2019 Annual Meeting Poster Presentations


3mm Brass Bolus Daily Versus 5mm Superflab QOD in Chest Wall Patients
Authors: L. Yanthis, MS, DABR; M. Sardesai; C. Harper, CMD; M. Obana, CMD
Long Beach Memorial Medical Center/Saddleback Memorial Medical Center
Poster Summary: The goal of this study was to evaluate the relative skin dose achievable using 3mm brass bolus, 3mm superflab bolus, and 5mm superflab

A Dosimetric Comparison Between a Knowledge-based Planning Model With and Without a Ring
Author: D. Granatowicz MS, CMD
Nebraska Medicine
Poster Summary: A knowledge-based planning model with a ring can improve the dosimetry of a treatment plan when compared to a knowledge-based planning model without a ring


Dosimetric Impact in IMRT-SW Dose Optimization with the gEUD-based Objective Using  the TPS Eclipse: An Investigation Approach for the Organ at Risk
Author: A. Essadok
Institut Salah Azaiez
Poster Summary: In IMRT-SW, the algorithm PO (v13.7) based gEUD, in the TPS Eclipse can be used on a successful approach to achieve a better protection of different organs at risks. The use of this method, according to the TG166 recommendations, doesn’t affect, in a coarse way, the targets volumes coverage.

A Dosimetric Validation of MRI-Based Synthetic CT for SBRT Liver Cancer
Authors: O. Kayode, MS, RT(R)(T), CMD; Y. Liu, PhD; T. Wang, PhD; P. Patel, MD; X. Yang, PhD; T. Liu, PhD; Walter Curran, MD; D. Whitaker, CMD; Y. Lei, PhD; L. Ren, PhD
Emory University Hospital/ Winship Cancer Institute, Emory University Hospital
Poster Summary:  This work aims to dosimetrically validate a deep-learning-based abdominal synthetic CT (sCT) generation method for MRI only liver stereotactic radiotherapy (SBRT) treatment planning.

Aiding Inverse Planning with IPA for Head and Neck Cancers
Authors:  B. Graham, BS, RT(T); C. Kabat, BS; N. Papanikolaou, PhD; K. Rasmussen, PhD; N. Kirby, PhD; D. Saenz, PhD; P. Myers, PhD; D. Baacke, CMD; K. Nicol, CMD; T. Kyenzah, CMD; K. Dolormente, CMD; S. Stathakis, PhD
University of Texas Health Science Center San Antonio
Poster Summary: Using a developmental application called the Ideal Planning Assistant (IPA) to help assist in the Inverse Planning on Head and Neck Cancers.

Application of a Rapid Arc/3D Radiotherapy Technique to Reduce Toxicity to Lungs
Authors: R. Margusian, MS, CMD; L. Maslack, CMD
Kaiser Permanente
Poster Summary: Based on experiences using Hybrid Plan since 2014, this will show how to improve the quality of Lung/Esophagus plans.

Automated Fallback Planning for Switching Beam Energy on Volumetric Modulated Arc Therapy (VMAT) in RayStation
Authors: P. Ahmadi, BS, MS; Y. Wang, PhD
Suffolk University/Massachusetts General Hospital
Post Summary: Automated fallback planning for switching beam energy on VMAT plans in RayStation.

Automated Treatment Plan Check with Eclipse API
Authors:  D. Hernandez Morales, MS; P. Lara, CMD; C. Patrick, CMD, RT(T); J. Stoker, PhD
Mayo Clinic Arizona
Poster Summary:  An ESAPI plan check script was developed to automate manual checks performed during treatment planning and chart check to increase efficiency and plan quality.

Comparison of Flexible Silicone Bolus Versus 3D Printed Rigid Bolus for the Treatment of Recurrent Basal Cell Carcinoma of the Inner Canthus
Authors: J. Clancey, CMD; L. Best, MD; J. Allan, BSc; J. Robar, PhD
Nova Scotia Health Authority
Poster Summary: Rigid 3D printed bolus was compared to flexible silicone bolus for a patient
with recurrent basal cell carcinoma of the inner canthus.

