meetings

2020 Annual Meeting Poster Presentations

A Dosimetric Comparison of Whole Breast Treatment Planning on Three Most Advanced Radiation Therapy Dose Delivery Systems
Authors:  K Vaidya K, MS; Saha S, MS; Y Ahmed, MS; A Barbera, BS; J Antone, BS; L Lucile, MD; F Gallant, MD
Northwell Health System

Poster Summary: A Dosimetric Comparison of Whole Breast Treatment Planning on Three Most Advanced Radiation Therapy Dose Delivery Systems: Truebeam, Halcyon, Tomotherapy and benefits and limitation of systems

 

A Service-Line Approach: Using Whiteboard Analytics to Improve Time Efficiency in Radiation Oncology
Authors:  S Patel, MS; L Turner, MBA, MS
The University of Texas - MD Anderson School of Health Professions, Banner MD Anderson

Poster Summary: This study shows the value of data analytics through service line approach in tracking the efficiency and to identifying gaps that hinders workflow.

 

A Spatially Fractionated GRID RT Case Study:  Dosimetric Comparison Between 3D Grid and VMAT Lattice
Authors:  K Krudys, CMD; R McCarroll, PhD; B Zhang, PhD; B Yi, PhD; J Snider, MD; J Molitoris, MD; K Marter, CMD
University of Maryland Med Ctr, Univ of Alabama at Birmingham School of Medicine

Poster Summary: 3D Grid has demonstrated its ability to combat bulky disease. An example of our institution’s investigation comparing 3D to a VMAT Lattice technique.

 

Assessing the Viability of Prostate VMAT Plans Produced by RapidPlan
Authors:  V Do, BS; V Nguyen, BS; K Valencia, BS; R Hunter, BS; T Williamson, BS; A Olanrewaju, MBA; J Baker, PhD, MEd, L Court, PhD
The University of Texas MD Anderson Cancer Center School of Health Professions

Poster Summary: This poster describes the application of The University of California San Diego’s prostate RapidPlan model to The University of Texas MD Anderson Cancer Center’s plans.

 

Case Study of Gastrointestional Organ at Risk Sparing through MR-guided Online Adaptive Radiotherapy for SBRT Re-irradiation of Inoperable Pancreatic Cancer
Authors:  D Doty, BS; M Chuong, MD; A Guitierrez, PhD; M Mehta, MD; D Alvarez, MS, DABR; J Contreras, MD; T Romaguera, PhD; R Kotecha, MD; K Mittenauer, PhD, DABR; J Bryant, BS
Miami Cancer Institute, Florida International Student

Poster Summary: In this case study we highlight the clinical utilization of online adaptive radiotherapy (ART) and challenges of dose summation in the re-irradiation setting. 

 

Comparing 3D to IMRT for Non-Small Cell Lung Cancer
Authors:  R McKinnies; PhD, C Collins, BS-HCM,
Southern Illinois University

Poster Summary: This presentation will provide information regarding special considerations for NSCLC with regard to specific disease findings and comorbidities.  One will also be able to determine which treatment techniques are beneficial for this disease considering the patients diagnosis, staging, and prognosis.  Since a statistical test was completed to evaluate and compare the 3D-CRT and the IMRT methods, learners will be able to review these statistics to better understand the differences between the two methods and the significant results pertaining to coverage and dose to critical structures.

 

Creating embedded eye shields in customized wax bolus for treating the nasal dorsum decreases lens dose and streamlines daily patient setup
Authors:  B Swann; BS, X Wang, PhD; M Reyhan, PhD; N Yue, PhD; R Singh, MD; M McKenna, MD
Robert Wood Johnson University Hospital, Rutgers Cancer Institute of NJ

Poster Summary: Embedding lead eye shields in customized wax bolus for treating the nasal dorsum decreases lens dose and streamlines daily patient setup.

 

Determination of an Approach to Account for the Impact of Dental Artifacts on Dose Distributions for Automated Treatment Planning
Authors:  C Merveille, BS; A Susan, BS; T Galindo, BS; S Sunny, BS; M Dehghanpour, EdD, MS; C Chung, BS; A Olanrewaju, MBA; L Court, PhD
The University of Texas MD Anderson Cancer Center, School of Health Professions

Poster Summary: Automated treatment planning does not address dose inaccuracies associated with the presence of dental artifacts. A method to account for artifacts may improve treatment quality.


