PTCOG 61 Abstract Submission Extension – 17 January 2023

On behalf of the PTCOG Scientific Program Sub-Committee and the PTCOG 61 Secretariat, we would like to thank all those who have already submitted abstracts for PTCOG 61. We are excited to see a healthy mix of abstracts across the topics available and look forward to creating the final program.

Due to the large number of requests for additional time to submit abstracts we will now accept abstracts up to the end of the global day on Tuesday 17 January 2023. Please note that this will be the absolute final deadline and no further extension will be possible after this date. We welcome all new abstracts for PTCOG 61 and look forward to seeing you in Madrid.

Abstract Submission Guidelines

PTCOG 61 Invitation Letter

Dear Colleagues,

On behalf of the PTCOG Executive Committee and of the Local Organizing Committee, we are pleased to invite you to Madrid for the 61st edition of the annual PTCOG meeting. Madrid, the capital and most populous city of Spain, will astound you with its history, architecture, and local attractions. The meeting is co-organized by the two proton therapy centers in Madrid, while Spain is about to build 10 more centers to become the leading European country in proton therapy. A perfect time to hold the particle therapy meeting in Spain!

The conference this year will start with an educational session in Spanish language, followed by two days of education program in English language and 3 days of multi-session scientific reports with several subcommittee meetings in between. The conference theme is “Integrative Particle Therapy and Complementary Care“ reflecting the importance of integrating particle therapy into comprehensive cancer care. We expect an outstanding scientific program covering clinics, physics, and biology topics, many plenary talks and round tables for debating hot issues in particle therapy.

These days we are experience an inflection point in particle therapy. The number of centers is rapidly increasing all over the world, and over the past year we saw a lot of convincing evidence from clinical trials on the benefit of charged particle therapy. PTCOG is also rapidly growing, reaching now over 4,000 members and nearly 100 facility representatives in the Steering Committee. The Steering Committee elected new members of the Executive Committee during the PTCOG 60 meeting in 2021, and this will be the first meeting for the new PTCOG chair and vice-chairs, as well as for the new chairs of the Educational Sub-Committee. We hope that in Madrid all of you will participate in one of our 14 active Sub-Committees. We will also discuss PTCOG funding for small research projects and the future of the PTCOG Scientific journal, the International Journal of Particle Therapy. The Steering Committee will also be called to elect new members of the Executive Committee and to decide the site of the 2026 PTCOG annual meeting.

We look forward to your participation and spending time with you in Madrid. We are sure that this will be an awesome scientific experience and we also hope you will enjoy the local flavor and hospitality.

Welcome to PTCOG 61!

Marco Durante

PTCOG President

Alejandro Mazal


Martin Jermann

PTCOG Secretary

Felipe Calvo Manuel

Clinica Universidad de Navarra

PTCOG 61 Abstract Topics for Submission

Be part of the PTCOG 61 Official Scientific Program and have the opportunity to present your work live in Madrid. We invite research based on the below confirmed PTCOG 61 Abstract Topics, start your research now. We would also like to highlight updates to abstract topics compared to previous PTCOG conferences, particular within the set up of clinics topics. PTCOG 61 Abstract Submission will be available shortly and launched within November 2022.


Clinics (11 Topics)

  • Challenging clinical scenario: Why or why not particle therapy
  • Comparative effectiveness and cost-effectives analysis
  • General clinical results and patient reported outcome
  • Particle therapy-based re-irradiation
  • Particle therapy -based stereotactic radiotherapy and hypo-fractionated radiotherapy
  • Combined particle therapy with novel systemic therapy: efficacy and toxicities
  • Long-term complications and image changes after particle therapy
  • Complementary therapy in particle therapy (rehabilitation)
  • Novel treatment strategies using particle therapy
  • Clinical implementation of adaptive particle therapy
  • LET and variable RBE based particle therapy

Physics: (8 Topics):

  • Beam delivery and nozzle design
  • Quality Assurance.
  • Absolute and relative dosimetry
  • Treatment planning
  • Dose calculation and optimization
  • Image guidance
  • Adaptive and 4D therapy
  • FLASH and mini-beams – Planning, delivery, and dosimetry

Biology: (8 Topics)

  • iCPRT (immuno charged particle radiotherapy) – what progress has been made?
  • Targeted agents with CPRT
  • Biomarkers of CPRT response
  • Biological advantages for CPRT vs XRT
  • Mathematical Modeling and simulations of CPRT
  • Integrating biology in treatment planning – RBE and beyond
  • BNCT
  • FLASH and mini-beams

We look forward to seeing you in Madrid








PTCOG 61 Partners