Jan-Willem Beenakker

Principal Investigator

Jan-Willem Beenakker [CV] is a physicist by training who has made the transition from the fundamental research setting of a physics laboratory to the clinical setting of a medical hospital. Using his background in experimental physics, he develops novel technologies to enable MRI for ocular conditions and applies them clinically. His innovations have become part of regular clinical care, saving the vision and eyes of many patients.

Current members

  • Jan-Willem Beenakker

    Jan-Willem Beenakker

    Associate professor

    Jan-Willem is a physicist who after his PhD started his research group in an academic hospital. Using his background in experimental physics, he develops novel technologies to enable MRI for ocular conditions and apply them clinically.

  • Corné Haasjes

    Corné Haasjes

    PhD candidate

    After obtaining his master’s degree in Medical Physics, Corné started his PhD as part of the COMPOSE project to develop techniques to accurately combine optical fundus imaging with MRI. He is one of the active maintainers of Visisipy.

  • Martijn Hol

    Martijn Hol

    PhD candidate

    Since 2015, Martijn works as a medical physics engineer specialized in image-guided radiotherapy. In 2023, he started as a PhD on clipless ocular proton therapy, together with the HollandPTC, and, more specifically, on the uncertainties within the current workflow.

  • Lisa Klaassen

    Lisa Klaassen

    PhD candidate

    After obtaining her master’s in Technical Medicine, Lisa started her PhD aiming to improve ocular proton treatment planning with MRI. She combines research with patient care as a clinical technologist at HollandPTC.

  • Lennart Pors

    Lennart Pors

    PhD candidate

    After his training as a medical doctor, Lennart went on to pursue his PhD working on MRI-based eye modelling and radiotherapy treatment planning, including NTCP modeling of the eye’s healthy structures.

  • Iris Mulder

    Iris Mulder

    PhD candidate

    After obtaining her Master’s degree in Biomedical Engineering, track Medical Physics, Iris started her PhD as part of the COMPOSE project. She will work on accurately incorporating MR-images in ocular radiotherapy planning.

  • Anna Noordermeer

    Anna Noordermeer

    RT Technician

    As a radiotherapy lab technician, Anna is specialized in treatment planning. In addition to her clinical duties, she assists in the development and evaluation of MRI-based ocular proton therapy planning.

  • Nadine van Dam

    Nadine van Dam

    PhD candidate

    Following the completion of her Master’s degree in Electrical Engineering, Nadine embarked on her PhD, dedicating her research to the development of an ocular cone-beam CT scanner for eye cancer patients.

  • Louise Albertyn

    Louise Albertyn

    PhD candidate

    After working as an ANIOS ophthalmology, Louise started her PhD as part of the PACT4EYE project, contributing to the clinical development of a photo-activated chemotherapy for the treatment of uveal melanoma.

  • Ellen De Mol

    Ellen De Mol

    Bachelor student

    Ellen is an Astronomy and Physics student, with an interest in Medical Physics. As bachelor research project, she will study the origin of the blue light some patients see during ocular proton therapy.

  • Guus Versteeg

    Guus Versteeg

    PhD candidate

    As a technical physician, Guus continued his career with a PhD in the Departments of Ophthalmology and Radiotherapy, where he works on the clinical implementation of an ocular cone‑beam CT scanner for eye cancer patients.

  • Tekin Kirbiz

    Tekin Kirbiz

    Master student

    Tekin is a medical master’s student with a focus on ophthalmology. His thesis research examines shifts treatment selection for uveal melanoma since the introduction of ocular proton therapy in the Netherlands.

  • Robin Paalvast

    Robin Paalvast

    Bachelor student

    Robin is a Medical Natural Sciences student at Vrije Universiteit Amsterdam. His bachelor research investigates differences between model-based and delineation-based approaches for target volume definition in treatment planning.

Collaborators

As members of the Leiden Ocular Tumour Center, we have tight interactions with both clinicians and scientists. These collaborations allow us to achieve a swift translation from technical development to societal impact.

    Ophthalmology

    • Khanh Vu
    • Marina Marinkovic
    • Gré Luyten
    • Martine Jager
    • Noor Hoes

    Radiology

    • Teresa Ferreira
    • Berit Verbist
    • Guido van Haren
    • Thomas Ruytenberg
    • Arjon van Lange

    Radiation Oncology

    • Coen Rasch
    • Steven Habraken
    • Nanda Horeweg
    • Eleftheria Astreinidou

    Gorter MRI Center

    • Andrew Webb
    • Thijs van Osch
    • Hermien Kan
    • Louise van der Weerd

    HollandPTC

    • Pauline Bakker
    • Fasco van Ommen
    • Mischa Hoogeman
    • Christel v/d Steeg
    • Patricia Cambraia Lopes

    Others

    • Martijn Tannemaat and Jan Verschuren (LUMC dept. Neurology)
    • Just Herder (TU Delft)
    • Caroline Klaver (Erasmus MC)
    • PTCOG Ocular members

Alumni

NameWhat did they do next
Bas v/d Burgh (2023 - 2024)High-tech engineer at VIRO
Luc van Vught (2016 - 2022)Started an ophthalmology residency at the LUMC
Kevin Keene (2018 - 2022)Started as Neurology resident at Haga in The Hague
Teresa Ferreira (2015 - 2023)Senior neuroradiologist at LUMC
Myriam Jaarsma-Coes (2017 - 2021)Data scientist at Sint Jansdal in Harderwijk
Kilany Hassan (2017 - 2019)Postdoc at department of Radiotherapy LUMC
Niels Dekker (2016 - 2021)Scientific programmer at Leiden Center for Clinical Image Processing
Zoraida Gaurisankar (2014 - 2020)Ophthalmologist at OLVG in Amsterdam
Gwyneth van Rijn (2011 - 2020)Ophthalmologist at Amsterdam University Medical Center
Lorna Grech-Fonk (2016 - 2020)Ophthalmology physician assistant at Gelre Ziekenhuizen in Apeldoorn