Cart (Loading....) | Create Account
Close category search window
 

Systematic investigation of the reconstruction of images from transmission tomography using a filtered backprojection and an iterative OSML reconstruction algorithm

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

6 Author(s)
Ziegler, A. ; Philips Res. Lab., Hamburg, Germany ; Heuscher, D. ; Kohler, Th. ; Nielsen, T.
more authors

The reconstruction of 2D images from fan-beam transmission measurements is performed with filtered-backprojection (FBP) and an ordered subsets maximum likelihood (OSML) method. A special software phantom, which allows measuring the resolution and noise in a non-ambiguous way, is used to simulate transmission tomography scans with different signal-to-noise ratios. The noise and modulation transfer function is calculated for both FBP and OSML reconstruction at several positions distributed over the field of view (FOV). The OSML method is able to achieve a nearly homogeneous high resolution over the whole field-of-view, which is not possible with FBP, because the OSML reconstruction from the focus-centered projections intrinsically uses the improvement of the resolution due to the quarter detector offset without any extra re-binning. In addition, the reconstruction with OSML has a higher resolution than FBP at a similar level of noise, or equivalent, the OSML method achieves a lower level of noise compared to FBP at the same resolution. The reconstruction with OSML can save a factor of about 2 of dose with respect to FBP.

Published in:

Nuclear Science Symposium Conference Record, 2004 IEEE  (Volume:4 )

Date of Conference:

16-22 Oct. 2004

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.