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Proceedings Paper

Interventional C-arm tomosynthesis for vascular imaging: initial results
Author(s): David A. Langan; Bernhard E. H. Claus; Omar Al Assad; Yves Trousset; Cyril Riddell; Gregoire Avignon; Stephen B. Solomon M.D.; Hao Lai; Xin Wang
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Paper Abstract

As percutaneous endovascular procedures address more complex and broader disease states, there is an increasing need for intra-procedure 3D vascular imaging. In this paper, we investigate C-Arm 2-axis tomosynthesis (“Tomo”) as an alternative to C-Arm Cone Beam Computed Tomography (CBCT) for workflow situations in which the CBCT acquisition may be inconvenient or prohibited. We report on our experience in performing tomosynthesis acquisitions with a digital angiographic imaging system (GE Healthcare Innova 4100 Angiographic Imaging System, Milwaukee, WI). During a tomo acquisition the detector and tube each orbit on a plane above and below the table respectively. The tomo orbit may be circular or elliptical, and the tomographic half-angle in our studies varied from approximately 16 to 28 degrees as a function of orbit period. The trajectory, geometric calibration, and gantry performance are presented. We overview a multi-resolution iterative reconstruction employing compressed sensing techniques to mitigate artifacts associated with incomplete data reconstructions. In this work, we focus on the reconstruction of small high contrast objects such as iodinated vasculature and interventional devices. We evaluate the overall performance of the acquisition and reconstruction through phantom acquisitions and a swine study. Both tomo and comparable CBCT acquisitions were performed during the swine study thereby enabling the use of CBCT as a reference in the evaluation of tomo vascular imaging. We close with a discussion of potential clinical applications for tomo, reflecting on the imaging and workflow results achieved.

Paper Details

Date Published: 18 March 2015
PDF: 8 pages
Proc. SPIE 9412, Medical Imaging 2015: Physics of Medical Imaging, 94125N (18 March 2015); doi: 10.1117/12.2081195
Show Author Affiliations
David A. Langan, GE Global Research Ctr. (United States)
Bernhard E. H. Claus, GE Global Research Ctr. (United States)
Omar Al Assad, GE Global Research Ctr. (United States)
Yves Trousset, GE Healthcare (France)
Cyril Riddell, GE Healthcare (France)
Gregoire Avignon, GE Healthcare (France)
Stephen B. Solomon M.D., Memorial Sloan-Kettering Cancer Ctr. (United States)
Hao Lai, GE Global Research Ctr. (United States)
Xin Wang, GE Global Research Ctr. (United States)

Published in SPIE Proceedings Vol. 9412:
Medical Imaging 2015: Physics of Medical Imaging
Christoph Hoeschen; Despina Kontos, Editor(s)

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