Development of an auxiliary system for the execution of vascular catheter interventions with a reduced radiological risk; system description and first experimental results

Authors:
Giuseppe Placidi;Danilo Franchi;Luca Marsili;Pasquale Gallo
Affiliations:
INFM, c/o Department of Science and Biomedical Technologies, University of L'Aquila, Via Vetoio 10, 67100 Coppito, L'Aquila, Italy;INFM, c/o Department of Science and Biomedical Technologies, University of L'Aquila, Via Vetoio 10, 67100 Coppito, L'Aquila, Italy;INFM, c/o Department of Science and Biomedical Technologies, University of L'Aquila, Via Vetoio 10, 67100 Coppito, L'Aquila, Italy;Department of Internal Medicine and Public Health, University of L'Aquila, Delta 6, 67100 Coppito, L'Aquila, Italy
Venue:
Computer Methods and Programs in Biomedicine
Year:
2007

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Abstract

Vascular catheterization is a common procedure in clinical medicine. It is normally performed by a specialist using an X-ray fluoroscopic guide and contrast-media. In the present paper, an image-guided navigation system which indicates a path providing guidance to the desired target inside the vascular tree is described with the aim of reducing the exposure of personnel and patients to X-rays during the catheterization procedure. A 3D model of the patient vascular tree, reconstructed with data collected by an angiography before starting the intervention, is used as a guide map instead of fluoroscopic scans. An accurate spatial correspondence between the body of the patient and the 3D reconstructed vascular model is established and, by means of a position indicator installed over the catheter tip, the real-time position/orientation of the tip is indicated correctly. This paper describes the system and the operational procedures necessary to use the proposed method efficiently during a catheter intervention. Preliminary experimental results on a phantom are also reported.