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A photon-counting d...
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Fredenberg, Erik,PhD,1979-KTH,Medicinsk bildfysik
(författare)
A photon-counting detector for dual-energy breast tomosynthesis
- Artikel/kapitelEngelska2009
Förlag, utgivningsår, omfång ...
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SPIE,2009
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electronicrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:kth-86513
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-86513URI
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https://doi.org/10.1117/12.813037DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:kon swepub-publicationtype
Anmärkningar
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QC 20120215
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We present the first evaluation of a recently developed silicon-strip detector for photon-counting dual-energy breast tomosynthesis. The detector is well suited for tomosynthesis with high dose efficiency and intrinsic scatter rejection. A method was developed for measuring the spatial resolution of a system based on the detector in terms of the three-dimensional modulation transfer function (MTF). The measurements agreed well with theoretical expectations, and it was seen that depth resolution was won at the cost of a slightly decreased lateral resolution. This may be a justifiable trade-off as clinical images acquired with the system indicate improved conspicuity of breast lesions. The photon-counting detector enables dual-energy subtraction imaging with electronic spectrumsplitting. This improved the detectability of iodine in phantom measurements, and the detector was found to be stable over typical clinical acquisition times. A model of the energy resolution showed that further improvements are witn reach by optimization of the detector.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Lundqvist, Mats
(författare)
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Åslund, Magnus
(författare)
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Hemmendorff, Magnus
(författare)
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Cederström, BjörnKTH,Medicinsk bildfysik(Swepub:kth)u1oerth9
(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 2009: SPIE, s. 72581-
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