Comparison of Scripted EZ fluence-planning with Previously Manually Generated Plans for Breast in Prone Position
Authors: K. Vaidya, CMD; J. Baker; A. Reigle; J. Antone, CMD; L. Lucille; Y. Cao
Northwell Health System
Poster Summary: Comparison of scripted EZ fluence -planning with previously manually generated plans for breast in prone position to show improved breast volume coverage and skin dose.

Evaluation and Adaption of Knowledge-Based Planning Models for SBRT Prostate Cases
Authors: R. Zheng, CMD; R. Chan; Y. Cao
Northwell Health
Poster Summary: This study is to develop a knowledge-based model for SBRT prostate planning in order to improve efficiency, consistency, and maintain the quality of treatment plans.

Evaluation of Dose Variation in Head and Neck Patients During their Course of Treatment
Authors: V. Puri, RT(R)(M)(T); P. Montanaro, MS, DABR
MD Anderson Cancer Center/Texas Oncology
Poster Summary: The goal is to assess the planning target volume coverage, measure the mean dose to the parotids and sensitive structures moving into high dose regions such as the cord. 

How AI Can Benefit Dosimetrist Daily Workflow
Authors: Ezequiel Ramirez, CMD; Timothy Solberg; Sue Yom, MD; Colin Carpenter
University of California San Francisco/Siris Medical
Poster Summary: AI is being used to improve efficiency for H/N patients. A total of eight patients were planned with this software and showed a decrease in planning time.

Improving the Efficiency of Prostate Inverse Planning with Ideal Planning Assistant
Authors:  T. Schantz, BS; C. Kabat, BS; N. Papanikolaou, PhD; K. Rasmussen, PhD; N. Kirby, PhD; D. Saenz, PhD; P. Myers, PhD; D. Baacke, CMD; K. Nicol, CMD; T. Kyenzah, CMD; K. Dolormente, CMD; S. Stathakis, PhD
University of Texas Health San Antonio
Poster Summary: This research evaluates the Ideal Planning Assistant program as a planning tool for prostate radiotherapy, by comparing treatment plans with and without its use.

In Search of a One-plan Solution to VMAT Chest Wall: Skin Dose
Authors: A. Day, CMD; J. Clancey, RT(T), CMD; J. Allen, BSc; M. Yewondwossen, PhD, DABR, MCCPM; T. Monajemi, PhD, MCCPM; J. Robar, PhD, FCCPM, Patricia Oliver
Nova Scotia Cancer Centre
Poster Summary: Brass mesh provides a viable one class solution to planning VMAT chest wall. Comparable skin dose can be achieved with brass mesh by alternating the fractionation schedule.

Interplay Effect from Static IMRT and VMAT SBRT Plans for Lung Tumors with Movement Over One Centimeter
Author: J. Dowty, RT(T)
Grand Valley State University
Poster Summary: This project investigates the dosimetric impact of the interplay effect for static IMRT and VMAT SBRT plans for lung tumors with movement over one centimeter.

Interprofessional Education Within the Radiation Oncology Field
Author: R. McKinnies, MS, CMD, RT(R)(T)
Southern Illinois University
Poster Summary: Interprofessional education (IPE) will be discussed regarding its benefits, IPE as an evolving practice, perspectives of clinicians and administrators, and IPE’s importance in education.

Investigating the Clinical Usefulness and Robustness of a CT-simulator Phantom and Analysis Software for Quality Assurance
Authors: H. Rosenfeld MS, RT(T); T. Shacham RT(T); Y. Birstein RT(T); E. Shekel Msc; V. Knowles; D. Levin, PhD
Assuta Medical Centers/IMT
Poster Summary: This study demonstrated that the CT-Sim Check phantom and software provide a simple, robust, easy to use tool for CT-Sim QA.

Leveraging Three-dimensional Printing to Customize Facial Shielding Over Irregular Surfaces in Radiation Therapy of Facial Mycosis Fungoides
Authors: A. Seo; B. Jackson MS; Kara Charlick, CMD; Y. Kim, RT; A. Kusano, MD, SM
Anchorage and Valley Radiation Therapy Centers /University of Washington School of Medicine /Northwest Medical Physics Center
Poster Summary: Three-dimensional printing is a time and cost-effective method to obtain highly quality, conformal shielding for electron therapy.

