2869 entries curated across talks and posters.
Poster
GPD-T-67
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
DIM-Free Monte-Carlo–Integrated Planning Optimization Using Randomized-Gradient-Free-Method (RGFM) for MCF Mkm Rbe Dose In Carbon Ion Therapy
The Mayo Clinic Florida microdosimetric kinetic model (MCF MKM) provides highly accurate relative biological effectiveness (RBE) calculations for carbon ion radiation therapy (CIRT), but its clinical use is limited by extreme mem...
Bo Lu, PhD
Therapy Physics
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Poster
GPD-T-768
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Direct Comparison between an Automated Deep Learning KBP Pipeline and Rapidplan In Lung SBRT
Stereotactic body radiotherapy (SBRT) plays a central role in the management of early-stage and oligometastatic lung cancer. Over recent years, there has been significant interest in automating treatment planning through the deve...
Edward Wang, PhD
Therapy Physics
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Poster
GPD-T-322
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Direct Dose Correction and Auto-Segmentation on CBCT for Adaptive Radiotherapy with Uncertainty Quantification
CBCT is essential for daily anatomy assessment in ART, but artifacts and unstable HUs impair dose accuracy, and existing corrections or sCT add uncertainties. This study introduces a unified framework for direct CBCT dose correct...
Ali Faisal
Therapy Physics
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Poster
GPD-R-51
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Direct-Time Resolved Measurement of DNA Strand Scission Reactions from 225ac
We present advancements of single-molecule biodosimetry to measure radiation-induced DNA damage from α-emitting 225Ac. These results will be compared to β-emitting radionuclides to assess relative biological effectiveness (RBE) f...
Joseph W. Robertson, PhD
Radiopharmaceuticals, Theranostics, and Nuclear Medicine
0 people interested
Poster
GPD-T-1007
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Discrete-STEP Proton ARC Therapy: A Phantom-Based Planning and Dosimetric Feasibility Study
This study aims to evaluate the planning feasibility and dosimetric performance of a discrete-step proton arc (DSPAT) using a standardized head phantom on an IBA Proteus Plus proton therapy system.
Manimala Konthoujam, Medical Physicist
Therapy Physics
0 people interested
Poster
GPD-T-1006
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Distance-to-Contour Conditioned Coregistration for Pancreatic Cancer RT
Longitudinal deformable registration is crucial for accurate dose accumulation in magnetic resonance guided adaptive radiotherapy (MRgART). This is particularly difficult for pancreatic cancer, with both substantial inter-fractio...
Josiah Simeth, PhD
Therapy Physics
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Poster
GPD-T-911
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Does Breathing Motion Change Weeks to Years after Treatment?
A CT-simulation approach has been developed which images free breathing patients with lung tumors by generating a motion model that is a function of breathing amplitude and rate (5DCT). Of the >300 patients simulated with 5DCT, 1...
Daniel A. Low, PhD
Therapy Physics
0 people interested
Poster
GPD-T-446
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Does Suppressing Inflammation Response In Lung Radiotherapy Protect the Lung Cancer Cells?
Radiation-induced lung injury, characterized by chronic inflammation and fibrosis, limits the dose we can give in lung cancer radiotherapy. Drugs that block this response have been shown to protect normal lung tissues from radiat...
Garrett Kirk, BSc
Therapy Physics
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Poster
GPD-T-715
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Do Rectal Proton Therapy Plans Require Adaptation for Rectal Gas Variability?
Rectal gas variability introduces density heterogeneities that may compromise dose robustness in rectal proton therapy and affect bladder and bowel dosimetry. This study evaluates the impact of rectal gas variability on target co...
Anthony Austin Kassaee, MS
Therapy Physics
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Poster
GPD-D-54
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dose Efficient Low-Contrast Detectability In CT: Multi-Vendor Benchmarking and Time-Efficient Workflow In Clinical Set-Ups
Use of task-based detectability index (d’) enables comparison of phantom-patient image quality in a clinically meaningful and vendor-agnostic manner, incorporating resolution details and noise characteristics beyond CNR. Measurin...
Jackson Herb, MS
Diagnostic and Interventional Radiology Physics
0 people interested
Poster
GPD-T-275
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dose-Gated LET Modulation of Mandibular Osteoradionecrosis In Proton Therapy Revealed By Iso-Risk Interaction Space
Dose–volume metrics alone incompletely explains mandibular osteoradionecrosis (ORN) following proton therapy. LET-based aggregate approaches such as dose–LET volume histograms (DLVH) implicitly assume uniform LET contribution acr...
Dong Han, PhD
Therapy Physics
0 people interested
Poster
GPD-T-131
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dose–LET Interactions Predict Capsular Contracture after Proton Postmastectomy Radiation Therapy
Pencil beam scanning (PBS) proton therapy provides highly conformal dose distributions that are increasingly leveraged for postmastectomy radiation therapy (PMRT) to reduce cardiopulmonary exposure. However, implant-based reconst...
