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Experimental measurement of local noise power spectrum (NPS) in photon counting detector‐CT (PCD‐CT) using a single data acquisition
Background Accurate noise power spectra (NPS) measurement in clinical X‐ray CT exams
is challenging due to the need for repeated scans, which expose patients to high radiation …
is challenging due to the need for repeated scans, which expose patients to high radiation …
Unbiased zero-count correction method in low-dose high-resolution photon counting detector CT
Objective. To address the zero-count problem in low-dose, high-spatial-resolution photon
counting detector CT (PCD-CT) without introducing statistical biases or degrading spatial …
counting detector CT (PCD-CT) without introducing statistical biases or degrading spatial …
Correcting statistical CT number biases without access to raw detector counts: Applications to high spatial resolution photon counting CT imaging
Background Due to the nonlinear nature of the logarithmic operation and the stochastic
nature of photon counts (N), sinogram data of photon counting detector CT (PCD‐CT) are …
nature of photon counts (N), sinogram data of photon counting detector CT (PCD‐CT) are …
Existence, uniqueness, and efficiency of numerically unbiased attenuation pathlength estimators for photon counting detectors at low count rates
Background The first step in computed tomography (CT) reconstruction is to estimate
attenuation pathlength. Usually, this is done with a logarithm transformation, which is the …
attenuation pathlength. Usually, this is done with a logarithm transformation, which is the …
Empirical unbiased zero-count correction in photon counting CT
The correction of zero-counts is essential to enable high-quality and accurate low-dose
photon counting detector CT (PCD-CT) imaging. Prior to logarithmic normalization, it is …
photon counting detector CT (PCD-CT) imaging. Prior to logarithmic normalization, it is …
Addressing the challenge of CT number bias in low-dose photon counting CT without access to raw detector count data
In recent years there has been increased focus on further reducing radiation dose in CT with
photon counting CT using solid-state direct-conversion photon counting detectors (PCDs) to …
photon counting CT using solid-state direct-conversion photon counting detectors (PCDs) to …