meetings
A Case Study: Application of 3D Printed Thermoplastic Polyurethane Filament Bolus Device for Enhanced Radiation Therapy Delivery
Authors: Sining Chen, BS, CMD; Andrew Lukban, MSc, DABR; Jiahan Zhang, PhD, DABR, Tian Liu, PhD, DABR; VishalGupta, MD
Poster Summary: The case study examines the potential benefits and practicality of using 3D printed devices as a complicated bolus in radiation therapy treatments.
A Comparative Analysis of Dosimetric Effects: Reusing vs. Generating New Dwell Times in Ring and Tandem HDR Treatment Simulations
Author: Brandy Kossow, RT(R)(T)
Poster Summary: Exploring the impact of reusing dwell times in ring and tandem high-dose radiation procedures for improved efficiency and dosimetric outcomes.
A Dosimetric Analysis of Volumetric Arc Therapy for Whole Brain Hippocampal Sparing technique comparing hyper-flexion versus neutral neck position
Author: Allison Kraus, BS, RT(R)(T)(M)(CT)
Poster Summary: Study assessing impact of head tilt (neutral versus 30 degree) for HA-WBRT planning, for optimizing dose reduction to the hippocampi, aiming to enhance neurocognitive outcomes.
A Dosimetric Comparison of 6MV and 10MV Beam Energies for Adrenal SBRT
Authors: Mariel Lewis, BSRT(T); Sarah Johnson, MS, CMD
Poster Summary: This study compares 6MV and 10MV beams for adrenal SBRT, optimizing target coverage and organ sparing to enhance treatment precision and safety in radiation therapy.
Adaptive MR-Guided 2 Dose Level Pancreas SABR planning: GenesisCare UK experience
Authors: Ebison Chinherende, CMD
Poster Summary: Despite the radio-resistant nature of pancreatic cancer, and the ubiquitous presence of highly radio-sensitive organs at risk such as duodenum that makes treatment planning for these cases challenging, robust; BED?? (α/β = 10) ≥ 100Gy; conformal pancreas SABR plans are achievable using an Adaptive MR-Guided Radiotherapy platform, improving chances of disease control.
Anatomic and Dosimetric Comparison of Photon-based Supine and Proton-based Upright treatments for Prostate Cancer Patients
Authors: Daniel Pham, Ph.D., CMD; Nataliya Kovalchuk, PhD, DABR; Jonathan Lewis, CMD; Nick Nguyen, CMD; Yong Yang, PhD, DABR; Serdar Charyyev, PhD, DABR.
Poster Summary: MEVION S250-FIT is an ultra-compact proton therapy system that features a horizontal proton beam coupled to an upright patient positioning system. This is a planning study comparing anatomical and dosimetric differences between proton-based upright treatment vs photon-based supine treatment for prostate cancer.
Assessment of Plan Quality in an Automated Treatment Planning Workflow Using Auto-Segmentation and Knowledge-Based Planning for Prostate SBRT
Authors: Trisha Jones, MS; Pretesh Patel, MD; Justin Roper, PhD; Kirk Luca, MS; Mingdong Fan, PhD; Jie Ding, PhD
Poster Summary: We explore a prostate SBRT treatment planning workflow using AI auto-segmentation and knowledge-based planning, showing promising results when combining physician-delineated targets with post-processed AI contours.
Case Study Examination of the Impact of Hounsfield Unit Override in the Eclipse Treatment Planning System
Authors: Brandon Chykirda, BS; Marissa Vaccarelli, MS, DABR; Gina Goode, CMD
Poster Summary: To examine case studies in which different Hounsfield Unit (HU) values are introduced to assess the treatment area of interest.
Case Study: Innovative Spot Delete Method for Spinal Cord Treatment
Authors: Avril O'Ryan-Blair, BS, DBM, CMD; Samantha Hedrick, PhD, DABR
Poster Summary: This case study shows the results of an innovative spot delete method to remove spots from the previously treated spinal cord of a patient, reducing high LET and mitigating RBE uncertainty. This approach highlights the novelty and effectiveness of using beam-specific spot deletion in complex cases involving spinal hardware and previously irradiated regions.