Wei Liu, PhD
Therapy Physics
0 people interested
Poster
GPD-T-321
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dose-LET Volume Histogram Markers of Genitourinary Toxicity In Proton Prostate SBRT
Proton prostate SBRT is characterized by steep dose gradients and elevated linear energy transfer (LET) near the end of range, which may contribute to genitourinary (GU) toxicity. Prior work suggests that bladder neck (trigone) d...
Duncan Henry Bohannon, PhD
Therapy Physics
0 people interested
Poster
GPD-T-230
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Analysis for a Modern 131 Cs Brachytherapy Seed
Conventional LDR brachytherapy seeds rely on internal radiopaque markers that were incorporated to enhance radiographic visibility. With widespread adoption of modern 3D imaging modalities such as CT, the marker presence degrades...
Alana Corinne Pankopf
Therapy Physics
0 people interested
Poster
GPD-T-1005
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Benefits of Hybrid CT-Guided Adaptive Radiotherapy for Pelvic Malignancies
To quantify organ-at-risk (OAR) sparing achievable using a hybrid approach combining conventional image-guided radiotherapy (IGRT) with a CT-guided online adaptive radiotherapy (CT-ART) cone-down boost for pelvic malignancies.
Antonia Emilia Kubiatowicz, PhD, MS
Therapy Physics
0 people interested
Poster
GPD-T-741
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Comparison between Hydrogel and Liquid-Filled Rectal Spacers In Proton Beam Therapy for Primary Prostate Cancer
Implanted spacers can improve rectal sparing in prostate radiation therapy. Several systems are commercially available, including hydrogel and liquid-filled balloon variants. Here, we perform an initial dosimetric evaluation of r...
Clayton Fry
Therapy Physics
0 people interested
Poster
GPD-T-962
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Comparison between Sgrt- and Rpm-Based Dibh APBI for Left-Sided Breast Patients
Accurate breath-hold reproducibility is critical in left-sided breast irradiation to reduce cardiac and lung dose, and differences in motion management techniques may influence delivered dose accuracy. The purpose of this study i...
Michael Correa
Therapy Physics
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Poster
GPD-T-274
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Comparison of Cervix Boost RT with CBCT-Based Adaptive Versus Non-Adaptive Instead of Brachy Boost
Brachytherapy (BT) remains the standard modality for dose escalation in cervical cancer boost targets, with well-established high-dose-rate (HDR) EQD2 constraints based on HR-CTV D90 and organ-at-risk (OAR) D2cc metrics. However,...
Maida Ranjbar
Therapy Physics
0 people interested
Poster
GPD-T-1004
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Comparison of High Dose Rate Interstitial Brachytherapy and Stereotactic Body Radiotherapy As Alternative Treatment Methods for Advanced-Stage Cervical Cancer
High-dose-rate interstitial brachytherapy (HDR-IBT) is an essential component of curative treatment for locally advanced cervical cancer (LACC), but it is invasive and resource-intensive. Alternative boost techniques are needed w...
Rui Zhang, PhD
Therapy Physics
0 people interested
Poster
GPD-T-97
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Comparison of Lattice Radiation Therapy Plans Using Varian C-Arm Linacs and Radixact Tomotherapy.
This study compares the dosimetric treatment plan quality of Lattice Radiation Therapy plans generated on Varian C-arm LINACs (TrueBeam and Edge) and Radixact TomoTherapy.
Muhammad Mansoor Khan, M.S.
Therapy Physics
0 people interested
Poster
GPD-T-1068
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Comparison of Proton Therapy Plans Calculated Using Fast Kv Switch Dual Energy CT Versus Single Energy CT
Dual energy CT (DECT) has been demonstrated to more accurately predict relative stopping power (RSP) for proton therapy planning over the conventional method of HU-RSP conversion using single energy CT (SECT). In this study, trea...
Hazel Wang, MS
Therapy Physics
0 people interested
Poster
GPD-T-910
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Considerations for VMAT Total Body Irradiation In Adult Patients
Total body irradiation (TBI) is a key component of myeloablative conditioning before hematopoietic stem cell transplantation. Modern TBI techniques are increasingly moving towards multi-isocentric VMAT approaches to improve dose...
Dan Morton
Therapy Physics
0 people interested
Poster
GPD-T-846
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Effects of Adaptive Gynecological HDR Brachytherapy Planning on a per-Fraction Versus per-Implant Basis
HDR gynecologic brachytherapy can involve creating a new plan for each fraction of treatment or delivering a single plan for both fractions of an implant. This work retrospectively analyzes the differences in EQD2 doses to the CT...
Stephanie Tan, MS
Therapy Physics
0 people interested
Poster
GPD-T-845
Poster Program
Exhibit Hall | Poster Lounge
Jul 19 · 15:15
Dosimetric Evaluation of Shielding In Partial-Body Rotational Total Skin Electron Therapy
Total Skin Electron Therapy (TSET) treats cutaneous lymphomas and other superficial malignancies by delivering a uniform electron dose over the skin. Partial-body rotational TSET requires shielding of critical structures, but con...
Maduka M. Kaluarachchi, PhD
Therapy Physics
0 people interested