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

Adaptive bolus chasing Computed Tomography Angiography: Modeling, identification, control and experimental results

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

3 Author(s)
Zhijun Cai ; Dept. of Electr. & Comput. Eng., Univ. of Iowa, Iowa City, IA, USA ; Bai, E.-W. ; Ge Wang

In a Computed Tomography Angiography (CTA) exam, synchronization of contrast peak in the vasculature and the x-ray aperture is highly desirable. The current existing method of moving CT scanner table constantly is far from ideal and needs large amount of contrast material for compensation. We propose an adaptive bolus chasing method, which ensures a high Contrast to Noise Ratio (CNR) of the vascular images in CTA and potentially reduces the radiation exposure and contrast usage. The proposed method is based on a local time and space parameter varying model of the contrast bolus. Optimal scan time for the next segment of the vasculature is estimated and predicted in real time and guides the CT scanner table movement which guarantees that each segment of the vasculature is scanned with the maximum possible enhancement. Simulation and experimental results show that the proposed bolus-chasing method outperforms the conventional constant-speed method substantially.

Published in:

Decision and Control (CDC), 2010 49th IEEE Conference on

Date of Conference:

15-17 Dec. 2010

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.