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Updated: Jun 28, 2026

Viscoelastic Characterization of Soft Tissue-Mimicking Gelatin Phantoms using Indentation and Magnetic Resonance Elastography
Published on: May 10, 2022
Performance evaluation of MRI-based PAGAT polymer gel dosimeter in an inhomogeneous phantom using EGSnrc code on a
Tayyeb Allahverdi Pourfallah1, Mahmoud Allahverdi, Nader Riahi Alam
1Department of Medical Physics and Biomedical Engineering, School of Medicine, Medical Sciences, University of Tehran, Tehran, Iran.
Abstract:
Relative isodose curves were obtained using PAGAT gel dosimeter on homogeneous and inhomogeneous phantoms. Distance-to-agreement (DTA) was calculated between simulated and measured values for both the homogeneous and inhomogeneous phantoms. All DTAs except one passed the acceptance criterion (+/-5 dose variation for selected isodose levels). Results of this study also showed the ability of the Monte Carlo modeling to provide accurate dosimetry, and revealed that the dose response of PAGAT polymer gel is dependent on the method of fabrication.
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