Comparative Dose Accuracy of AlignRT and ExacTrac in Non-Coplanar Brain SBRT on a Varian Edge: A Phantom Study
Authors: Tyler Lowe, BS; Mahsa Dehghanpour, EdD, MS, CMD; Mike Campbell, MS, PhD
Poster Summary: ExacTrac and AlignRT demonstrated comparable dose delivery accuracy in non-coplanar brain SBRT, with AlignRT showing potential for superior stability.
Comparing Dosimetric Outcomes of Static IMRT and VMAT in Accelerated Partial Breast Irradiation for Medially Located Tumor Beds
Authors: Rani Jamil, MS; Brian Loughery, PhD, DABR; Kristen Vu, MS
Poster Summary: We compare static IMRT and VMAT for medial APBI, evaluating dosimetric outcomes to determine the optimal technique for target coverage, dose homogeneity, and organ-at-risk sparing.
Comparison of normal tissue toxicity and target coverage robustness of two simultaneous integrated boost planning techniques for cervical cancer with positive lymph nodes
Authors: Alma Escobar, RT(R)(MRI)(ARRT), Sahar Fahmy, BS, Melanie Little, BS; Yoana Pineda, BS; Zukhruf Saeed, BS; Pamela Myers, PhD; Hamza Syed, MS, CMD; Sandy Thang, CMD; Christopher Spicer, CMD; Lori Simmons, MS, CMD; Zhiqian Yu, PhD
Poster Summary: Comparison of homogeneous and heterogeneous SIB techniques shows both have trade-offs, but heterogeneous plans offer better robustness and reduce normal tissue dose.
Comparison of Photon and Proton-based Lattice Radiation Therapy for the Treatment of Bulky Liver Cancer
Authors: Miguel Aguilar, BA; Carlos Matias; Adrian Delgado, BS; Jamie Baker, PhD, MEd, CMD; Joshua Niedzielski, PhD; Yuting Li, PhD; Rachael M., Martin Paulpeter, PhD; Laurence Court, PhD; Christine Chung, MS
Poster Summary: Compared photon and proton-based LRT for bulky liver tumors, finding proton planning superior due to comparable coverage and improved normal tissue sparing in our cohort.
Comparison of Physician vs. AutoContour Drawn LAD Contours: A Geometric and Dosimetric Analysis in Left Sided Breast Cancer Patients
Authors: John Hastings, MSc, CMD
Poster Summary: Investigating the robustness of autocontouring tools on delineating the Left Anterior Descending Artery (LAD) and evaluating their dosimetric impact in left sided breast cancer patients.
Comparison of Rings versus Dose Specific Structures for Pancreatic SBRT using RapidPlan
Authors: Victoria Olsen, BS, CMD; Jennifer Chen, BS; Andrew Lin,BS; Maria Dimopoulos, PhD, MBA, RT(T); Vishruta Dumane, PhD, DABR
Poster Summary: Authors utilize a knowledge-based planning model to identify the advantages and disadvantages of ring structures versus dose specific structures in planning pancreas SBRT.
Craniopharyngioma Proton Plans: Evaluating Addition of Eclipse NTO to Ring-OnlyOptimization
Authors: Sarah Johnson, CMD
Poster Summary: Incorporating NTO in proton therapy for craniopharyngiomas improves dose conformity and normal tissue sparing while maintaining target coverage and robustness but increases dose heterogeneity.
Developing Dye based Radio-chromic Dosimeters for Medical and Environmental applications
Authors: Hagos Tesfay Medhin, PhD; Carlos F. O. Graeff, PhD; Teketel Yohannes Anshebo, PhD; Negussie Megersa, PhD; Erika Soares Bronze-Uhle, PhD; Augusto Batagin Neto, PhD
Poster Summary: The turmeric dye curcumin solution in chloroform was investigated spectrophotometrically and spectrofluorometrically for its dosimetric characteristics for low dose dosimetry. The results of our studies show curcumin dye solution in chloroform shows a promising response for low dose dosimetry in the range between 0 to 30 Gy.
Development and Implementation of ESAPI Scripting for Standardization and Efficiency in the Medical Dosimetry Clinical Workflow
Authors: Noufal Manthala Padannayil, PhD; Suresh Rana, PhD; Shyam Pokharel, PhD; Somol Mariam Suny, BS; Rachel Jacques, BS; Michael Kasper, MD
Poster Summary: This study developed and tested ESAPI-based C# scripts to automate contouring, optimization, and planning, improving efficiency and standardization in Eclipse TPS for medical dosimetry.
