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Deep learning for metal artifact reduction in computed tomography images
RPI ID: 2018-008-401, 2018-008-601Innovation Summary:This invention from Rensselaer Polytechnic Institute introduces a deep learning-based framework for reducing metal artifacts in computed tomography (CT) images. The system leverages a neural network trained on paired CT datasets—with and without metal artifacts—to reconstruct high-fidelity images...
Published: 7/21/2025
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Updated: 7/3/2025
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Inventor(s): Ge Wang, Lars Gjesteby, Qingsong Yang, Hongming Shan
Keywords(s): computed tomography (CT), deep learning, machine-learning, metal artifact reduction
Category(s): Biotechnology and the Life Sciences
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Stationary In-vivo Grating-enabled Micro-CT Architecture (SIGMA)
RPI ID: 2018-013-401Innovation Summary:This invention introduces a stationary in-vivo grating-enabled micro-CT system, known as SIGMA. The architecture eliminates the need for mechanical rotation by using a fixed array of X-ray sources and detectors arranged in a circular geometry. Grating-based interferometry is integrated into the system to enhance...
Published: 7/21/2025
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Updated: 7/3/2025
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Inventor(s): Ge Wang, Qingsong Yang, Guang Li, Wenxiang Cong
Keywords(s):
Category(s): Biotechnology and the Life Sciences
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Fully Spectral X-ray Interior Tomographic Imaging
RPI ID: 2015-056-401 Innovation Summary:This invention presents a novel image reconstruction technique for computed tomography (CT) using current-integrating data and dual-energy imaging. Unlike standard CT that assumes ideal line-integral models, this method uses a realistic polychromatic model for X-ray interactions. An optimization framework decomposes...
Published: 7/21/2025
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Updated: 7/3/2025
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Inventor(s): Wenxiang Cong, Ge Wang, Qingsong Yang
Keywords(s): 3rd-generation CT, 4th-generation CT, Energy-integrating detector, photon-counting detector, silicon strip detector, spatially variable threshold settings, Spectral CT, spectral sensing detector
Category(s): Biotechnology and the Life Sciences
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Dynamic Bowtie Filter for Cone-beam/Multi-slice CT
RPI ID: 2014-041-201Innovation Summary:This invention provides a dynamic bowtie filter for cone-beam and multi-slice CT scanners designed to adapt in real-time to patient anatomy. The filter includes both a highly-attenuating bowtie (HB) filled with liquid and a weakly-attenuating bowtie (WB) immersed within the same medium. By dynamically adjusting...
Published: 7/21/2025
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Updated: 7/3/2025
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Inventor(s): Wenxiang Cong, Fenglin Liu, Ge Wang, Qingsong Yang
Keywords(s):
Category(s): Biotechnology and the Life Sciences
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Attenuation Map Reconstruction From TOF PET Data
RPI ID: 2014-032-201 Innovation Summary:This technology provides a method to reconstruct attenuation maps for positron emission tomography (PET) using only time-of-flight (TOF) emission data. The system does not require a separate CT scan or any prior knowledge of specific anatomical subregions, which simplifies the imaging workflow. Instead, the approach...
Published: 7/21/2025
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Updated: 7/3/2025
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Inventor(s): Wenxiang Cong, Ge Wang, Qingsong Yang
Keywords(s):
Category(s): Biotechnology and the Life Sciences
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