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A photon-counting detector for dual-energy breast tomosynthesis
KTH, School of Engineering Sciences (SCI), Physics, Medical Imaging.
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2009 (English)In: Medical Imaging 2009: Physics of Medical Imaging, 2009, Vol. 7258, 72581- p.Conference paper, Published paper (Refereed)
Abstract [en]

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.

Place, publisher, year, edition, pages
2009. Vol. 7258, 72581- p.
Series
Progress in Biomedical Optics and Imaging - Proceedings of SPIE, ISSN 1605-7422
Keyword [en]
Dual-energy subtraction, Energy resolution, Mammography, Photon counting, Spatial resolution, Tomosynthesis
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Other Physics Topics
Identifiers
URN: urn:nbn:se:kth:diva-86513DOI: 10.1117/12.813037Scopus ID: 2-s2.0-66749148423ISBN: 978-081947509-1 (print)OAI: oai:DiVA.org:kth-86513DiVA: diva2:500781
Conference
Medical Imaging 2009: Physics of Medical Imaging; Lake Buena Vista, FL; 9 February 2009 through 12 February 2009
Note
QC 20120215Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2012-02-15Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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