Development and Validation of a RapidPlan Model for Streamlining Clinical VMAT Craniospinal Irradiation Planning
Authors: Amar-Pal Romana, MS; Kundan Thind, PhD; Kyle Verdecchia, PhD; Stephen Gardner, MS; Svetlana Rousse, BS; Karen Snyder, MS
Poster Summary: To improve the efficiency of the computational time for Total Craniospinal Irradiation using Volumetric Modulated Arc Therapy, an in-house RapidPlan model was created and validated.
Diagnostic Image-based Radiation Therapy Planning without Adaptation for Non-Small Cell Lung Cancer (NSCLC) Patients
Authors: Joshua Langer, BS, RT(T)
Poster Summary: A retrospective research project examining whether a current worldwide trend, diagnostic CT-based planning, could improve the experience for non-small cell lung cancer patients."
Dosimetric Comparison of Hypofractionation with Concomitant Boost versus Sequential Boost following Breast-Conserving Surgery in Early-Stage Breast Cancer Patient
Authors: Hanaan Habibulla, MS; Joy Ogunmuyiwa, MD; Hani Ashamalla, MD; Onyinye Balogun, MD
Poster Summary: Comparing hypofractionated breast boost techniques-concomitant boost and sequential boost using conformity index, homogeneity index, and gradient index in breast cancer patients who have undergone breast-conserving surgery.
Dosimetric Comparisons for Determining Optimal Arc Geometry in Multi Target Thoracic VMAT SBRT Treatment Plans for Patients with Locally Advanced Inoperable NSCLC
Authors: Alexandrea Reeves, BS, RT(T); Jacob Belardo, MS, DABR
Poster Summary: To determine if non-coplanar volumetric modulated arc therapy (VMAT SBRT) arcs provide a clinically significant dose sparing to OARs without sacrificing the plan quality or target coverage in multi target thoracic VMAT SBRT plans for patients with locally advanced in operable NSCLC.
Dosimetric Comparisons of 6MV, 6 FFF, 10MV, and 10FFF on VMAT Planning in Patients with Endometrial Cancer
Authors: Madisin DePas, BSRS, RT(R)(T); Mubin Shaikh, PhD, DABR
Poster Summary: This study evaluates the dosimetric impact of different flattened and unflattened photon beam energies in VMAT for endometrial cancer, highlighting efficiency, target coverage, and OAR sparing.
Dosimetric Impact of Different Bladder Volumes on Sparing Organs at Risk in CT-based Cervix HDR Brachytherapy
Authors: Lisa Moeller, BS; Frederique Kemogne Tamo, BS; Abel Thomas, BS; Lori Simmons, MS, CMD; Mandy Cunningham, BS, CMD; Yusung Kim, PhD, DABR, FAAPM
Poster Summary: Bladder volume significantly affects bladder dose in cervix HDR brachytherapy, with an optimal range of 73–100 mL, minimizing dose and maintaining effective treatment outcomes.
Dosimetric Study of Radiation Therapy in the Region of Stabilized Spine
Authors: Tomas Prochazka, MSc; Jan Cienciala, MD, PhD; Jan Garcic, MSc; Miroslav Stavik, MSc
Poster Summary: This study investigates the impact of titanium and carbon fiber spinal implants on dose calculation accuracy and CT artifacts in radiotherapy.
Effects of Inconsistent Bladder and Rectal Preparation on Seminal Vesicle Target Coverage When Treating Intermediate Risk Prostate Patients with Proton Therapy
Authors: Shae Gans, AAS; Ashley Shanahan, BS
Poster Summary: Effects of Inconsistent Bladder and Rectal Preparation on Seminal Vesicle Target Coverage When Treating Intermediate Risk Prostate Patients with Proton Therapy
Efficiency, Quality, and Clinical Perception of Single-Click Automated Prostate Planning
Authors: Allison Dalton, MSHA, CMD RT(T); Joseph Harms, PhD; Richard Popple, PhD.; Rex Cardan, PhD; Melissa Tyler, MS, CMD, RT (R)(CT)(T); Andrew McDonald, MD; Carlos Cardenas, PhD
Poster Summary: A fully automated, iterative KBP-based planning tool produced clinically acceptable prostate RT plans, highlighting differences in physician and dosimetrist perception and the need for further evaluation.
