Discrimination Between Calcium Hydroxyapatite and Calcium Oxalate Using Multienergy Spectral Photon-Counting CT.
Details
Serval ID
serval:BIB_301E1CE1DD0F
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Discrimination Between Calcium Hydroxyapatite and Calcium Oxalate Using Multienergy Spectral Photon-Counting CT.
Journal
AJR. American journal of roentgenology
ISSN
1546-3141 (Electronic)
ISSN-L
0361-803X
Publication state
Published
Issued date
11/2017
Peer-reviewed
Oui
Volume
209
Number
5
Pages
1088-1092
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Abstract
We aimed to determine whether multienergy spectral photon-counting CT could distinguish between clinically relevant calcium crystals at clinical x-ray energy ranges. Energy thresholds of 15, 22, 29, and 36 keV and tube voltages of 50, 80, and 110 kVp were selected. Images were analyzed to assess differences in linear attenuation coefficients between various concentrations of calcium hydroxyapatite (54.3, 211.7, 808.5, and 1169.3 mg/cm(3)) and calcium oxalate (2000 mg/cm(3)).
The two lower concentrations of hydroxyapatite were distinguishable from oxalate at all energy thresholds and tube voltages, whereas discrimination at higher concentrations depended primarily on the energy thresholds used. Multienergy spectral photon-counting CT shows promise for distinguishing these calcium crystals.
The two lower concentrations of hydroxyapatite were distinguishable from oxalate at all energy thresholds and tube voltages, whereas discrimination at higher concentrations depended primarily on the energy thresholds used. Multienergy spectral photon-counting CT shows promise for distinguishing these calcium crystals.
Keywords
calcium hydroxyapatite, calcium oxalate, ectopic calcifications, linear attenuation coefficients, multienergy spectral photon-counting CT
Pubmed
Web of science
Create date
03/11/2017 17:16
Last modification date
20/08/2019 14:14