2869 entries curated across talks and posters.
Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Evaluation of VMAT Grid Therapy for Bulky Tumors Using Generalized Equivalent Uniform Dose (gEUD) and Normal Tissue Objective (NTO) Optimization
Spatially fractionated radiation therapy, specifically grid radiation therapy(GridRT),is a treatment option for bulky tumors.VMAT GridRT utilizes modulated arcs to create the grid of spherical targets within the tumor.This study...
Jean L. Peng, PhD, MS
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Feasibility of Flash-Compatible Single-Energy Bragg Peak (SEBP) Proton Therapy for Hypofractionated Pancreatic Cancer
Hypofractionated proton therapy for pancreatic cancer is limited by the proximity of radiosensitive abdominal organs. Single-energy Bragg peak (SEBP) proton delivery enables ultra-high dose-rate (UHDR) irradiation and may facilit...
Jocelyn Miyo Jackson
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Impact and Robustness of Daily Online Adaptive Radiotherapy for Focal-Boosted Prostate Stereotactic Body Radiation Therapy
To evaluate dosimetric trends and robustness of online adaptive radiation therapy for focal-boosted prostate SBRT. Materials/
Jonathan Pham, PhD
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Impact of Baseline Shift Corrections during Online Adaptive Prostate Mrgrt on Elekta Unity.
Quantify dosimetric differences between original online adaptive plans (adapt-to-position [ATP] or adapt-to-shape [ATS]) and baseline shift (BLS)–corrected plans for prostate MRgRT on 1.5 Tesla MR-Linac. BLS is a fast, during tre...
Paola Godoy Scripes, MS
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Impact of Deviations from Planned Breath-Hold In Surface-Guided Liver SBRT
Surface-guided radiation therapy (SGRT) uses external surface motion as a surrogate for internal target position. While strict SGRT tolerances (typically ±1mm) are common, they may still be permissive for patients with small surf...
Tristan K. Gaddis, PhD
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Impact of Direct CBCT-Based Dose Calculation Using the Ethos Hypersight Imaging System
The purpose of this study was to characterize the dosimetric consequences of direct CBCT dose calculation for abdominal stereotactic adaptive radiotherapy by comparing dose distributions calculated on simulation CT (simCT) versus...
Meiying Xing
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Impact of Fine Dose Grid Calculations In Leksell Gamma Knife SRS
A steep dose gradient between the target and surrounding normal brain is the hallmark of Leksell Gamma Knife stereotactic radiosurgery (LGK-SRS). However, the impact of fine-dose grid calculations on dose metrics and prescription...
Parmeswaran Diagaradjane, PhD
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Impact of Hidden Input Parameters In Inverse Optimization Algorithms for GYN HDR Brachytherapy: A Systematic In-House Study
To quantify the dosimetric impact of hidden input parameters in three inverse optimization (IO) algorithms—IPSA, HIPO, and MCO—for GYN HDR brachytherapy across two applicator types.
Shiqin Su, PhD
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Impact of Interfractional Anatomical Changes In Syed HDR Brachytherapy: Is Adaptive Planning Required for Every Fraction?
To quantify the dosimetric impact of interfractional anatomical changes in Syed-based high-dose-rate (HDR) interstitial brachytherapy for locally advanced cervical cancer by comparing a single-plan (non-adaptive) versus multi-pla...
Amir M. Owrangi, PhD
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Impact of Mlc Backlash on the Csrs and SBRT Treatment Techniques.
MLC backlash is a linac failure mode that results in MLC positional error that has been demonstrated to not be prevented by the linac’s internal safety systems [1]. This study aims to inform on the clinical significance of MLC po...
Michael Paul Barnes
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Impact of Proton Variable Relative Biological Effectiveness (vRBE) In the Treatment of Ocular Cancers
Proton radiation therapy (PRT) is an effective modality for ocular cancers. Substantial evidence indicates that proton relative biological effectiveness (RBE) increases with linear energy transfer (LET). In vitro DNA double-stran...
Robert D. Stewart, PhD
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Impact of Shielding In a Co-60 HDR Cylindrical Applicator: A Geant4 Monte Carlo and Gafchromic Film Study
High-dose-rate (HDR) vaginal brachytherapy often employs shielded applicators to enhance organ-at-risk (OAR) sparing—particularly rectal protection—in cases with asymmetric tumor distribution. Although the shield thickness in cyl...
Somayeh Gholami, PhD
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Impact of Tumor Treating Field Arrays on Radiation Treatment for Locally Advanced NSCLC
A coming phase-1 study will look at feasibility and safety of Tumor-Treating-Field(TTField) arrays on treatment of locally-advanced stage III non-small cell lung cancer(NSCLC). This array maintains low-intensity alternating elect...
