Mr. Nathaniel R. Fredette Profile

Nathaniel R. Fredette

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Publications (9)

Proceedings Article | 16 March 2020 Presentation + Paper

Bone density quantification via material decomposition in an arthritic mouse model using photon counting spectral CT

Nathaniel Fredette, Chandra Mohan, Mini Das

Proceedings Volume 11312, 113121G (2020) https://doi.org/10.1117/12.2550543

KEYWORDS: Bone, Arthritis, Sensors, Tissues, Computed tomography, Photon counting, Signal attenuation, Ear, Mouse models, Cartilage

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Proceedings Article | 3 April 2019 Paper

Quantitative phase retrieval of heterogeneous samples from spectral x-ray measurements

Ivan Vazquez, Nathaniel Fredette, Mini Das

Proceedings Volume 10948, 109484R (2019) https://doi.org/10.1117/12.2513513

KEYWORDS: Phase retrieval, Data acquisition, Photon counting, Sensors, Free space, Coded apertures, Tissues, Bone, Polymethylmethacrylate, Aluminum

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Proceedings Article | 3 April 2019 Paper

Experimental validation of a multi-step material decomposition method for spectral CT

Nathaniel Fredette, Stefano Vespucci, Mini Das

Proceedings Volume 10948, 109482T (2019) https://doi.org/10.1117/12.2513503

KEYWORDS: Gadolinium, Sensors, Signal attenuation, Silicon, Computed tomography, X-rays, Iodine, Calibration, X-ray computed tomography, Photon counting

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Proceedings Article | 9 March 2018 Paper

A sensitivity analysis on parameters that affect a multi-step material decomposition for spectral CT

Nathaniel Fredette, Amar Kavuri, Mini Das

Proceedings Volume 10573, 105734K (2018) https://doi.org/10.1117/12.2294956

KEYWORDS: Gold, Signal attenuation, Sensors, Data modeling, Calcium, Electronic filtering, Iodine, Filtering (signal processing), Computed tomography, Signal to noise ratio

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Proceedings Article | 7 March 2018 Presentation + Paper

Interaction of anatomic and quantum noise in DBT power spectrum

Amar Kavuri, Nathaniel Fredette, Mini Das

Proceedings Volume 10577, 105770G (2018) https://doi.org/10.1117/12.2295218

KEYWORDS: Digital breast tomosynthesis, Breast, Denoising, Filtering (signal processing), Image filtering, Mammography, Electronic filtering, Tissues, Optical filters, Signal detection

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Proceedings Article | 10 March 2017 Presentation + Paper

On the impact of local image texture parameters on search and localization in digital breast imaging

William Nisbett, Amareswararao Kavuri, Nathaniel Fredette, Mini Das

Proceedings Volume 10136, 1013607 (2017) https://doi.org/10.1117/12.2256113

KEYWORDS: Digital breast tomosynthesis, Digital imaging, Image processing, Breast, Tomography, Breast imaging, Imaging systems, Image display, Signal detection, Statistical analysis, Medical imaging, Tumor growth modeling, X-ray computed tomography

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Proceedings Article | 9 March 2017 Paper

Impact of Compton scatter on material decomposition using a photon counting spectral detector

Cale Lewis, Chan-Soo Park, Nathaniel Fredette, Mini Das

Proceedings Volume 10132, 101323T (2017) https://doi.org/10.1117/12.2256106

KEYWORDS: Photon counting, Sensors, Signal attenuation, Compton scattering, Distortion, Materials processing, Composites, Photoelectric effect, X-rays, Cones, Polymethylmethacrylate, Error analysis, Aluminum, Statistical analysis, Databases

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Proceedings Article | 9 March 2017 Presentation + Paper

A multi-step method for material decomposition in spectral computed tomography

Nathaniel Fredette, Cale Lewis, Mini Das

Proceedings Volume 10132, 101321C (2017) https://doi.org/10.1117/12.2256114

KEYWORDS: Photon counting, Algorithm development, Computer simulations, Calibration, Gold, Signal attenuation, Computed tomography, Data acquisition, Chemical elements, Medical imaging, X-rays

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Proceedings Article | 18 April 2016 Paper

Single-shot x-ray phase contrast imaging with an algorithmic approach using spectral detection

Mini Das, Chan-Soo Park, Nathaniel Fredette

Proceedings Volume 9783, 97830Q (2016) https://doi.org/10.1117/12.2218056

KEYWORDS: Sensors, Phase contrast, X-rays, Absorption, X-ray imaging, Phase retrieval, Coded apertures, Motion measurement, Tissues, Free space

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Showing 5 of 9 publications

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