Digital twin creation of a proton therapy treatment environment with hybrid LiDAR and RGB 3D camera: Abstract

Introduction

This study evaluates the feasibility of utilizing a commercial-grade 3D LiDAR/RGB camera, combined with 3D reconstruction software, to create an accurate and hyper-realistic digital model of a proton therapy treatment room. This reconstructed model aims to enhance collision avoidance strategies and improve 3D machine model… https://aapm.onlinelibrary.wiley.com/doi/10.1002/acm2.70231?af=R&utm_source=dlvr.it&utm_medium=mastodon #JACMP

Application of a model‐based water‐equivalent EPID image conversion algorithm for linac beam QA: Abstract

Purpose

The nonwater-equivalent energy response of electronic portal imaging devices (EPIDs) is a major obstacle to using them for linear accelerator (linac) beam parameter verification. In this study, we propose an EPID-based machine quality assurance (QA) application that uses a model-based radiation transport algorithm to convert EPID-measured… https://aapm.onlinelibrary.wiley.com/doi/10.1002/acm2.70210?af=R&utm_source=dlvr.it&utm_medium=mastodon #JACMP

A novel Cherenkov radiation removal method for plastic scintillator detectors in a 0.35 T MR‐Linac: Abstract

Purpose

This study evaluates methods for removing Cherenkov radiation (CR) from plastic scintillation detectors (PSDs), focusing on constraints specific to a 0.35 T MR-Linac system.

Methods

Five CR-removal methods were examined: cross calibration, fiber alone, multiloop, collimator rotation, and couch rotation. The first three (cross… https://aapm.onlinelibrary.wiley.com/doi/10.1002/acm2.70202?af=R&utm_source=dlvr.it&utm_medium=mastodon #JACMP

Dosimetric and robustness evaluation of biaxially rotational dynamic radiation therapy with robust optimization: Abstract

Background

Studies suggest that integrating robust planning and noncoplanar volumetric modulated arc therapy (VMAT) may be a useful strategy for maximizing the benefits of dose delivery while maintaining resilience to uncertainty; however, the robustness of target coverage and the dose-sparing performance for organs at risk of… https://aapm.onlinelibrary.wiley.com/doi/10.1002/acm2.70194?af=R&utm_source=dlvr.it&utm_medium=mastodon #JACMP

A novel method to simulate radiographs of 3D printed objects: Abstract

Background

3D printing has a number of applications within medicine and healthcare. In applications involving radiography, the internal infill structure and external geometry of a 3D printed part can produce undesirable artifacts, limiting the full potential of 3D printing as a manufacturing technology. While the mechanical performance of a 3D printed part can be easily simulated, it is… https://aapm.onlinelibrary.wiley.com/doi/10.1002/acm2.70159?af=R&utm_source=dlvr.it&utm_medium=mastodon #JACMP

Tumor‐driven SRS VMAT planning: Regression models for intermediate and low dose spillage: Abstract

Purpose

Stereotactic radiosurgery (SRS) for brain metastases using volumetric modulated arc therapy (VMAT) is increasingly utilized. While high-dose conformity guidelines relative to tumor volume exist, recommendations for intermediate and low-dose regions remain undefined. This study explores tumor-specific characteristics and new dosimetric parameters to… https://aapm.onlinelibrary.wiley.com/doi/10.1002/acm2.70184?af=R&utm_source=dlvr.it&utm_medium=mastodon #JACMP

A streamlined workflow for comprehensive 4DCT imaging QA with automated analysis of spatial integrity and image quality: Abstract

Purpose

A comprehensive 4DCT QA program that includes the assessment of spatial integrity and image quality of 4D phantom scans can be resource-intensive, especially because the analysis burden scales with the number of motion traces used for QA. This work presents a streamlined and scalable workflow, enabled by the use of a… https://aapm.onlinelibrary.wiley.com/doi/10.1002/acm2.70168?af=R&utm_source=dlvr.it&utm_medium=mastodon #JACMP

Classification performances of two diode arrays for patient‐specific quality assurance of stereotactic body radiation therapy treatments based on absolute dose measurements in phantom: Abstract

Background

Despite the rapid growth in the clinical practice, no specific recommendations on pre-treatment patient-specific quality assurance of volumetric modulated arc therapy-based stereotactic body radiation therapy plans have been established.

Purpose

In… https://aapm.onlinelibrary.wiley.com/doi/10.1002/acm2.70167?af=R&utm_source=dlvr.it&utm_medium=mastodon #JACMP

Non‐compliant neutron dose associated with an internal lead slab in a radiotherapy treatment vault: Abstract

Background

In high energy radiotherapy treatment vaults, photoneutrons can be produced by direct photon interactions with barrier materials and have a mean energy of approximately 20% of the nominal photon energy. Excess photoneutrons outside a treatment vault are always a concern due to their significant radiobiological efficacy, or Q value.… https://aapm.onlinelibrary.wiley.com/doi/10.1002/acm2.70182?af=R&utm_source=dlvr.it&utm_medium=mastodon #JACMP