Ryan G. Price, PhD
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Impacts of Image Guided Radiation Therapy-Determined Clinical Shifts for Spine SBRT Patients
Stereotactic spinal treatments deliver a high radiation dose and utilize smaller target margins, on the order of 1 mm, to minimize dose to the spinal cord. Intrafraction tumor tracking is therefore essential to minimize dose outs...
Sameer Taneja
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Results for Stereotactic Radiosurgery Using a Self-Shielded Gyroscopic Radiosurgery System for Meningioma Patients
This study presents dosimetric results for stereotactic radiosurgery (SRS) using a self-shielded gyroscopic radiosurgery system for meningioma patients.
Yongsook C. Lee, PhD
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Robustness of VMAT Craniospinal Irradiation (CSI) to Rotational Setup Errors on a Ring-Based Linear Accelerator
To evaluate the dosimetric impact of rotational alignment errors on volumetric modulated arc therapy (VMAT) craniospinal irradiation (CSI), with emphasis on ring-based gantry platforms that lack rotational couch corrections. Give...
Nicholas Pierre Nelson, PhD
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Superiority of a Novel Spiral VMAT over Conventional VMAT for Hippocampal-Avoidance Whole-Brain Radiotherapy
Hippocampal-avoidance whole-brain radiotherapy (HA-WBRT) presents a dosimetric challenge in sculpting steep dose gradients to spare critical neural structures. This study evaluated a novel Spiral Volumetric Modulated Arc Therapy...
Yue Gao
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Uncertainty In Simulation-Free Radiation Therapy: A Comparative Analysis of AP/PA, 3DCRT, and VMAT Planning Techniques for Palliative Spine Patients
Simulation-free radiation therapy (SFRT) is an emerging paradigm which expedites palliative radiation by omitting a dedicated simulation computed tomography (CT) scan. This study quantifies dosimetric uncertainties associated wit...
Yuchen Jessie Jiang, BS
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Variations In Gastrointestinal Radiotherapy Using End-Expiratory Breath Hold: A Comparative Assessment of Alignrt and Identify Surface-Tracking Systems
End-expiration breath hold (EEBH) is commonly employed in GI radiotherapy to enable dose escalation while minimizing dose spillage to adjacent organs at risk. Surface-tracking systems are frequently used to support patient breath...
Teh Lin, PhD
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Verification of Real-Time Anatomy-Based Multiplane Dual Target Gating on a 0.35T MRI Linac
This work aimed to verify the dosimetric accuracy of a 0.35T MRI Linac using all five available tracking algorithms (Standard, Rigid, Small Mobile, Large Deforming, Complex Mobile) when tracking multiple targets simultaneously.
Austen N. Curcuru, PhD
Therapy Physics
0 people interested
Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetry and Response Modeling In 90y-SIRT: Impact of Monte-Carlo SPECT and Segmentation Method
Treatment planning and dosimetry in 90Y-SIRT rely on accurate determination of perfused volumes (PV). Bremsstrahlung 90Y-SPECT imaging remains limited, with poor resolution and erroneous counts throughout the imaging volume. “Gro...
Guilherme Ferreira, BS
Radiopharmaceuticals, Theranostics, and Nuclear Medicine
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetry Response Characterization of a New Developed Self-Powered Halide Perovskites Radiation Detector Under Proton Irradiation.
Halide perovskites, particularly CsPbBr3, present an exciting opportunity to overcome these limitations due to their high atomic number, fast charge transport, and exceptional radiation tolerance. While perovskite detectors have...
Fengwei Liu
Therapy Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Downsampling CT Perfusion Imaging for Pancreatic Cancer: A Blood Flow and Cell Density Analysis
Desmoplasia around pancreatic cancer reduces blood perfusion and contrast distribution volume (DV), a biomarker of cell density. This study investigates a low-frequency clinical computed tomography perfusion (CTP) protocol to qua...
Zainab Zahra, BSc
Diagnostic and Interventional Radiology Physics
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Poster
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dual Method Quantitative QA for Head and Neck Offline Adaptive Radiotherapy Utilizing Transmission Portal Dosimetry and Contour-Based Assessment
Adaptive radiotherapy (ART) for head and neck (HN) cancer helps maintain target coverage and spare organs-at-risk (OARs) despite anatomical changes like weight loss. For clinics without online ART, early identification of patient...
Caroline Elizabeth Serafini
Therapy Physics
0 people interested