ArticleProceedings of SPIE--the International Society for Optical Engineering
Detector, collimator and real-time reconstructor for a new scanning-beam digital x-ray (SBDX) prototype.
Article in Proceedings of SPIE--the International Society for Optical Engineering. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- Overcoming the thermal limits of photon counting CT resolution using focal spot multiplexing: A feasibility study.Medical physics · 2025Article
- Comparison of three undersampling approaches in computed tomography reconstruction.Quantitative imaging in medicine and surgery · 2019Article
- Design and numerical simulations of W-diamond transmission target for distributed x-ray sources.Biomedical physics & engineering express · 2019Article
- Dynamic electronic collimation method for 3-D catheter tracking on a scanning-beam digital x-ray system.Journal of medical imaging (Bellingham, Wash.) · 2017Article
- Automated 3D coronary sinus catheter detection using a scanning-beam digital x-ray system.Proceedings of SPIE--the International Society for Optical Engineering · 2017Article
- 4D DSA reconstruction using tomosynthesis projections.Proceedings of SPIE--the International Society for Optical Engineering · 2017Article
- Localization of cardiac volume and patient features in inverse geometry x-ray fluoroscopy.Proceedings of SPIE--the International Society for Optical Engineering · 2017Article
- Single-view geometric calibration for C-arm inverse geometry CT.Journal of medical imaging (Bellingham, Wash.) · 2017Article
- Method for dose-reduced 3D catheter tracking on a scanning-beam digital x-ray system using dynamic electronic collimation.Proceedings of SPIE--the International Society for Optical Engineering · 2016Article
- A geometric calibration method for inverse geometry computed tomography using P-matrices.Proceedings of SPIE--the International Society for Optical Engineering · 2016Article
- Depth-resolved registration of transesophageal echo to x-ray fluoroscopy using an inverse geometry fluoroscopy system.Medical physics · 2015Article
- Monte Carlo simulation of inverse geometry x-ray fluoroscopy using a modified MC-GPU framework.Proceedings of SPIE--the International Society for Optical Engineering · 2015Article
- Feasibility of CT-based 3D anatomic mapping with a scanning-beam digital x-ray (SBDX) system.Proceedings of SPIE--the International Society for Optical EngineeringArticle
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Authors and funding
8 authors.
Funding
Abstract
Scanning-beam digital x-ray (SBDX) is an inverse geometry fluoroscopy system for low dose cardiac imaging. The use of a narrow scanned x-ray beam in SBDX reduces detected x-ray scatter and improves dose efficiency, however the tight beam collimation also limits the maximum achievable x-ray fluence. To increase the fluence available for imaging, we have constructed a new SBDX prototype with a wider x-ray beam, larger-area detector, and new real-time image reconstructor. Imaging is performed with a scanning source that generates 40,328 narrow overlapping projections from 71 × 71 focal spot positions for every 1/15 s scan period. A high speed 2-mm thick CdTe photon counting detector was constructed with 320×160 elements and 10.6 cm × 5.3 cm area (full readout every 1.28 μs), providing an 86% increase in area over the previous SBDX prototype. A matching multihole collimator was fabricated from layers of tungsten, brass, and lead, and a multi-GPU reconstructor was assembled to reconstruct the stream of captured detector images into full field-of-view images in real time. Thirty-two tomosynthetic planes spaced by 5 mm plus a multiplane composite image are produced for each scan frame. Noise equivalent quanta on the new SBDX prototype measured 63%-71% higher than the previous prototype. X-ray scatter fraction was 3.9-7.8% when imaging 23.3-32.6 cm acrylic phantoms, versus 2.3-4.2% with the previous prototype. Coronary angiographic imaging at 15 frame/s was successfully performed on the new SBDX prototype, with live display of either a multiplane composite or single plane image.
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