CONFERENCE PROCEEDINGS
Advanced Search >
Home > Proceedings > Volume 9033 > Article
19 March 2014 Characterization of a hybrid energy-resolving photon-counting detector
A. Zang, G. Pelzer, G. Anton, R. Ballabriga Sune, F. Bisello, M. Campbell, A. Fauler, M. Fiederle, X. Llopart Cudie, I. Ritter, F. Tennert, S. Wölfel, W. S. Wong, T. Michel
Author Affiliations +
Proceedings Volume 9033, Medical Imaging 2014: Physics of Medical Imaging; 90333M (2014) https://doi.org/10.1117/12.2043526
Event: SPIE Medical Imaging, 2014, San Diego, California, United States
Abstract
Photon-counting detectors in medical x-ray imaging provide a higher dose efficiency than integrating detectors. Even further possibilities for imaging applications arise, if the energy of each photon counted is measured, as for example K-edge-imaging or optimizing image quality by applying energy weighting factors. In this contribution, we show results of the characterization of the Dosepix detector. This hybrid photon- counting pixel detector allows energy resolved measurements with a novel concept of energy binning included in the pixel electronics. Based on ideas of the Medipix detector family, it provides three different modes of operation: An integration mode, a photon-counting mode, and an energy-binning mode. In energy-binning mode, it is possible to set 16 energy thresholds in each pixel individually to derive a binned energy spectrum in every pixel in one acquisition. The hybrid setup allows using different sensor materials. For the measurements 300 μm Si and 1 mm CdTe were used. The detector matrix consists of 16 x 16 square pixels for CdTe (16 x 12 for Si) with a pixel pitch of 220 μm. The Dosepix was originally intended for applications in the field of radiation measurement. Therefore it is not optimized towards medical imaging. The detector concept itself still promises potential as an imaging detector. We present spectra measured in one single pixel as well as in the whole pixel matrix in energy-binning mode with a conventional x-ray tube. In addition, results concerning the count rate linearity for the different sensor materials are shown as well as measurements regarding energy resolution.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
A. Zang, A. Zang, G. Pelzer, G. Pelzer, G. Anton, G. Anton, R. Ballabriga Sune, R. Ballabriga Sune, F. Bisello, F. Bisello, M. Campbell, M. Campbell, A. Fauler, A. Fauler, M. Fiederle, M. Fiederle, X. Llopart Cudie, X. Llopart Cudie, I. Ritter, I. Ritter, F. Tennert, F. Tennert, S. Wölfel, S. Wölfel, W. S. Wong, W. S. Wong, T. Michel, T. Michel, "Characterization of a hybrid energy-resolving photon-counting detector", Proc. SPIE 9033, Medical Imaging 2014: Physics of Medical Imaging, 90333M (19 March 2014); doi: 10.1117/12.2043526; https://doi.org/10.1117/12.2043526
ACCESS THE FULL ARTICLE
PERSONAL SIGN IN
Full access may be available with your subscription
 
Forgot your username?
Forgot your password?
No SPIE account? Create an account
or Institutional Sign In via Shibboleth
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $14.40
Non-members: $18.00 ADD TO CART
PROCEEDINGS
 7 PAGES
DOWNLOAD PDF + SAVE TO MY LIBRARY
SHARE
GET CITATION
< Previous Article
|
Next Article >
KEYWORDS
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top