Change search
ReferencesLink to record
Permanent link

Direct link
Imaging with multi-prism x-ray lenses
KTH, School of Engineering Sciences (SCI), Physics, Medical Imaging.
KTH, School of Engineering Sciences (SCI), Physics, Medical Imaging.
KTH, School of Engineering Sciences (SCI), Physics, Medical Imaging.ORCID iD: 0000-0002-7725-0548
Show others and affiliations
2008 (English)In: Medical Imaging 2008 - Physics of Medical Imaging: PTS 1-3 / [ed] Hsieh, J; Samei, E, 2008, Vol. 6913, 91308-91308 p.Conference paper (Refereed)
Abstract [en]

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).

Place, publisher, year, edition, pages
2008. Vol. 6913, 91308-91308 p.
, Progress in Biomedical Optics and Imaging - Proceedings of SPIE, ISSN 0277-786X ; 6913
Keyword [en]
mammography, x-ray optics, multi-prism lens, pre-breast slit-collimator, x-ray flux, acquisition time, resolution
National Category
Biomedical Laboratory Science/Technology
URN: urn:nbn:se:kth:diva-38399DOI: 10.1117/12.770434ISI: 000256660300006ScopusID: 2-s2.0-43149103955ISBN: 978-0-8194-7097-3OAI: diva2:437807
Medical Imaging 2008 - Physics of Medical Imaging; San Diego, CA; 18 February 2008 through 21 February 2008
Available from: 2011-08-30 Created: 2011-08-25 Last updated: 2011-08-30Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Fredenberg, ErikCederström, BjörnNillius, PeterDanielsson, Mats
By organisation
Medical Imaging
Biomedical Laboratory Science/Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 24 hits
ReferencesLink to record
Permanent link

Direct link