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Attenuation map reconstruction from TOF PET data
Qingsong Yang, Wenxiang Cong, Ge Wang
To reconstruct a radioactive tracer distribution with positron emission tomography (PET), the background attenuation correction is needed to eliminate image artifacts. Recent resea…
Top-level Design and Pilot Analysis of Low-end CT Scanners Based on Linear Scanning for Developing Countries
Fenglin Liu, Hengyong Yu, Wenxiang Cong +1
Purpose: The goal is to develop a new architecture for computed tomography (CT) which is at an ultra-low-dose for developing countries, especially in rural areas. Methods: The prop…
Meaning of Interior Tomography
Ge Wang, Hengyong Yu
The classic imaging geometry for computed tomography is for collection of un-truncated projections and reconstruction of a global image, with the Fourier transform as the theoretic…
Dynamic Bowtie for Fan-beam CT
Fenglin Liu, Ge Wang, Wenxiang Cong +2
A bowtie is a filter used to shape an x-ray beam and equalize its flux reaching different detector channels. For development of spectral CT with energy-discriminative photon-counti…
Analytic Comparison between X-ray Fluorescence CT and K-edge CT
Peng Feng, Ge Wang, Wenxiang Cong +1
X-ray fluorescence computed tomography (XFCT) and K-edge computed tomography (CT) are two important modalities to quantify a distribution of gold nanoparticles (GNPs) in a small an…