Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
558947 | Biomedical Signal Processing and Control | 2008 | 8 Pages |
Abstract
In this paper, a new adaptive bolus-chasing control scheme is proposed to synchronize the bolus peak in a patient's vascular system and the imaging aperture of a computed tomography (CT) scanner. The proposed control scheme is theoretically evaluated and experimentally tested on a modified Siemens SOMATOM Volume Zoom CT scanner. The first set of experimental results is reported on bolus-chasing CT angiography using realistic bolus dynamics, real-time CT imaging and adaptive table control with physical vasculature phantoms. The data demonstrate that the proposed control approach tracks the bolus propagation well, and clearly outperforms the constant-speed scheme that is the current clinical standard.
Keywords
Related Topics
Physical Sciences and Engineering
Computer Science
Signal Processing
Authors
Zhijun Cai, Colbin Erdahl, Kai Zeng, Tom Potts, Melhem Sharafuddin, Osama Saba, Ge Wang, Er-Wei Bai,