Publications by authors named "Roelf Slopsema"

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Initiating proton ocular treatments on general-purpose beamlines: Challenges and trends from the survey of USA facilities.
Alexei V Trofimov, Amanda J Deisher, Heng Li, Haibo Lin, Maria Mamalui, Roelf Slopsema

Int J Radiat Oncol Biol Phys· December 2025

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PTCOG Ocular Statement: Expert Summary of Current Practices and Future Developments in Ocular Proton Therapy.
Jan Hrbacek, Andrzej Kacperek, Jan-Willem M Beenakker, Linda Mortimer, Andrea Denker, Roelf Slopsema

Int J Radiat Oncol Biol Phys· December 2024

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Initial experience and patient tolerance of proton stereotactic body radiotherapy.
Naba Ali, Jun Zhou, Bree R Eaton, Jeffrey M Switchenko, Yichun Cao, Roelf Slopsema

J Radiosurg SBRT· January 2024

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Effect of the initial energy layer and spot placement parameters on IMPT delivery efficiency and plan quality.
Mingyao Zhu, Stella Flampouri, Alex Stanforth, Roelf Slopsema, Zachary Diamond

J Appl Clin Med Phys· September 2023

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A component method to delineate surgical spine implants for proton Monte Carlo dose calculation.
Chih-Wei Chang, Serdar Charyyev, Joseph Harms, Roelf Slopsema, Jonathan Wolf

J Appl Clin Med Phys· January 2023

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Treatment of Uveal Melanoma With Radioactive Iodine 125 Implant Compared With Proton Beam Radiotherapy.
James P Bolling, Roi Dagan, Michael Rutenberg, Maria Mamalui-Hunter, Steven J Buskirk, Roelf Slopsema

Mayo Clin Proc Innov Qual Outcomes· February 2022

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Characterization of the HollandPTC proton therapy beamline dedicated to uveal melanoma treatment and an interinstitutional comparison.
Emmanuelle Fleury, Petra Trnková, Kees Spruijt, Joël Herault, Franciska Lebbink, Roelf Slopsema

Med Phys· August 2021

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Clinical commissioning of intensity-modulated proton therapy systems: Report of AAPM Task Group 185.
Jonathan B Farr, Michael F Moyers, Chris E Allgower, Martin Bues, Wen-Chien Hsi, Roelf Slopsema

Med Phys· January 2021

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A standardized commissioning framework of Monte Carlo dose calculation algorithms for proton pencil beam scanning treatment planning systems.
Chih-Wei Chang, Sheng Huang, Joseph Harms, Jun Zhou, Rongxiao Zhang, Roelf Slopsema

Med Phys· April 2020

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Impact of intrafraction prostate motion on clinical target coverage in proton therapy: A simulation study of dosimetric differences in two delivery techniques.
Zhong Su, Roelf Slopsema, Stella Flampouri, Zuofeng Li

J Appl Clin Med Phys· October 2019

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TOPAS Monte Carlo simulation for double scattering proton therapy and dosimetric evaluation.
Hongdong Liu, Zuofeng Li, Roelf Slopsema, Liu Hong, Xi Pei

Phys Med· June 2019

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Evaluation of the range shifter model for proton pencil-beam scanning for the Eclipse v.11 treatment planning system.
Witold Matysiak, Daniel Yeung, Roelf Slopsema, Zuofeng Li

J Appl Clin Med Phys· March 2016

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Dosimetric evaluation of hybrid brass/stainless-steel apertures for proton therapy.
Hao Chen, Witold Matysiak, Stella Flampouri, Roelf Slopsema, Zuofeng Li

Phys Med Biol· September 2014

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A simplified methodology to produce Monte Carlo dose distributions in proton therapy.
Chris Beltran, Yingcui Jia, Roelf Slopsema, Daniel Yeung, Zuofeng Li

J Appl Clin Med Phys· July 2014

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Comparison of three-dimensional (3D) conformal proton radiotherapy (RT), 3D conformal photon RT, and intensity-modulated RT for retroperitoneal and intra-abdominal sarcomas.
Erika L Swanson, Daniel J Indelicato, Debbie Louis, Stella Flampouri, Zuofeng Li, Roelf Slopsema

Int J Radiat Oncol Biol Phys· August 2012

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An experimental investigation into the effect of periodic motion on proton dosimetry using polymer gel dosimeters and a programmable motion platform.
Zhong Su, Olena Lopatiuk-Tirpak, Omar Zeidan, S I Sruprisan, Sanford L Meeks, Roelf Slopsema

Phys Med Biol· February 2012

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Dosimetric uncertainty in prostate cancer proton radiotherapy.
Liyong Lin, Carlos Vargas, Wen Hsi, Daniel Indelicato, Roelf Slopsema

Med Phys· November 2008

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Clinical implementation of full Monte Carlo dose calculation in proton beam therapy.
Harald Paganetti, Hongyu Jiang, Katia Parodi, Roelf Slopsema, Martijn Engelsman

Phys Med Biol· September 2008

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Sensitivities in the production of spread-out Bragg peak dose distributions by passive scattering with beam current modulation.
Hsiao-Ming Lu, Robert Brett, Martijn Engelsman, Roelf Slopsema, Hanne Kooy

Med Phys· October 2007

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Incorporation of the aperture thickness in proton pencil-beam dose calculations.
Roelf L Slopsema, Hanne M Kooy

Phys Med Biol· November 2006

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The prediction of output factors for spread-out proton Bragg peak fields in clinical practice.
Hanne M Kooy, Stanley J Rosenthal, Martijn Engelsman, Alejandro Mazal, Roelf L Slopsema

Phys Med Biol· December 2005

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