Results 11 to 20 of about 66,616 (143)

Commissioning and verification of a 3D Monte Carlo independent calculation software for O-ring linac systems. [PDF]

J Appl Clin Med Phys
Abstract Background O‐ring linac systems improve radiotherapy efficiency but require rigorous pretreatment verification due to increased delivery uncertainty in IMRT/VMAT. Existing methods face limitations: measurement‐based approaches incur setup errors, while calculation‐based methods (e.g., Monte Carlo) need machine‐specific validation per AAPM TG ...
Meng X, Dong T, Liang Y, Zhou Z, Wang Z, Qiu J, Zhao J, Zhang Z, Li W, Yang B.   +9 more
europepmc   +2 more sources

Editorial: 2^nd collection of special issue in innovations, advances, and challenges in precision radiation oncology physics. [PDF]

Precis Radiat Oncol
Precision Radiation Oncology, Volume 9, Issue 4, Page 232-233, December 2025.
Guan F, Campelo S, Jiang Z, Bronk L.
europepmc   +2 more sources

Feasibility of treatment planning with HyperArc stereotactic radiosurgery methods for ocular tumors. [PDF]

J Appl Clin Med Phys
Abstract Purpose/objectives Currently, ocular disease is primarily managed with COMS plaque brachytherapy. Various stereotactic radiosurgery (SRS) platforms have also been employed, yet widespread access remains a challenge. Herein, we demonstrate the feasibility of using the HyperArc SRS system to provide an additional platform for the treatment of ...
Cochran C, McCarthy S, St Clair W, Pokhrel D.   +3 more
europepmc   +2 more sources

Beam commissioning of a new compact scanned proton therapy system with four different dose calculation algorithms. [PDF]

J Appl Clin Med Phys
Abstract Background The Central Japan International Medical Center (Gifu prefecture, Japan) as the 20th Proton Therapy Institution in Japan, has newly installed a compact scanned proton therapy system, ProBeam 360°™. We installed two commercial treatment planning systems (TPSs): Eclipse and RayStation.
Tanokura R, Horita M, Matsumoto M, Miyahara A, Furukawa S, Ido Y, Matsumoto A, Ogawa S, Makino W, Matsui Y, Tominaga Y, Kato T, Fuwa N.   +12 more
europepmc   +2 more sources

3D printed collimators and dosimetry for spatially fractionated radiation therapy. [PDF]

J Appl Clin Med Phys
Abstract Background Spatially fractionated radiation therapy (SFRT) has shown incredible potential in sparing normal tissues and activating mechanisms of tumor control distinct from conventional radiotherapy. However, the optimal spatial configuration of SFRT as well as the optimal peak and valley dose values have not been established.
Coon-Haworth MR, Geise JB, Elango T, Zaugg CJ, Veenstra JL, Riffell JJ, Polkowski A, Oderinde OM, Rivera JN, Scarpelli ML.   +9 more
europepmc   +2 more sources

On the spectral changes of magna-field photon beams used in total body irradiation and impact on dosimetry. [PDF]

J Appl Clin Med Phys
Abstract Purpose Accurate dosimetry for magna fields can be challenging when dosimeters exhibit energy dependence. The aim of this work was to use Monte Carlo (MC) simulations to calculate energy spectra of magna photon fields and use the spectral information to derive energy dependence correction factors for commonly used dosimeters.
Khan AU.
europepmc   +2 more sources

Clinical test cases for commissioning, QA, and benchmarking of model-based dose calculation algorithms in ¹⁹²Ir HDR gynecologic tandem and ring brachytherapy. [PDF]

Med Phys
Abstract Purpose To develop clinically relevant test cases for commissioning Model‐Based Dose Calculation Algorithms (MBDCAs) for 192Ir High Dose Rate (HDR) gynecologic brachytherapy following the workflow proposed by the TG‐186 report and the WGDCAB report 372.
Peppa V, Robitaille M, Akbari F, Enger SA, Thomson RM, Mourtada F, Fonseca GP.   +6 more
europepmc   +2 more sources

