Manual control of patient table for bolus-chasing CT angiography

Article type: Research Article

Authors: Bai, Henri | Zeng, Kai | Bai, Erwei | Wang, Ge

Affiliations: Electrical and Computer Engineering Department, Iowa State University, Ames, Lowa 50011, USA | Biomedical Engineering Department, University of Iowa, Ames, Lowa 50011, USA | Electrical and Computer Engineering Department, University of Iowa, Ames, Lowa 50011, USA | School of Biomedical Engineering and Science, Virginia Tech, Virginia 24061, USA

Note: [] Corresponding author. E-mail: hbai@iastate.edu

Abstract: In order to reduce contrast dose and radiation exposure involved in CT angiography, an automatic adaptive control scheme was proposed for bolus chasing, which offers substantial improvements over the conventional constant speed control scheme. In this paper, a manual control scheme is proposed to utilize the expert's knowledge optimally based on real-time imaging feedback. The technical objective is to synchronize the bolus dynamics and the imaging aperture. To test the proposed technique, a realistic simulator is designed, developed and evaluated. It is shown statistically that the manual control outperforms the traditional constant speed control.

Keywords: CT angiography, simulator, manual control

Journal: Journal of X-Ray Science and Technology, vol. 16, no. 1, pp. 23-31, 2008