ArticleJournal of applied clinical medical physics2017
Optimization of a novel large field of view distortion phantom for MR-only treatment planning.
Article in Journal of applied clinical medical physics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Multi-parametric MRI for radiotherapy simulation.Medical physics · 2023Review
- Article
- Design and construction of a customizable phantom for the characterization of the three-dimensional magnetic resonance imaging geometric distortion.Journal of applied clinical medical physics · 2021Article
- Task group 284 report: magnetic resonance imaging simulation in radiotherapy: considerations for clinical implementation, optimization, and quality assurance.Medical physics · 2021Article
- Synthetic CT Generation of the Pelvis in Patients With Cervical Cancer: A Single Input Approach Using Generative Adversarial Network.IEEE access : practical innovations, open solutions · 2021Article
- A modular phantom and software to characterize 3D geometric distortion in MRI.Physics in medicine and biology · 2020Article
- Large field of view distortion assessment in a low-field MR-linac.Medical physics · 2019Article
- Per-organ assessment of subject-induced susceptibility distortion for MR-only male pelvis treatment planning.Radiation oncology (London, England) · 2018Article
- Evaluating the repeatability and set-up sensitivity of a large field of view distortion phantom and software for magnetic resonance-only radiotherapy.Physics and imaging in radiation oncology · 2018Article
- Geometric accuracy of the MR imaging techniques in the presence of motion.Journal of applied clinical medical physics · 2018Article
- MRI-only treatment planning: benefits and challenges.Physics in medicine and biology · 2018Review
- FMEA of MR-Only Treatment Planning in the Pelvis.Advances in radiation oncologyArticle
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
purposeMR-only treatment planning requires images of high geometric fidelity, particularly for large fields of view (FOV). However, the availability of large FOV distortion phantoms with analysis software is currently limited. This work sought to optimize a modular distortion phantom to accommodate multiple bore configurations and implement distortion characterization in a widely implementable solution. METHOD AND MATERIALS: To determine candidate materials, 1.0 T MR and CT images were acquired of twelve urethane foam samples of various densities and strengths. Samples were precision-machined to accommodate 6 mm diameter paintballs used as landmarks. Final material candidates were selected by balancing strength, machinability, weight, and cost. Bore sizes and minimum aperture width resulting from couch position were tabulated from the literature (14 systems, 5 vendors). Bore geometry and couch position were simulated using MATLAB to generate machine-specific models to optimize the phantom build. Previously developed software for distortion characterization was modified for several magnet geometries (1.0 T, 1.5 T, 3.0 T), compared against previously published 1.0 T results, and integrated into the 3D Slicer application platform.
resultsAll foam samples provided sufficient MR image contrast with paintball landmarks. Urethane foam (compressive strength ∼1000 psi, density ~20 lb/ft
conclusionThe design and implementation of a modular, extendable distortion phantom was optimized for several bore configurations. The phantom and analysis software will be available for multi-institutional collaborations and cross-validation trials to support MR-only planning.
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