ArticleJournal of medical imaging (Bellingham, Wash.)2017
Assessment of organ and effective dose when using region-of-interest attenuators in cone-beam CT and interventional fluoroscopy.
Article in Journal of medical imaging (Bellingham, Wash.), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Dosimetric characterization of a Varex VF-80/μXHP x-ray unit using open-ended applicators for superficial radiotherapy.Journal of applied clinical medical physics · 2025Article
- Fluoroscopic Procedure-Room Scatter-Dose Reduction Using a Region-of-Interest (ROI) Attenuator.Proceedings of SPIE--the International Society for Optical Engineering · 2024Article
- Eye-Lens Dose Reduction using Region of Interest (ROI) Attenuators in Neuroimaging.Proceedings of SPIE--the International Society for Optical Engineering · 2023Article
- Article
- VirtualDose-IR: a cloud-based software for reporting organ doses in interventional radiology.Physics in medicine and biology · 2019Article
- Calculation of Forward Scatter Dose Distribution at the skin entrance from the patient table for fluoroscopically guided interventions using a pencil beam convolution kernel.Proceedings of SPIE--the International Society for Optical Engineering · 2018Article
- Investigation of organ dose variation with adult head size and pediatric age for neuro-interventional projections.Proceedings of SPIE--the International Society for Optical Engineering · 2018Article
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Authors and funding
4 authors.
Funding
Abstract
In some medical-imaging procedures using cone-beam CT (CBCT) and fluoroscopy, only the center of the field of view (FOV) may be needed to be visualized with optimal image quality. To reduce the dose to the patient while maintaining visualization of the entire FOV, a Cu attenuator with a circular aperture for the region of interest (ROI) is used. The potential organ and effective dose reductions of ROI imaging when applied to CBCT and interventional fluoroscopic procedures were determined using EGSnrc Monte Carlo code. The Monte Carlo model was first validated by comparing the surface dose distribution in a solid-water block phantom with measurement by Gafchromic film. The dependence of dose reduction on the ROI attenuator thickness, the opening size of the ROI, the axial beam position, and the location of the different organs for both neuro and thoracic imaging was evaluated. The results showed a reduction in most organ doses of 45% to 70% and in effective dose of 46% to 66% compared to the dose in a CBCT scan and in an interventional procedure without the ROI attenuator. This work provides evidence of a substantial reduction of organ and effective doses when using an ROI attenuator during CBCT and fluoroscopic procedures.
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