Facundo Ballester
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View article: Reference datasets for commissioning of model‐based dose calculation algorithms for electronic brachytherapy
Reference datasets for commissioning of model‐based dose calculation algorithms for electronic brachytherapy Open
Purpose This work provides the first two clinical test cases for commissioning electronic brachytherapy (eBT) model‐based dose calculation algorithms (MBDCAs) for skin irradiation using surface applicators. Acquisition and Validation Metho…
View article: Dosimetric impact of physics libraries for electronic brachytherapy Monte Carlo studies
Dosimetric impact of physics libraries for electronic brachytherapy Monte Carlo studies Open
Background Low‐energy x‐ray beams used in electronic brachytherapy (eBT) present significant dosimetric challenges due to their high depth‐dose gradients, the dependence of detector response on materials, and the lack of standardized dose‐…
View article: An efficient component of the redundancy calibration program to ensure equipment stability by assaying HDR Ir‐192 sources at the time of replacement
An efficient component of the redundancy calibration program to ensure equipment stability by assaying HDR Ir‐192 sources at the time of replacement Open
Background Brachytherapy (BT) treatments involving temporary high‐dose rate (HDR) sources are extensively employed in clinical practice. Ensuring the consistency of all measurement equipment at the hospital level is crucial, requiring a ro…
View article: Dosimetry of Large Field Valencia applicators for Cobalt‐60‐based brachytherapy
Dosimetry of Large Field Valencia applicators for Cobalt‐60‐based brachytherapy Open
Background Non‐melanoma skin cancer is one of the most common types of cancer and one of the main approaches is brachytherapy. For small lesions, the treatment of this cancer with brachytherapy can be done with two commercial applicators, …
View article: Characterization of Plastic Scintillator Detector for In Vivo Dosimetry in Gynecologic Brachytherapy
Characterization of Plastic Scintillator Detector for In Vivo Dosimetry in Gynecologic Brachytherapy Open
(1) Background: High dose gradients and manual steps in brachytherapy treatment procedures can lead to dose errors which make the use of in vivo dosimetry (IVD) highly recommended for verifying brachytherapy treatments. A new procedure was…
View article: Generation and comparison of 3D dosimetric reference datasets for COMS eye plaque brachytherapy using model‐based dose calculations
Generation and comparison of 3D dosimetric reference datasets for COMS eye plaque brachytherapy using model‐based dose calculations Open
Purpose A joint Working Group of the American Association of Physicists in Medicine (AAPM), the European Society for Radiotherapy and Oncology (ESTRO), and the Australasian Brachytherapy Group (ABG) was created to aid in the transition fro…
View article: AAPM WGDCAB Report 372: A joint AAPM, ESTRO, ABG, and ABS report on commissioning of model‐based dose calculation algorithms in brachytherapy
AAPM WGDCAB Report 372: A joint AAPM, ESTRO, ABG, and ABS report on commissioning of model‐based dose calculation algorithms in brachytherapy Open
The introduction of model‐based dose calculation algorithms (MBDCAs) in brachytherapy provides an opportunity for a more accurate dose calculation and opens the possibility for novel, innovative treatment modalities. The joint AAPM, ESTRO,…
View article: A User-Friendly System for Mailed Dosimetric Audits of 192Ir or 60Co HDR Brachytherapy Sources
A User-Friendly System for Mailed Dosimetric Audits of 192Ir or 60Co HDR Brachytherapy Sources Open
Objectives: The main goal of this work is to design and characterize a user-friendly methodology to perform mailed dosimetric audits in high dose rate (HDR) brachytherapy for systems using either Iridium-192 (192Ir) or Cobalt-60 (60Co) sou…
View article: Evaluation of dosimetric effects of metallic artifact reduction and tissue assignment on Monte Carlo dose calculations for <sup>125</sup>I prostate implants
Evaluation of dosimetric effects of metallic artifact reduction and tissue assignment on Monte Carlo dose calculations for <sup>125</sup>I prostate implants Open
Purpose Monte Carlo (MC) simulation studies, aimed at evaluating the magnitude of tissue heterogeneity in 125 I prostate permanent seed implant brachytherapy (BT), customarily use clinical post‐implant CT images to generate a virtual repre…
View article: In Vivo Verification of Treatment Source Dwell Times in Brachytherapy of Postoperative Endometrial Carcinoma: A Feasibility Study
In Vivo Verification of Treatment Source Dwell Times in Brachytherapy of Postoperative Endometrial Carcinoma: A Feasibility Study Open
(1) Background: In brachytherapy, there are still many manual procedures that can cause adverse events which can be detected with in vivo dosimetry systems. Plastic scintillator dosimeters (PSD) have interesting properties to achieve this …
View article: A study of Type B uncertainties associated with the photoelectric effect in low-energy Monte Carlo simulations
A study of Type B uncertainties associated with the photoelectric effect in low-energy Monte Carlo simulations Open
Purpose. To estimate Type B uncertainties in absorbed-dose calculations arising from the different implementations in current state-of-the-art Monte Carlo (MC) codes of low-energy photon cross-sections (<200 keV). Methods. MC simulations a…
View article: Surface brachytherapy: Joint report of the AAPM and the GEC‐ESTRO Task Group No. 253
Surface brachytherapy: Joint report of the AAPM and the GEC‐ESTRO Task Group No. 253 Open
The surface brachytherapy Task Group report number 253 discusses the common treatment modalities and applicators typically used to treat lesions on the body surface. Details of commissioning and calibration of the applicators and systems a…
View article: Determination of consensus kQ values for megavoltage photon beams for the update of IAEA TRS-398
Determination of consensus kQ values for megavoltage photon beams for the update of IAEA TRS-398 Open
The IAEA is currently coordinating a multi-year project to update the TRS-398 Code of Practice for the dosimetry of external beam radiotherapy based on standards of absorbed dose to water. One major aspect of the project is the determinati…
View article: Depth-dose measurement corrections for the surface electronic brachytherapy beams of an Esteya<sup>®</sup> unit: a Monte Carlo study
Depth-dose measurement corrections for the surface electronic brachytherapy beams of an Esteya<sup>®</sup> unit: a Monte Carlo study Open
Three different correction factors for measurements with the parallel-plate ionization chamber PTW T34013 on the Esteya electronic brachytherapy unit have been investigated. This chamber type is recommended by AAPM TG-253 for depth-dose me…
View article: Determination of consensus <i>k</i> <sub> <i>Q</i> </sub> values for megavoltage photon beams for the update of IAEA TRS-398
Determination of consensus <i>k</i> <sub> <i>Q</i> </sub> values for megavoltage photon beams for the update of IAEA TRS-398 Open
The IAEA is currently coordinating a multi-year project to update the TRS-398 Code of Practice for the dosimetry of external beam radiotherapy based on standards of absorbed dose to water. One major aspect of the project is the determinati…