Dosimetric Differences in Simultaneous Integrated Boost Treatments versus Sequential Boost Treatments of Head and Neck Cancers
Authors:  J Vaughn; P Montanaro, MS, DABR
MD Anderson Cancer Center

Poster Summary: Proximity to planning target volumes plays a significant role in the ability to spare critical structures when using simultaneously integrated boosts versus sequential boost techniques.

 

Dosimetric investigation of ways to account for the Encompass SRS Immobilization System in the Eclipse treatment planning system
Authors:
 D Granatowicz, MS; Y Lei, PhD; W Nie, PhD
Nebraska Medicine

Poster Summary: Due to the high density of the Encompass Immobilization System, it is important to determine an accurate way to account for the dose attenuation.

 

Dosimetric Significance of VMAT Planning Parameters in Prostate Cancer
Authors:  K Lawson; E Frija
The University Of Texas MD Anderson Cancer Center School of Health Professions

Poster Summary: In the VMAT treatment of prostate cancer, the use of 2 full arcs consistently offers higher quality plans than 1 full arc plans or any plans with partial arcs. Additionally, 10x energy offers no real dosimetric advantage over 6x energy regardless of body habitus.

 

Feasibility Impact on Intensity-Modulated Radiation Therapy (IMRT) Treatment Planning in Pinnacle Evolution for Lung Sites
Authors:  C Rendon, BA; J Rembish, BSc; S Stathakis, PhD; N Papanikolaou, PhD; N Kirby, PhD; P Myers, PhD
UT Health Mays Cancer Center

Poster Summary: This study evaluated the dosimetric differences of using Pinnacle Evolution’s PlanIQ™ Feasibility integration versus Personalized Planning only, specifically in Lung disease sites.

 

GammaPod: A Novel Breast SBRT Device
Authors:  F Christ, MS; T Boulton, BS; E Chacko, MS
University of Maryland

Poster Summary: This new innovative technology noninvasively delivers stereotactic radiotherapy to the breast which minimizes unwanted dose to surrounding healthy tissue, and as a result has the potential to significantly improve cosmetic outcomes.  In 2017, the Gamma Pod was FDA approved, after a feasibility study performed at the technology’s site of origin University of Maryland Medical Center (UMMC)) demonstrated its safety and capability. Apart from UMMC, four other medical centers use GammaPod, along with two other international sites. Current running protocols are actively answering key questions related to long-term Gamma Pod efficacy and treatment outcomes.

 

Heart and LAD Artery Dose Comparison for Left-Sided Breast Cancer Using 4DCT
Authors:  K Vu, MS; O Vasilyeva, MS
Grand Valley State University

Poster Summary: A retrospective analysis of 10 breast cancer patients using a 4DCT scan to determine if creating the field border using the 4DCT decreases heart dose.

 

Investigating inter-fractional dose to small bowel during VMAT treatment for GYN cancer using CBCT-CT deformable image registration
Authors:  A Walters, BS;  J Williamson, CMD; A Weiner, MD; S Das, PhD; R Adams, EdD, MPH, FASRT, FAAMD; M Mavroidis, PhD
UNC Hospital

Poster Summary: Investigating radiation dose variation to bowel in gynecological patients receiving EBRT shows remarkable consistency in the high dose region despite anatomical changes in bowel.

 

Investigating inter-fractional variation of dose to esophagus during VMAT treatment for lung cancer using CBCT-CT deformable image registration
Authors:  T Rainer, BHS;  J Williamson, CMD; A Weiner, MD; K Wang, MD; S Das, PhD; R Adams, EdD, MPH, FASRT, FAAMD; M Mavroidis, PhD
UNC Hospital

Poster Summary:  Variation of dose distribution between fractions was observed for the esophagus. Internal organ displacements resulted in considerable deviations between the estimated delivered and planned doses.

 

Magnitude and Potential Predictor of Dosimetric Uncertainties Associated with Beam Modeling and Calculation for Complex SBRT Plans
Authors:  M Sulieman, AAS; E Mejia, BS; S Montemayor; B Kramer, BS; J Phan, MD; X Wang, PhD
The University of Texas MD Anderson Cancer Center School of Health Professions

Poster Summary:  Highly complex SBRT plans are most likely to be affected by uncertainties associated with a treatment planning system's dose calculation and beam modeling.

