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Dual-energy CT (DECT) strengthens the material characterization and quantification due to its capability of material discrimination. The image-domain multi-material decomposition (MMD) via matrix inversion suffers from serious degradation of the signal-to-noise ratios (SNRs) of the decomposed images and thus the clinical application of DECT is limited. In this work, we propose a noise suppression algorithm based on the noise propagation for image-domain MMD.
This article was published in the following journal.
Name: IEEE transactions on bio-medical engineering
Dual-energy CT, as well as spectral CT, has a great potential in material decomposition. However, dual-energy CT is difficult to apply to multi-material decomposition because the number of energy bins...
Dual-energy CT (DECT) has been increasingly used in imaging applications because of its capability for material differentiation. However, material decomposition suffers from magnified noise from two C...
We show that several types of isotropic image filters in the wavevector domain can be implemented with a single photonic crystal slab device. Such a slab is designed so that the guided resonance near ...
Multi-energy CT acquires simultaneous multiple x-ray attenuation measurements from different energy spectra which facilitates the computation of virtual monoenergetic images (VMI) at a specific photon...
The jerky dynamics of domain walls driven by applied magnetic fields in disordered ferromagnets-the Barkhausen effect-is a paradigmatic example of crackling noise. We study Barkhausen noise in disorde...
Dual beam Doppler Fourier-domain Optical coherence tomography (DOCT) is a noninvasive technique to quantify total retinal blood flow. To enable further development of this technique it is...
This study will evaluate patients who have achieved virologic suppression (< 400 copies/mL) on any dual protease inhibitor (PI) combination, to determine whether patients can substitute bo...
The main objective of this study is to demonstrate the non-inferiority of SPECT image quality (as measured by the signal / noise ratio) obtained by ASIR reconstruction of very-low-dose CT ...
This study sought to investigate the changes in attention in older adults with mild cognitive impairment after Multi-domain Attention Training .
Radiation dose reduction has been a primary driver of technology development in multi-detector computed tomography (MDCT). The optimization of radiation dose for patient and task specific ...
A method of delineating blood vessels by subtracting a tissue background image from an image of tissue plus intravascular contrast material that attenuates the X-ray photons. The background image is determined from a digitized image taken a few moments before injection of the contrast material. The resulting angiogram is a high-contrast image of the vessel. This subtraction technique allows extraction of a high-intensity signal from the superimposed background information. The image is thus the result of the differential absorption of X-rays by different tissues.
Noise present in occupational, industrial, and factory situations.
Noise associated with transportation, particularly aircraft and automobiles.
Hearing loss due to exposure to explosive loud noise or chronic exposure to sound level greater than 85 dB. The hearing loss is often in the frequency range 4000-6000 hertz.
Substances that are energetically unstable and can produce a sudden expansion of the material, called an explosion, which is accompanied by heat, pressure and noise. Other things which have been described as explosive that are not included here are explosive action of laser heating, human performance, sudden epidemiological outbreaks, or fast cell growth.