B Fahimian

Roadmap: medical physics technologies in brachytherapy

William Y. Song, Michael Roumeliotis, Junghoon Lee, Aaron Fenster et autres

Brachytherapy is a crucial modality of radiotherapy for cancer, known for its effectiveness in delivering high doses of radiation directly to tumours while sparing surrounding healthy tissues. Despite its clinical importance, recent years have witnessed a concerning decline in its utilization, which …

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3D printing in brachytherapy: A systematic review of gynecological applications

B Fahimian, Wu Liu, Lawrie Skinner, Amy S. Yu et autres

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Deep Learning-Based Registration of MR and Treatment Planning Ultrasound Images for HDR Prostate Brachytherapy

Y. Chen, Lequan Yu, Wei Liu, B Fahimian et autres

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Dose Prediction for Cervical Cancer Brachytherapy Using 3-D Deep Convolutional Neural Network

Ming Ma, Elizabeth Kidd, B Fahimian, Bin Han et autres

Brachytherapy is a critical modality in treatment of cervix cancer. However, developing a clinically acceptable plan is a time-consuming manual process. In this article, we propose a dose prediction method for cervix cancer brachytherapy using a 3-D deep convolutional neural network (CNN) …

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MR to ultrasound image registration with segmentation‐based learning for HDR prostate brachytherapy

Yizheng Chen, Lei Xing, Lequan Yu, Wu Liu et autres

PURPOSE: Propagation of contours from high-quality magnetic resonance (MR) images to treatment planning ultrasound (US) images with severe needle artifacts is a challenging task, which can greatly aid the organ contouring in high dose rate (HDR) prostate brachytherapy. In this study, a …

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A robotically assisted 3D printed quality assurance lung phantom for Calypso

Dante P. I. Capaldi, Lawrie Skinner, Piotr Dubrowski, Hao Zhang et autres

Abstract Purpose . Radiation dose delivered to targets located near the upper-abdomen or in the thorax are significantly affected by respiratory-motion. Relatively large-margins are commonly added to compensate for this motion, limiting radiation-dose-escalation. Internal-surrogates of target motion, such as a radiofrequency (RF) …

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Automated multi-parameter high-dose-rate brachytherapy quality assurance via radioluminescence imaging

Mengyu Jia, Tae Jin Kim, Yong Yang, Lei Xing et autres

Abstract The purpose of this study is to leverage radioluminescence imaging for the development of an automated high-dose-rate (HDR) brachytherapy quality assurance (QA) system that enables simultaneous measurements of dwell position, dwell time, wire velocity, and relative source strength in a single …

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Intensity modulated Ir-192 brachytherapy using high-Z 3D printed applicators

Lawrie Skinner, Thomas Niedermayr, Nicolas D. Prionas, Joseph Perl et autres

Gynecologic cancers are often asymmetric, yet current Ir-192 brachytherapy techniques provide only limited radial modulation of the dose. The shielded solutions investigated here solve this by providing the ability to modulate between highly asymmetric and radially symmetric dose distributions at a given …

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Patient motion tracking for non‐isocentric and non‐coplanar treatments via fixed frame‐of‐reference 3D camera

Sergey Gasparyan, Kyle Ko, Lawrie Skinner, Ryan B. Ko et autres

PURPOSE: As C-arm linac radiation therapy evolves toward faster, more efficient delivery, and more conformal dosimetry, treatments with increasingly complex couch motions are emerging. Monitoring the patient motion independently of the couch motion during non-coplanar, non-isocentric, or dynamic couch treatments is a …

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Tungsten filled 3D printed field shaping devices for electron beam radiation therapy

Lawrie Skinner, B Fahimian, Amy S. Yu

PURPOSE: Electron radiotherapy is a labor-intensive treatment option that is complicated by the need for field shaping blocks. These blocks are typically made from casting Cerrobend alloys containing lead and cadmium. This is a highly toxic process with limited precision. This work …

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Directionally Modulated Ir-192 Brachytherapy Using Simple 3D Printed Shielded Applicators

Lawrie Skinner, Thomas Niedermayr, B Fahimian, Nicolas D. Prionas et autres

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Flexible optically stimulated luminescence band for 1D in vivo radiation dosimetry

Tae Jin Kim, Kyung Oh Jung, B Fahimian, Guillem Pratx

Abstract In vivo dosimetry helps ensure the accuracy of radiation treatments. However, standard techniques are only capable of point sampling, making it difficult to accurately measure dose variation along curved surfaces in a continuous manner. The purpose of this work is to …

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