Monitoring Anatomy Changes in Head and Neck Radiotherapy Using Cherenkov Imaging
Authors: B. Marshall, BS, RT(T); D. Alexander, MS; P. Bruza, PhD; B Pogue, PhD; D. Gladstone, ScD, DABMP; S. Jobin, MS, CMD, RT(T); L. Jarvis, MD, PhD
Dartmouth Hitchcock Medical Center
Poster Summary: Cherenkov intensity changes in phantom imaging could help identify patients in need of adaptive planning due to anatomy changes in head and neck radiotherapy.

MR-linac Collimator Size Limitation and Impact on the Treatment of GYN Patients
Authors: Richard Corbett III, BS; Mark Mergler, BS; Alberto Avila; Jamie Baker, PhD, MEd, CMD; Pam Castillo, BS, CMD; Angela Sobremonte, BS, CMD; Belinda Lee, BS, CMD; Sastry Vedam, PhD
The University of Texas MD Anderson Cancer Center, Houston
Poster Summary: MR-Linac Collimator Size Limitation and Impact on the Treatment of GYN Patients. The overall research is an initial review for GYN radiotherapy planning.

Multi-isocenter Planning Technique for Breast/Chest Wall with Nodal Involvement on Halcyon™ Treatment System
Authors: A. Tiwari, CMD; O. Apinorasethkul, CMD
Hospital of the University of Pennsylvania
Poster Summary: To evaluate multi-isocenter planning technique for breast/chest wall with nodal involvement on Halcyon™ treatment system

Optimization of Auto-Generated Chest Wall Radiation Treatment Plans Developed for Post-mastectomy Breast Cancer in Underserved Clinics
Authors: T. Esho, BS; C. Chung; J. Thompson
University of Texas at M.D. Anderson Cancer Center
Poster Summary: Improving the management of breast cancer in undeserved countries by developing automated post-mastectomy radiation therapy plans that can be improved through TPS specific optimization guidelines.

Optimizing Efficiency and Safety in External Beam Radiotherapy using Automated Plan Check (APC) Tool and Six Sigma Methodology at Stanford Radiation Oncology
Authors: S. Liu, PhD; K. Bush, PhD; J. Bertini, BS; J. Lewis, BS; D. Pham, MS; Y. Yang PhD; T. Niedermayr, PhD; L. Skinner, PhD; B. Beadle, MD, PhD; L. Xing PhD;  A. Hsu, PhD; N. Kovalchuk, PhD
Stanford Radiation Oncology/Davidson College
Poster Summary: Implementation of the APC script, developed within Six Sigma framework using FMEA and incident reports, significantly reduced the error rate and physics plan check time.

RapidPlan Development of VMAT Plans for Cervical Cancer Patients in Low- and Middle-Income Countries
Authors: M. Tinoco, BS; E. Waga, BS; K. Tran, BS; H. Vo, BS; J. Baker, PhD, MEd, CMD; R. Hunter, CMD; C. Peterson, PhD; N. Taku, MD, MPhil, MPH; L. Court, PhD
The University of Texas at MD Anderson Cancer Center School of Health Professions
Poster Summary: A RapidPlan model capable of producing treatable VMAT plans for cervical cancer was developed to address understaffing issues in low- and middle-income countries.

Refining Complex Re-irradiation Planning Through Feasibility Benchmarking and Analysis for Informed Treatment Planning
Authors: S. Duffy, CMD; J. Muenkel; M. McBride, CMD; Y. Zheng; R. Ellis
University Hospitals: Cleveland Medical Center SCC
Poster Summary: Feasibility-based optimization techniques, mitigating preoptimization uncertainties tied to objective viability, led to informed treatment planning that showed promising dosimetric outcomes in re-irradiation cases.

Separation of Multiple Lesions for Radiosurgical Treatment of Brain Metastasis
Authors: K. Salah, BS, CMD; G. Jozsef, PhD; J. Knisely, MD
New York-Presbyterian/Weill Cornell
Poster Summary: “Kmeans” clustering of lesions is beneficial in multi-lesion/multi-isocentric radiosurgery planning, and equal or better than grouping by maximizing lesion separations within groups, or intuitive grouping.

