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Contrast-enhanced d...
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Fredenberg, Erik,PhD,1979-KTH,Medicinsk bildfysik
(författare)
Contrast-enhanced dual-energy subtraction imaging using electronic spectrum-splitting and multi-prism x-ray lenses
- Artikel/kapitelEngelska2008
Förlag, utgivningsår, omfång ...
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San Diego, CA, USA :SPIE,2008
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electronicrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:kth-38400
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-38400URI
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https://doi.org/10.1117/12.770501DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-110856URI
Kompletterande språkuppgifter
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Språk:engelska
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Sammanfattning på:engelska
Ingår i deldatabas
Klassifikation
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:kon swepub-publicationtype
Serie
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Proceedings of the Society of Photo-Optical Instrumentation Engineers,0277-786X ;6913
Anmärkningar
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QC 20210121
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Dual-energy subtraction imaging (DES) is a method to improve the detectability of contrast agents over a lumpy background. Two images, acquired at x-ray energies above and below an absorption edge of the agent material, are logarithmically subtracted, resulting in suppression of the signal from the tissue background and a relative enhancement of the signal from the agent. Although promising, DES is still not widely used in clinical practice. One reason may be the need for two distinctly separated x-ray spectra that are still close to the absorption edge, realized through dual exposures which may introduce motion unsharpness. In this study, electronic spectrum-splitting with a silicon-strip detector is theoretically and experimentally investigated for a mammography model with iodinated contrast agent. Comparisons are made to absorption imaging and a near-ideal detector using a signal-to-noise ratio that includes both statistical and structural noise. Similar to previous studies, heavy absorption filtration was needed to narrow the spectra at the expense of a large reduction in x-ray flux. Therefore, potential improvements using a chromatic multi-prism x-ray lens (MPL) for filtering were evaluated theoretically. The MPL offers a narrow tunable spectrum, and we show that the image quality can be improved compared to conventional filtering methods.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Cederström, BjörnKTH,Medicinsk bildfysik(Swepub:kth)u1oerth9
(författare)
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Lundqvist, Mats
(författare)
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Ribbing, CarolinaUppsala universitet,Fasta tillståndets elektronik(Swepub:uu)cri24390
(författare)
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Åslund, Magnus
(författare)
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Diekmann, FelixCharité - Univ. Hospital (Germany)
(författare)
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Nishikawa, RobertUniv. of Chicago (United States)
(författare)
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Danielsson, MatsKTH,Medicinsk bildfysik(Swepub:kth)u1m3qe0f
(författare)
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KTHMedicinsk bildfysik
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Medical Imaging 2008 - Physics of Medical ImagingSan Diego, CA, USA : SPIE, s. 91310-913109780819470973
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