Evaluate MRCAT as a surrogate for traditional CT simulation in proton prostate radiotherapy planning
Authors: Karen Weeks, BS, RT(R)(T); George Arnold, CMD
Poster Summary: This study assesses MRCATs feasibility as a CT surrogate in proton prostate therapy by comparing dose distribution, target coverage, HU values, and the potential of MRI-only workflows.
Evaluation of Beam Arrangements for Anal Canal Treatment Using Proton Pencil Beam Scanning
Authors: Ariel Hoang, RT(R); Josie Ruzek, BS, MS; Jamie Baker, PhD, MEd, CMD; Mahsa Dehghanpour, EdD, MS, CMD; Rachael M. Martin Paulpeter, PhD; Joshua Niedzielski, PhD; Sam Beddar, PhD; Gabriel O. Sawakuchi, PhD; Emma B. Holliday, PhD, MD; Luis A. Perles, PhD
Poster Summary: This poster describes a retrospective study on the dosimetric impact of varying beam arrangements for pelvic intensity modulated proton therapy.
Exploring the Interplay Effect: A Comparison of GTV dose calculation in SBRT Lung Treatment Plans Using Conformal Arc and VMAT Techniques with Robust Evaluation
Authors: Aabroo Sohail, BS; Mahsa Dehghanpour, EdD; and William N. Duggar, PhD
Poster Summary: This study compares conformal arc and VMAT techniques for lung SBRT, finding no significant difference in GTV dose calculation, but suggesting further research on the interplay effect.
First Investigation on the Dosimetric Perturbation due to the Dental Implants in Spot-Scanning Proton Arc (SPArc) Therapy Planning Strategies
Authors: Evan Harbert, MS; Xuanfeng Ding, PhD, DABR
Poster Summary: Investigation of the dosimetric perturbation due to uncertainties caused by dental implants in Spot-Scanning Proton Arc (SPArc).
HyperArc SRS: A Study of Multi-Lesion Dose Conformity
Authors: Braylon Madison, BS; Kirk Luca, MS; Hui-Kuo Shu, MD, PhD; Lisa Sudmeier, MD, PhD; Jim Zhong, MD; Bree Eaton, MD; Matthew Thomas, MS; Eduard Schreibmann, PhD; Xiaofeng Yang, PhD; Justin Roper, PhD
Poster Summary: Dose conformity in HyperArc SRS decreases with smaller targets, increased target-to-isocenter distance, and multiple targets, impacting precision.
Impact of Modesty Coverings on Isocenter Dose and Surface Dose in Hypo fractionated Breast Treatment (HFRT)
Authors: Christopher Cofer, RT(R)(T)
Poster Summary: This study examines the impact of modesty coverings on isocenter dose and surface dose in HFRT, analyzing potential dose variations introduced by different covering materials. Dosimetric measurements and treatment planning data are evaluated to assess changes in dose distribution, providing insights into the interaction between modesty coverings and radiation delivery.
Multicriteria Optimization Treatment Planning for Lung Cancer Radiotherapy: Preliminary Study for MCO-based Auto-Planning
Authors: Minas Semaie, BS, AS, RT(T); Kai Huang, PhD; Kai Wang, PhD; Mariana Guerrero, PhD; Ajay Banskota, BS, AS, RT(T), CMD; Erica Fisler, BS, CMD
Poster Summary: This study demonstrates the feasibility of using MCO for VMAT lung planning and its ability to generate clinically acceptable plans with minimal user interference.
Pilot Study on Normal Organ Dose Reduction using Online Adaptive Radiotherapy for High-Dose-Rate Intracavitary-Interstitial Brachytherapy
Authors: Lauren Tressel, CMD, RT(T); Megan Criscuolo, CMD, RT(T); Mary-Kate Lawlor, MD; John Kim, CMD; Shari Damast, MD; Adam Shulman, MS; David Carlson, PhD; Zhe Chen, PhD; Chris Tien, PhD
Poster Summary: To determine potential impact of online adaptive radiotherapy in brachytherapy, we reapplied original plan parameters developed with planning CT directly onto day-of CT.
