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A photon-counting d...
A photon-counting detector for dual-energy breast tomosynthesis
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- Fredenberg, Erik, PhD, 1979- (författare)
- KTH,Medicinsk bildfysik
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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, Björn (författare)
- KTH,Medicinsk bildfysik
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- Danielsson, Mats (författare)
- KTH,Medicinsk bildfysik
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(creator_code:org_t)
- SPIE, 2009
- 2009
- Engelska.
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Ingår i: Medical Imaging 2009. - : SPIE. ; , s. 72581-
- Relaterad länk:
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https://kth.diva-por... (primary) (Raw object)
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http://arxiv.org/pdf...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Radiologi och bildbehandling (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Radiology, Nuclear Medicine and Medical Imaging (hsv//eng)
Nyckelord
- Dual-energy subtraction
- Energy resolution
- Mammography
- Photon counting
- Spatial resolution
- Tomosynthesis
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)