 

Management of Malignant Pleural Mesothelioma – A Complex Radiotherapy Treatment Technique
Authors:  L Walton
Peter Mac Cancer Centre AUS & Waikato Regional Cancer Centre NZ

Poster Summary:   A complex case study of a malignant pleural mesothelioma patient, including a VMAT plan using jaw tracking, MCO, and acuros XB algorithm; and treated with respiratory gating technology and six-degrees-of-freedom image matching. This poster presentation outlines a complete patient pathway from CT simulation through to post-treatment follow-up.

 

Management of New Generation Implanted Devices for Radiotherapy Patients
Authors:  C Young, MS; C Rincon, BSN, RN, OCN; C Shi, PhD; E Hipp, PhD; M Chan, PhD
Memorial Sloan Kettering Cancer Center

Poster Summary:  This study consolidates existing and newly emerging implanted devices in patients undergoing radiotherapy and categorizes them according to the degree of attention needed in Dosimetry.

 

Personalized Planning Using Feasibility with Pinnacle Evolution in VMAT Head and Neck Patients
Authors:  E Jang, B.Sc;  J Rembish, BCs;  S Stathakis, PhD; N Papanikolaou, PhD;  N Kirby, PhD; P Myers, PhD
UT Health-Mays Cancer Center

Poster Summary:  This study consolidates existing and newly emerging implanted devices in patients undergoing radiotherapy and categorizes them according to the degree of attention needed in Dosimetry.


Placing a Bolus Helps to Lower the RT Dose to Pacemaker in IMRT Treatment of Head and Neck Cancer
Authors:  Y Ahmen, MS; K Vaidya, MS; R Chan, MS; E Thomas, PhD; B Parashar, MD
Northwell Health, Washington Hospital Center

Poster Summary:  Planning IMRT for Head and Neck cancer (HNC) patients can be challenging if a pacemaker is in the vicinity of the treatment field. This study investigated the use of bolus on the pacemaker to reduce RT dose.

 

Proton Planning with Metal in the Beam Path
Authors:  S Maes, CMD; B Nguyen, CMD; R Ermoian, MD; D Maes, DABR
SCCA Proton Therapy Center, University of Washington School of Medicine

Poster Summary:  This poster will review planning considerations that must be taken into account when planning a proton case with metal implants in the beam path.

 

The Benefits of Deep Inspiration Breath Hold in the Treatment of Right-sided Breast Cancer
Authors:  H Tran, MS; M Settle; K Charlick, MS;  J Yordy, MD; A Kusano, MD, SM
Anchorage & Valley Radiation Therapy Centers

Poster Summary:  DIBH effectively reduces the volume of liver irradiated in patients with RS breast cancer without a significant increase in dose to the other OARs. 

 

The Impact of Feasibility Predictions on IMRT Treatment Planning in Pinnacle Evolution for the Brain Region
Authors:  M  Olivares, MS; P Myers, PhD; N Kirby, PhD; J Rembish, BS; S Stathakis; PhD; N Papanikolaou, PhD
UT Health Mays Cancer Center

Poster Summary:  Assess the overall effect Feasibility had on the clinical workflow, plan quality, and dosimetrist experience for brain treatments.

 

The Impact of Feasibility Predictions on IMRT Treatment Planning in Pinnacle Evolution for the Pelvic Region
Authors:  C Payne, BSc; J Rembish, BS; N Kirby, PhD, P Myers, PhD;  S Stathakis; PhD; N Papanikolaou, PhD
UT Health Mays Cancer Center

Poster Summary:  This study compared the dosimetric differences achieved with and without the use of the Feasibility feature for PlanIQ with pelvic treatments. Supported in part by Philips.

 

The Role and Application of Deep Thermal Therapy in Radiation Oncology
Authors:  F Christie, MS; E Paranada, BS; C Moody, BS; D Rodrigues, PhD; J Molitoris, MD

University of Maryland

Poster Summary:  Deep thermal therapy is a powerful additional therapy when combined with radiation therapy by means of inhibition of DNA repair and reoxygenation of radiosensitive tumor cells. This multimodality cancer treatment has been studied in several randomized phase II and III trials demonstrating a good safety profile and a significant increase in clinical outcomes.


Tips to reduce rectal dose using hybrid VMAT techniques for radiation treatments of prostate cancer
Authors: E Short, CMD; P Heckman, PhD; B Yao, MS; P McLaughlin, MD; V Narayana, MD
Ascension Providence, University of Michigan

Poster Summary:  Demonstration that a hybrid VMAT plan compared to a simple VMAT plan reduces dose to the rectum without compromising the prostate target dose coverage or other normal tissue dose constraints.