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4 April 2022 Orthogonal tomosynthesis for whole body skeletal imaging enabled by carbon nanotube x-ray source array
Diwash Thapa, Alex Billingsley, Yueting Luo, Christina Inscoe, Otto Zhou, Jianping Lu, Yueh Lee
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Proceedings Volume 12031, Medical Imaging 2022: Physics of Medical Imaging; 1203140 (2022) https://doi.org/10.1117/12.2607872
Event: SPIE Medical Imaging, 2022, San Diego, California, United States
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Abstract
We demonstrate a prototypical orthogonal tomosynthesis (OT) system for potential whole-body scanning. The system is enabled by a carbon nanotube (CNT) linear x-ray source array positioned orthogonally to a limited field-of-view (FOV) detector. The multiple X-ray sources are individually addressed to acquire sets of projections while translating the sample over a fixed collimated strip on the detector for full-volume coverage. The OT system was constructed by adding a multislot collimator and a translation bed to the existing stationary digital chest tomosynthesis (s-DCT) system. The OT system was evaluated against the s-DCT system by imaging an anthropomorphic chest phantom. Nine equally spaced x-ray sources spanning ~14° were selected to acquire projections of the phantom at multiple discrete translation steps measuring 19 mm. Qualitatively, feature conspicuity of soft tissue and osseous thoracic structure in the OT reconstruction was comparable to the s-DCT reconstruction. The results of this singular experiment demonstrate the feasibility of using CNTbased tomosynthesis as a whole-body imager for mobile on-field applications.
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Diwash Thapa, Alex Billingsley, Yueting Luo, Christina Inscoe, Otto Zhou, Jianping Lu, and Yueh Lee "Orthogonal tomosynthesis for whole body skeletal imaging enabled by carbon nanotube x-ray source array", Proc. SPIE 12031, Medical Imaging 2022: Physics of Medical Imaging, 1203140 (4 April 2022); https://doi.org/10.1117/12.2607872
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KEYWORDS
Imaging systems
Collimators
Collimation
Reconstruction algorithms
X-ray sources
Carbon nanotubes
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