, Lund (SE) 
  • Brendan McClean, Medical Physicist, St Luke’s Radiation Oncology Network, Dublin (IE)


  • Anders Ahnesjö, Medical Physicist, Uppsala University, Uppsala (SE) 
  • Crister Ceberg, Medical Physicist, Lund University, Lund (SE) 
  • Maria Mania Aspradakis, Medical Physicist, Cantonal Hospital of Lucerne, Lucerne (CH) 
  • Núria Jornet, Medical Physicist, Hospital de la Santa Creu in Sant Pau, Barcelona (ES)

Local organisers 

Angeles Rovirosa, Radiation Oncologist, University of Barcelona, Barcelona (ES)

Antonio Herreros, Physicist, University of Barcelona, Barcelona (ES)

The course aims to: 

  • Review external beam radiotherapy physics and beam modelling
  • Make understandable the concepts behind multi-source modelling and dose calculation algorithms in state-of-the-art treatment planning systems
  • Identify and describe the important aspects of commissioning treatment planning systems
  • Review dosimetry equipment and dose verification methods of importance for commissioning and verification measurements
  • Enable practical implementation of concepts for dose verification in advanced external beam therapy. 


Learning Outcomes

By the end of this course participants should be able to: 

  • Identify and interpret the input data requirements for the configuration of beam models
  • Illustrate modelling of the patient, treatment beam and energy deposition in the treatment planning process
  • Present the concepts behind simple and advanced dose calculation algorithms as implemented on modern treatment planning systems and monitor unit or dose calculation check software tools 
  • Compare and critically evaluate the tools and methods available for the verification of the calculated dose
  • Assess aspects of quality assurance specific to the treatment planning process

Course Content

  • Review of basic concepts of fluence, radiation transport and convolution 
  • Linac head design and multisource models 
  • Patient and phantom characterisation for treatment planning systems 
  • Point kernel, pencil beam and grid based approaches to dose calculation 
  • 1D, 2D and 3D detectors for measurement 
  • Use of measured data in beam models  
  • Monitor unit calculation and relation to beam models 
  • Commissioning and quality assurance of a treatment planning system 
  • Dose based metrics 
  • Practical exercises on monitor unit calculation and modelling


Before commencing this course you should preferably have attended the ESTRO course ‘Physics for Modern Radiotherapy’ or equivalent.

Teaching Methods

  • 21 hours of lectures 
  • 4 hours of practical workshops 
  • 2 hours of Q&A 

The course consists of didactic lectures, interactive discussion sessions and practical calculation and modelling sessions. Lectures and preparation workshops will be given on monitor unit calculation and beam modelling. Participants will engage in realistic monitor unit calculation scenario exercises. Participants will also undertake computer-based modelling of basic models for photon beam head scatter and kernel based dose calculations. 

Methods of Assessment

  • MCQ  
  • Q&A 
  • Practical exercises 
  • Evaluation form.




Available here

Key Words

Beam models and dose calculation approaches in treatment planning systems, commissioning, verification and quality assurance of treatment planning systems.


Facultat de Medicina - Campus Clínic August Pi i Sunyer

Carrer de Casanova 143

08036 Barcelona



We recommend that you search suitable accommodation through one of the online booking websites.  ESTRO will not be providing any accommodation for this course.


ESTRO members can order products at substantially reduced prices. Please note that in order to benefit from the member price, you must renew your membership for 2020 before registering to the course.To benefit from these member rates, please visit the membership page to become a member or renew your membership BEFORE proceeding with your order.



Early rate

Late rate

In-training members*   500 EUR  675 EUR
Members   650 EUR   775 EUR
Non Members   800 EUR  900 EUR

* Members with specialty RadiationTherapist (RTT) may register at the In Training fee

The fee includes the course material, coffees, lunches, and the social event.

Advance registration & payment are required.

On-site registration will not be available.

Since the number of participants is limited, late registrants are advised to contact the ESTRO office before payment, to inquire about availability of places. Access to homework and/or course material will become available upon receipt of full payment.

Insurance and cancellation

The organiser does not accept liability for individual medical, travel or personal insurance. Participants are strongly advised to take out their own personal insurance policies.   

In case an unforeseen event would force ESTRO to cancel the meeting, the Society will reimburse the participants fully the registration fees. ESTRO will not be responsible for the refund of travel and accommodation costs.

In case of cancellation, full refund of the registration fee minus 15% for administrative costs may be obtained up to three months before the course and 50% of the fee up to one month before the course. No refund will be made if the cancellation request is postmarked less than one month before the start of the course.

Reduced fees

ESTRO members from economically challenged countries may register at a preferential rate of 350 Euro if three conditions are met:

  1. Only ESTRO members for 2020 are eligible (please make sure your 2020 membership is in order before you apply for the reduced fees)
  2. Only one course per person per year can be subsidized by ESTRO
  3. Sponsored candidates are not entitled to reduced fees (the invoicing address has to be the one of the participant)  

Please note: 

  • We can only guarantee a certain number of reduced fees per course
  • Application deadlines are the same as early registration fees (3 months before the course date

List of Economically challenged countries and eligible courses