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

Comparative study of two flat-panel X-ray detectors applied to small-animal imaging cone-beam micro-CT

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

10 Author(s)
Sisniega, Alejandro ; Unidad de Medicina y Cirug?a Experimental, Hospital General Universitario Gregorio Mara??n, Madrid, Spain ; Vaquero, Juan Jose ; Lage, Eduardo ; de Carlos, Alvaro
more authors

This work compares two different X-ray flat-panel detectors for its use in high-speed, cone-beam CT applied to small-animal imaging. The main differences between these two devices are the scintillators and the achievable frame rate. Both devices have been tested in terms of system linearity, sensitivity, resolution, stability and noise properties, taking into account the different timing schemes for each one of them and the mandatory corrections on the raw data. Tomographic scans have been carried out using both detectors to evaluate its final performance as well as the delivered dose needed to achieve similar quality scans. An experimental cone-beam CT test-bench has been designed and implemented to perform the different measurements. It uses a micro-focus X-ray source and a rotating stage where the samples are placed. A modified FDK algorithm has been used to reconstruct the acquired data. Both detectors show similar results for pixel linearity and stability measurements, and their noise levels are comparable. The resolution and sensitivity features are better for the direct grown scintillator detector (9 lpmm vs. 6 lpmm, and ∼4 times more sensitive for similar delivered dose). Since tomographic reconstructed images for the higher frame-rate detector show acceptable quality, it can be used to implement a faster system for high-speed acquisition techniques like, for example, dynamic imaging or gated protocols.

Published in:

Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE

Date of Conference:

19-25 Oct. 2008

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.