X-ray energy spectrum plays an essential role in imaging and related tasks. Due to the high
photon flux of clinical CT scanners, most of the spectrum estimation methods are indirect …

An x-ray energy spectrum plays an essential role in computed tomography (CT) imaging and
related tasks. Because of the high photon flux of clinical CT scanners, most of the spectrum …

X-ray spectrum plays an essential role in CT applications. Since it is difficult to measure x-
ray spectrum directly in practice, x-ray spectrum is always indirectly obtained by using …

X-ray energy spectrum plays an important role in computed tomography (CT) reconstruction
and artifact suppression. Most methods utilize the principles of projection domain to estimate …

There has been much recent research effort directed toward spectral computed tomography
(CT). An important step in realizing spectral CT is determining the spectral response of the …

Purpose We study the problem of spectrum estimation from transmission data of a known
phantom. The goal is to reconstruct an x‐ray spectrum that can accurately model the x‐ray …

Background The energy spectrum is the property of the X-ray tube that describes the energy
fluence per unit interval of photon energy. The existing indirect methods for estimating the …

X-ray spectrum plays an essential role in CT applications. Since it is difficult to measure X-
ray spectrum directly in practice, X-ray spectrum is always indirectly obtained by using …

The characteristics of an x-ray spectrum can greatly influence imaging and related tasks. In
practice, due to the pile-up effect of the detector, it's difficult to directly measure the spectrum …

This paper presents a method for estimating the x-ray energy spectrum for computed
tomography (CT) in the diagnostic energy range from the reconstructed CT image itself. To …