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Results for "variable rbe": 9 found

A Causal Machine Learning Analysis of Dosimetric and Clinical Predictors of Osteoradionecrosis in Head and Neck Cancer Radiotherapy

Authors: Jingyuan Chen, Sheng Li, Tianming Liu, Wei Liu, Zhengliang Liu, Zhong Liu, Daniel Ma, Samir H. Patel, Guangya Wang, Yunze Yang

Affiliation: University of Miami, Mayo Clinic, School of Data Science, University of Virginia, School of Computing, University of Georgia, Department of Radiation Oncology, Mayo Clinic, Institute of Western China Economic Research, Southwestern University of Finance and Economics

Abstract Preview: Purpose:
Traditional patient outcome analyses relied heavily on conventional statistical models that primarily elucidate correlation rather than causal relationships. In this study, we aim to ident...

Analytical Approach to Calculate Normal Tissue Complication Probability and Tumor Control Probability for Ultra-High Dose Rate Radiation (FLASH) Based on Linear-Quadratic Model

Authors: Santosh K. Agarwalla, Nrusingh C. Biswal, Shree C, Harikrishnan Suresh Kumar, Jajati K. Nayak, Prema P., Sarath K S, Tamil Selvan S, Hem D. Shukla

Affiliation: Variable Energy Cyclotron Centre, Department of Physics, Fakir Mohan University, Department of Radiation Oncology, University of Maryland School of Medicine, Department of Sciences, Amrita Vishwa Vidyapeetham

Abstract Preview: Purpose: The rapid oxygen depletion in tissues during irradiation is the most accepted mechanism of the FLASH effect. However, the Normal Tissue Complication Probability (NTCP) and Tumor Control Proba...

Assessing the Impact of Weighting Dose Volume Histograms By Variable Relative Biological Effectiveness for Radiation-Induced Lymphopenia Risk Prediction

Authors: Yan Chu, Madison Emily Grayson, Radhe Mohan, Pablo P. Yepes

Affiliation: UT Health Science Center at Houston, Rice University, The University of Texas MD Anderson Cancer Center

Abstract Preview: Purpose: Radiation-induced lymphopenia (RIL) is a common adverse effect of radiation therapy, negatively impacting overall survival and anti-PD1 immunotherapy efficacy. Our lab previously developed a ...

Comparison of Biological Effectiveness of COMS Eye Plaques with I-125 and Pd-103 Sources Using Equivalent Uniform RBE-Weighted Dose

Authors: Jonathan J. Chen, Alexei V. Chvetsov, Yulun He, Ramesh Rengan, Andrew Stacey, Kent Wallner

Affiliation: University of Washington and Fred Hutchinson Cancer Center, University of Washington

Abstract Preview: Purpose: To show that the RBE of low-energy photon sources used in COMS (Collaborative Ocular Melanoma Study) eye plaques compensates for protracted irradiation and attenuation of low-energy photons i...

Correlating Cochlear Hearing Loss from Head and Neck Proton Therapy to Variable Relative Biological Effectiveness Dose

Authors: Angela Gathers, Christina Henson, Sakuntala Jagabattuni, Mark A. Newpower

Affiliation: University of Oklahoma HSC, Department of Otolaryngology, University of Oklahoma HSC, University of Oklahoma Health Sciences Center

Abstract Preview: Purpose: A previous departmental study showed an increase in ototoxicity (hearing loss) rates in head & neck cancer (HNC) patients treated with Intensity Modulated Proton Therapy (IMPT) vs. x-ray radi...

Impact of Proton Beam Arrangements on LETd and RBE in Organs at Risk for Nasopharyngeal Cancer

Authors: Mauricio Acosta, Zachary Fellows, Alonso N. Gutierrez, Noah S. Kalman, Kristen A. McConnell, Rob Rohe, Andrew J. Wroe, Sreenija A Yarlagadda

Affiliation: Miami Cancer Institute, Baptist Health South Florida

Abstract Preview: Purpose:
Beam selection is crucial in proton therapy to ensure optimal physical and biological dose conformity to the target while maximizing sparing of normal tissue. This work investigates the im...

Longitudinal Assessment of Normal Lung Radiosensitivity to Individualize Reirradiation

Authors: Smith Apisarnthanarax, Clemens Grassberger, John Kang, Yejin Kim, Justin Leu, Dominic A. Maes, Matthew J. Nyflot, Ramesh Rengan, Annemarie Shepherd, Jing Zeng

Affiliation: Department of Radiation Oncology, University of Washington and Fred Hutchinson Cancer Center, Department of Radiation Oncology, University of Washington, University of Washington, Department of Radiation Oncology, Fred Hutchinson Cancer Center, University of Washington, University of Washington and Fred Hutchinson Cancer Center

Abstract Preview: Purpose: Reirradiation (ReRT) is a rapidly growing clinical challenge driven by better systemic therapy and longer survival, though clear guidelines for ReRT are lacking. Fitting traditional normal ti...

Reducing Variable Rbe in Oars for HN, Breast, and Prostate Proton Therapy Using a Scripted Spot-Delete Technique

Authors: Laura Buchanan, Samantha G. Hedrick, Stephen L. Mahan, Isabella Pfeiffer, Chester R. Ramsey

Affiliation: Thompson Proton Center

Abstract Preview: Purpose: Linear energy transfer (LET) and variable relative biological effectiveness (RBE) evaluation are important steps in the future of proton therapy, moving beyond RBE=1.1 for all treatment plann...

Towards In Vivo Dosimetry for Adaptive MR-Guided Radiation Therapy: Initial Report on a Prototype Injectable Dosimeter

Authors: Daniel Ball, Alex Dresner, Geoffrey S. Ibbott, Leonard H. Kim, Christopher Tyerech, SebastiΓ‘n Vega

Affiliation: MD Anderson Cancer Center at Cooper, Cooper Medical School of Rowan University, The American Board of Radiology, Department of Radiation Oncology, University of Pennsylvania, Rowan University, Philips Healthcare MR Oncology

Abstract Preview: Purpose:
In vivo dosimetry is valuable to radiation therapy for its ability to report the actual dose received by patients but is currently limited to surface and intracavitary measurements, leavin...