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Imaging with multi-...
Imaging with multi-prism x-ray lenses
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- Fredenberg, Erik, PhD, 1979- (författare)
- KTH,Medicinsk bildfysik,Albanova VinnExcellence Center for Protein Technology, ProNova
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- Cederström, Björn (författare)
- KTH,Medicinsk bildfysik,Albanova VinnExcellence Center for Protein Technology, ProNova
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Åslund, Magnus (författare)
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- Nillius, Peter (författare)
- KTH,Medicinsk bildfysik,Albanova VinnExcellence Center for Protein Technology, ProNova
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Lundqvist, Mats (författare)
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- Danielsson, Mats (författare)
- KTH,Medicinsk bildfysik,Albanova VinnExcellence Center for Protein Technology, ProNova
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(creator_code:org_t)
- SPIE, 2008
- 2008
- Engelska.
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Ingår i: Medical Imaging 2008 - Physics of Medical Imaging. - : SPIE. - 9780819470973 ; , s. 91308-91308
- Relaterad länk:
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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
- The multi-prism lens (MPL) is a refractive x-ray lens consisting of two rows of prisms facing each other at an angle. Rays entering the lens at the periphery will encounter a larger number of prisms than will central ones, hence experiencing a greater refraction. The focusing effect of the MPL can be used to gather radiation from a large aperture onto a smaller detector, and accordingly to make better use of the available x-ray flux in medical x-ray imaging. Potential advantages of a better photon economy include shorter acquisition times, a reduced tube loading, or an improved resolution. Since the focusing effect is one-dimensional it matches the design of scanning systems. In this study we present the first images acquired with an MPL instead of the pre-breast slit collimator in a scanning mammography system. According to the measurements, the MPL is able to increase the flux 32% at equal resolution compared to the slit collimator, or to improve the resolution 2.4 mm(-1) at equal flux. If used with a custom-made absorption filter in a clinical set-up, the gain of flux of the MPL is expected to be at least 45%, and the corresponding improvement in resolution to be 3 mm(-1).
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinsk bioteknologi -- Biomedicinsk laboratorievetenskap/teknologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Medical Biotechnology -- Biomedical Laboratory Science/Technology (hsv//eng)
Nyckelord
- mammography
- x-ray optics
- multi-prism lens
- pre-breast slit-collimator
- x-ray flux
- acquisition time
- resolution
- Medical technology
- Medicinsk teknik
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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