Predicting Patient Suitability for Adaptive Radiotherapy Using CT and Deep Learning
Authors: Jessica Li, RT(T); Nikhil Shad, BS; Todd Bossenberger, MS, CMD, DABR; Ramesh Boggula, PhD, DABR
Poster Summary: This study introduces a decision-support tool that uses CT imaging-based deep learning to assess patient suitability for adaptive radiotherapy on the Ethos system.
Radioablation for Refractory Ventricular Tachycardia
Authors: Matthew Susen, MBA, MS, CMD, RT(R)(T); Nathan Yu, MD; Hicham El Masry, MD; Jennifer Swartz, BSRT(R)(M)(T), CMD; Quan Chen, PhD
Poster Summary: Surgical ablation doesn't always work, and Mayo Clinic now offers radiation therapy as an alternative for ablative procedure. Using external beam photon radiation, they have successfully treated right ventricular tachycardia (RVT) via radioablation.
Reducing Radiation Dose to Ipsilateral Lung Volume by Using Surface-Guided Deep Inspiration Breath Hold (DIBH) Technique for Treating Patients with Right Breast Cancer
Authors: Sining Chen, BS, CMD; Cyril Tai, MS, RT(T), CMD; Niral Shah, RT(T); Mario Serrano-Sosa, PhD; Manjeet Chadha, MD
Poster Summary: A comparative dosimetric study examines the potential benefits of using deep inspiration breath hold for right breast/chest wall and lymph node irradiation.
Rotational Dosimetry in a Proton and Photon Therapy Centre: The UCLH Experience
Authors: Talia Milne, BS; Pravesh Bhudia, BSc
Poster Summary: Understand the structure and implementation of a rotational dosimetry program across a photon and proton therapy centre at UCLH. Recognize the benefits and challenges of rotational workforce models, including competency management and workforce resilience.
Sharpening Dose Falloff with SBRT NTO in the Case of Lung SBRT
Authors: Tiffany Kei, MS, CMD, RT(R)(M)(T); Kenny Guida, DMP
Poster Summary: The introduction of the SBRT NTO in Varian Eclipse Treatment Planning System v18.0 enhances intermediate dose conformity in lung SBRT, effectively reducing radiation exposure to healthy tissue while optimizing the efficiency of SBRT treatment planning.
The Dosimetry Educator: Advancing Education and Innovation in Medical Dosimetry
Authors: Jenna Cimmiyotti, MS, CMD, RT(R)(T); Brittni McKane, MS, CMD, RT(R)(T)
Poster Summary: This poster showcases the Dosimetry Educator's role in mentorship, rotation coordination, educational content management, and development of innovative practices enhancing dosimetry education at Mayo Clinic.
Utilizing a patient specific silicone bolus fabricated using a 3D printed mold negative for enhanced head and neck radiation therapy set-up in treatment of the posterior scalp
Authors: Anthony Machuca, BS, CMD; Xuantong Zhang, BS, CMD; Charlotte Read, MS; Ren-Dih Sheu, PhD, DABR
Poster Summary: Authors developed a 3D-printed patient-specific silicone bolus to improve fit, dose distribution, and reproducibility in radiation therapy treatment for the posterior skull.
Utilizing RapidPlan for knowledge-based planning of malignant pleural mesothelioma: Can RapidPlan help reach a higher prescription dose compared to the clinical plan
Authors: Victoria Olsen, CMD, BS; Dennis Campos, BS; Hao Jun Chen, BS; Samantha Ciumei, BS; Maria Dimopoulos, PhD, MBA, RT(T); Vishruta Dumane, PhD, DABR
Poster Summary: Authors explore the dosimetric benefits of utilizing a RapidPlan model versus traditional methods for mesothelioma planning while exploring ipsilateral lung volumes impact on prescription dose.
VMAT SRS Comparison on IROC Houston SRS Phantom
Authors: Jasper Theel, BS, Jack Wang, CMD
Poster Summary: With the emergence of Hyper Arc planning on the Varian Eclipse planning system, it is important to understand where the planning improvements are achieved with the implementation of the new technology.