Search: onr:"swepub:oai:DiVA.org:kth-146705" >
Energy-resolved CT ...
-
Persson, MatsKTH,Medicinsk bildfysik
(author)
Energy-resolved CT imaging with a photon-counting silicon-strip detector
- Article/chapterEnglish2014
Publisher, publication year, extent ...
-
SPIE - International Society for Optical Engineering,2014
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:kth-146705
-
https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146705URI
-
https://doi.org/10.1117/12.2043519DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:kon swepub-publicationtype
Notes
-
QC 20140613
-
Photon-counting detectors are promising candidates for use in the next generation of x-ray CT scanners. Among the foreseen benefits are higher spatial resolution, better trade-off between noise and dose, and energy discriminating capabilities. Silicon is an attractive detector material because of its low cost, mature manufacturing process and high hole mobility. However, it is sometimes claimed to be unsuitable for use in computed tomography because of its low absorption efficiency and high fraction of Compton scatter. The purpose of this work is to demonstrate that high-quality energy-resolved CT images can nonetheless be acquired with clinically realistic exposure parameters using a photon-counting silicon-strip detector with eight energy thresholds developed in our group. We use a single detector module, consisting of a linear array of 50 0.5 × 0.4 mm detector elements, to image a phantom in a table-top lab setup. The phantom consists of a plastic cylinder with circular inserts containing water, fat and aqueous solutions of calcium, iodine and gadolinium, in different concentrations. We use basis material decomposition to obtain water, calcium, iodine and gadolinium basis images and demonstrate that these basis images can be used to separate the different materials in the inserts. We also show results showing that the detector has potential for quantitative measurements of substance concentrations.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Huber, BenKTH,Medicinsk bildfysik(Swepub:kth)u155wnsr
(author)
-
Karlsson, StaffanKTH,Medicinsk bildfysik(Swepub:kth)u1x1rpqq
(author)
-
Liu, XuejinKTH,Medicinsk bildfysik(Swepub:kth)u1v6qm8u
(author)
-
Chen, HanKTH,Medicinsk bildfysik(Swepub:kth)u1q2jdko
(author)
-
Xu, ChengKTH,Medicinsk bildfysik(Swepub:kth)u1as48nl
(author)
-
Yveborg, MoaKTH,Medicinsk bildfysik(Swepub:kth)u1xqdk4d
(author)
-
Bornefalk, HansKTH,Medicinsk bildfysik(Swepub:kth)u1ng8smo
(author)
-
Danielsson, MatsKTH,Medicinsk bildfysik(Swepub:kth)u1m3qe0f
(author)
-
KTHMedicinsk bildfysik
(creator_code:org_t)
Related titles
-
In:Medical Imaging 2014: SPIE - International Society for Optical Engineering, s. 90333L-9780819498267
Internet link
Find in a library
To the university's database