Dose Enhancement for the Flattening-Filter-Free and Flattening-Filter Photon Beams in Nanoparticle-Enhanced Radiotherapy: A Monte Carlo Phantom Study

Nanomaterials, 2020
Monte Carlo simulations were used to predict the dose enhancement ratio (DER) using the flattening-filter-free (FFF) and flattening-filter (FF) photon beams in prostate nanoparticle-enhanced radiotherapy, with multiple variables such as nanoparticle ...
Stefano Martelli, James C L Chow
doaj   +1 more source

Muerte, muertos y “llanto” palero

Ateliers d'Anthropologie, 2013
This paper describes some of the ceremonies that make up the ritual cycles surrounding the death of palo monte priests. They are known as llanto (moaning) and I will focus on the ethnography of two of these llantos—that of a palera who was also a ...
Ana Stela de Almeida Cunha
doaj   +1 more source

A comparison of methods to harmonize cortical thickness measurements across scanners and sites

NeuroImage, 2022
Results of neuroimaging datasets aggregated from multiple sites may be biased by site-specific profiles in participants’ demographic and clinical characteristics, as well as MRI acquisition protocols and scanning platforms. We compared the impact of four
Delin Sun, Gopalkumar Rakesh, Courtney C. Haswell, Mark Logue, C. Lexi Baird, Erin N. O'Leary, Andrew S. Cotton, Hong Xie, Marijo Tamburrino, Tian Chen, Emily L. Dennis, Neda Jahanshad, Lauren E. Salminen, Sophia I. Thomopoulos, Faisal Rashid, Christopher R.K. Ching, Saskia B.J. Koch, Jessie L. Frijling, Laura Nawijn, Mirjam van Zuiden, Xi Zhu, Benjamin Suarez-Jimenez, Anika Sierk, Henrik Walter, Antje Manthey, Jennifer S. Stevens, Negar Fani, Sanne J.H. van Rooij, Murray Stein, Jessica Bomyea, Inga K. Koerte, Kyle Choi, Steven J.A. van der Werff, Robert R.J.M. Vermeiren, Julia Herzog, Lauren A.M. Lebois, Justin T. Baker, Elizabeth A. Olson, Thomas Straube, Mayuresh S. Korgaonkar, Elpiniki Andrew, Ye Zhu, Gen Li, Jonathan Ipser, Anna R. Hudson, Matthew Peverill, Kelly Sambrook, Evan Gordon, Lee Baugh, Gina Forster, Raluca M. Simons, Jeffrey S. Simons, Vincent Magnotta, Adi Maron-Katz, Stefan du Plessis, Seth G. Disner, Nicholas Davenport, Daniel W. Grupe, Jack B. Nitschke, Terri A. deRoon-Cassini, Jacklynn M. Fitzgerald, John H. Krystal, Ifat Levy, Miranda Olff, Dick J. Veltman, Li Wang, Yuval Neria, Michael D. De Bellis, Tanja Jovanovic, Judith K. Daniels, Martha Shenton, Nic J.A. van de Wee, Christian Schmahl, Milissa L. Kaufman, Isabelle M. Rosso, Scott R. Sponheim, David Bernd Hofmann, Richard A. Bryant, Kelene A. Fercho, Dan J. Stein, Sven C. Mueller, Bobak Hosseini, K. Luan Phan, Katie A. McLaughlin, Richard J. Davidson, Christine L. Larson, Geoffrey May, Steven M. Nelson, Chadi G. Abdallah, Hassaan Gomaa, Amit Etkin, Soraya Seedat, Ilan Harpaz-Rotem, Israel Liberzon, Theo G.M. van Erp, Yann Quidé, Xin Wang, Paul M. Thompson, Rajendra A. Morey   +98 more
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