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L. Molenaar MSc (Lennert)

PhD Candidate

About Me

Lennert Molenaar was born in Leiden, The Netherlands, in 1990. After graduating high school in 2008 he started to study Medicine at the University of Leiden, in 2009 he switched to Technical Medicine at the University of Twente. He obtained his master's degree (Medical Imaging & Intervention) in 2017. After four internships at three different hospitals and one mechatronics company, he graduated at the surgery department of Meander Medical hospital at Amersfoort under supervision of prof. dr. Ivo AMJ Broeders. Here he compared an active robotic laparoscopic camera holder with human steering. After graduation he started a PhD position at the Magnetic Detection & Imaging (MD&I) group at the University of Twente.

During his PhD Lennert is going to realize the clinical implementation of a newly developed laparoscopic magnetic probe for sentinel lymph node detection. This will be achieved by executing multiple trials; testing of different magnetic particles necessary for the lymph node detection, evaluating the depth penetration of the newly developed probe and human safety and efficacy tests.

Expertise

Medicine & Life Sciences
Ergonomics
Ferric Oxide
Randomized Controlled Trials
Robotics
Engineering & Materials Science
Iron Oxides
Magnetic Nanoparticles
Magnetometers
Nanoparticles

Publications

Recent
Azargoshasb, S. , Molenaar, L., Rosiello, G., Buckle, T., van Willigen, D. M. , van de Loosdrecht, M. M., Welling, M. M. , Alic, L. , van Leeuwen, F. W. B., Winter, A., & van Oosterom, M. N. (2022). Advancing intraoperative magnetic tracing using 3D freehand magnetic particle imaging. International journal of computer assisted radiology and surgery, 17(1), 211-218. https://doi.org/10.1007/s11548-021-02458-2
Wijsman, P. J. M. , Voskens, F. J. , Molenaar, L., van ‘t Hullenaar, C. D. P., Consten, E. C. J., Draaisma, W. A. , & Broeders, I. A. M. J. (2022). Efficiency in image-guided robotic and conventional camera steering: a prospective randomized controlled trial. Surgical endoscopy, 36(4), 2334–2340. https://doi.org/10.1007/s00464-021-08508-9
Horstman - van de Loosdrecht, M. M. , Molenaar, L. , Krooshoop, E. , ten Haken, B., Meijerink, W. J. H. J. , Alic, L. , & Broeders, I. A. M. J. (2021). Magnetic nanoparticle detector for laparoscopic surgery: assessment of detection sensitivity. Abstract from International congress on computer assisted radiology and surgery, CARS 2021, Munich, Germany.
Molenaar, L. , van de Loosdrecht, M. M., van Baarlen, J. , Broeders, I. A. M. J. , ten Haken, B., & Roelink, H. (2019). Sentinel node procedure in prostate and bladder cancer utilizing differential magnetometry: A first patient trial. Poster session presented at 9th International Workshop on Magnetic Particle Imaging 2019, New York, New York, United States.
Wijsman, P. J. M. , Molenaar, L., van‘t Hullenaar, C. D. P., van Vugt, B. S. T., Bleeker, W. A., Draaisma, W. A. , & Broeders, I. A. M. J. (2019). Ergonomics in handheld and robot-assisted camera control: a randomized controlled trial. Surgical endoscopy, 33(12), 3919-3925. https://doi.org/10.1007/s00464-019-06678-1
Molenaar, L., Roelink, H., van Baarlen , J. , Pouw, J. J. , ten Haken, B. , & Broeders, I. A. M. J. (2018). Sentinel node biopsy in prostate and bladder cancer using magnetic nanoparticles and a new magnetic detection technique. Abstract from International Sentinel Node Society Biennial Meeting 2018 , Tokyo, Japan.

UT Research Information System

Contact Details

Visiting Address

University of Twente
Faculty of Science and Technology
Technohal (building no. 18), room 2184
Hallenweg 5
7522NH  Enschede
The Netherlands

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Mailing Address

University of Twente
Faculty of Science and Technology
Technohal  2184
P.O. Box 217
7500 AE Enschede
The Netherlands