Dr. Paurakh L. Rajbhandary Profile

Dr. Paurakh L. Rajbhandary

Doctoral

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 12 March 2018 Presentation + Paper

Energy dependence of SNR and DQE for effective monoenergetic imaging in spectral CT

Paurakh Rajbhandary, Norbert Pelc

Proceedings Volume 10573, 105731F (2018) https://doi.org/10.1117/12.2293932

KEYWORDS: Signal to noise ratio, Sensors, Spatial frequencies, Quantum efficiency, X-rays, Bone, X-ray computed tomography, Imaging systems, Signal detection, Signal attenuation

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Proceedings Article | 12 March 2018 Paper

Effect of electronic noise and lowest energy threshold selection in photon counting detectors

Paurakh Rajbhandary, Norbert Pelc

Proceedings Volume 10573, 105734S (2018) https://doi.org/10.1117/12.2293929

KEYWORDS: Sensors, Photon counting, Bone, Signal attenuation, X-ray detectors, X-rays, Signal detection, Gaussian filters, Interference (communication), Imaging spectroscopy

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Proceedings Article | 12 March 2018 Presentation + Paper

Frequency dependent DQE of photon counting detector with spectral degradation and cross-talk

Paurakh Rajbhandary, Mats Persson, Norbert Pelc

Proceedings Volume 10573, 1057312 (2018) https://doi.org/10.1117/12.2293922

KEYWORDS: Sensors, Spatial frequencies, Signal detection, Modulation, Photon counting, Quantum efficiency, X-rays, Distortion, Bone, Sensor performance

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Proceedings Article | 9 March 2018 Presentation + Paper

Generalized linear-systems framework for performance assessment of energy-resolving photon-counting detectors

Mats Persson, Paurakh Rajbhandary, Norbert Pelc

Proceedings Volume 10573, 105731A (2018) https://doi.org/10.1117/12.2293402

KEYWORDS: Sensors, Photodetectors, Sensor performance, Spatial frequencies, Signal detection, X-rays, Fourier transforms, Spatial resolution

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SPIE Journal Paper | 18 May 2017

Segmented targeted least squares estimator for material decomposition in multibin photon-counting detectors

Paurakh Rajbhandary, Scott Hsieh, Norbert Pelc

JMI, Vol. 4, Issue 02, 023503, (May 2017) https://doi.org/10.1117/12.10.1117/1.JMI.4.2.023503

KEYWORDS: Photodetectors, Target detection, Sensors, Monte Carlo methods, Image segmentation, X-ray detectors, Gold, Aluminum

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Proceedings Article | 9 March 2017 Presentation + Paper

Effect of spatio-energy correlation in PCD due to charge sharing, scatter, and secondary photons

Paurakh Rajbhandary, Scott Hsieh, Norbert Pelc

Proceedings Volume 10132, 101320V (2017) https://doi.org/10.1117/12.2254999

KEYWORDS: Sensors, Photons, Photon counting, Monte Carlo methods, X-ray computed tomography, X-ray detectors, X-ray fluorescence spectroscopy, X-ray imaging, X-rays, Distortion, Imaging spectroscopy, Electrons, Matrices

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Proceedings Article | 29 March 2016 Paper

“Conventional” CT images from spectral measurements

Paurakh Rajbhandary, Norbert Pelc

Proceedings Volume 9783, 97831Q (2016) https://doi.org/10.1117/12.2216988

KEYWORDS: Computed tomography, Photon counting, Sensors, Imaging systems, Iodine, X-ray computed tomography, Image segmentation, Bone, X-rays, Signal attenuation

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Proceedings Article | 18 March 2015 Paper

Statistical bias in material decomposition in low photon statistics region

Paurakh Rajbhandary, Norbert Pelc

Proceedings Volume 9412, 94124W (2015) https://doi.org/10.1117/12.2081326

KEYWORDS: Aluminum, Photon counting, Sensors, Signal detection, X-ray computed tomography, Imaging systems, Calibration, Data modeling, Computer simulations, Switching

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Proceedings Article | 19 March 2014 Paper

Segmented targeted least squares estimator for material decomposition in multi bin PCXDs

Paurakh Rajbhandary, Scott Hsieh, Norbert Pelc

Proceedings Volume 9033, 903319 (2014) https://doi.org/10.1117/12.2043198

KEYWORDS: Image segmentation, Aluminum, Signal attenuation, X-ray detectors, Monte Carlo methods, Photodetectors, X-rays, Calibration, Error analysis, Medicine

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Showing 5 of 9 publications

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