Skin Dose of Vulva Carcinoma Treatment Without Tissue Compensator on Flattening Filter Free Photon Beams
Author: O. Apinorasethkul, MS, CMD; N. Taunk, MD, MS
Hospital of the University of Pennsylvania
Poster Summary: To analyze the skin dose of vulvar carcinoma treatment without traditional bolus on a flattening filter free (FFF) photon treatment platform.

Sliding-window Delivery of Volumetric Modulated Arc Therapy (SW-VMAT) with Direct Machine-parameter Optimization in RayStation
Authors: Liam Van Benthuysen CMD; Christopher Cotter, MS; Yi Wang, PhD
Massachusetts General Hospital
Poster Summary: Comprehensive clinical validation was performed for sliding-window VMAT in RayStation. The plan quality, planning process, and QA results were compared to conventional step-and-shoot VMAT.

The Development of Back up Treatment Plans for Patients Planned for MR Linac Treatments
Authors: Joanna Nemec, BS; Justin Agustin, BS; Carol Mannamplackal; Kyle Phan; Mahsa Dehghanpour, EdD, MS, CMD; Pam Castillo, CMD; Belinda Lee, CMD; Angela Sobremonte, CMD; Sastry Vedam, PhD
UT Health School of Health Professions
Poster Summary: This study evaluates the effectiveness of conventional linac backup plans when compared to MR-linac treatment through DVH comparison.

The Evaluation of Different Flash Techniques to Improve Robustness in Delivery if IMRT Chest Wall Radiation Therapy
Authors: K. Krupela, CMD; K. Kuhn, CMD; K. McConnell, CMD; D. Roesener MS; E. Cochran, PhD
The Ohio State University
Poster Summary: Robustness of flash with IMRT planning is dependent on fluence generation, either via optimization or manual creation. In-vivo measurements are necessary to determine appropriate flash.

The Setup Shifts Post CBCT Imaging for Nasal Cavity Cancer and Their Impact on Plan Quality: Are They Necessary?
Author: Kirk Luca
Grand Valley State University
Poster Summary: The setup shifts post CBCT imaging for nasal cavity cancer and their impact on plan quality: are they necessary?

The Use of an Ideal Planning Assistant on the Inverse Planning of Lung Patients
Authors: J. Solis, BS; C. Kabat, BS; A. Alexandrian, BS; N. Papanikolaou, PhD; K. Rasmussen, PhD; N. Kirby, PhD; D. Saenz, PhD; P. Myers, PhD; D. Baacke, CMD; K. Nicol, CMD; T. Kyenzah, CMD; K. Dolormente, CMD; S. Stathakis, PhD
University of Texas Health and Science Center San Antonio/Mays Cancer Center UT Health MD Anderson
Poster Summary: To see the effectiveness of the Ideal Planning Assistant (IPA) in creating better lung plans by comparing IPA plans to non-IPA plans.

Time Costs Associated with Radiation Treatment Plan Revisions and Reworks: Large-scale Operational Data from a Large Academic Cancer Center
Authors: K. Nguyen, MBA, CMD, RT(T); M. Ning, MD, MPH; R Ghafar, MBA, RT(T); D. Gomez, MD; B. G. Gunn, MD; M. Kantor, BS; N. Olivieri, ME; J. Herman, MD, MSc, MHA, FACR; M. McAleer, MD, PhD, DABR; P. Nitsch, MS; R. Natter, MBA; M. Martel, PhD; A. Koong, MD, PhD; A. Klopp, MD, PhD
University of Texas MD Anderson Cancer Center
Poster Summary: Evaluation of the incidence and impact of treatment plan revisions and reworks at a large academic cancer center.

Utilization of Pinnacle Auto-Planning and Sun Nuclear’s Plan IQ to Improve Planning Efficiency
Authors: W. Swanson, CMD; Z. Xu; Y. Zheng; R. Ellis
University Hospitals
Poster Summary: Philips Auto-planning combined with Sun Nuclear’s feasibility Plan IQ tool used together for custom pre-optimization OAR constraints to increase planning efficiency.