Technical Program

Paper Detail

Paper:	SU-AM-PS1.5
Session:	X-Ray CT, PET and SPECT Imaging
Time:	Sunday, April 9, 10:50 - 12:10
Presentation:	Poster
Title:	Motion Compensation for 3D Tomographic Reconstruction of Stent in X-Ray Cardiac Rotational Angiography
Authors:	Béatrice Perrenot; General Electric Healthcare / CREATIS, UMR CNRS 5515 / Inserm U630 / INSA Lyon / UCB Lyon
	Régis Vaillant; General Electric Healthcare
	Rémy Prost; CREATIS, UMR CNRS 5515; Inserm U630; INSA Lyon; UCB Lyon
	Gérard Finet; CREATIS / Hôpital Cardiovasculaire Louis Pradel, Hospices Civils de Lyon
	Philippe Douek; CREATIS / Hôpital Cardiovasculaire Louis Pradel, Hospices Civils de Lyon
	Françoise Peyrin; CREATIS, UMR CNRS 5515; Inserm U630; INSA Lyon; UCB Lyon
Abstract:	This paper presents a novel method for 3D tomographic reconstruction of stent in X-Ray cardiac rotational angiography. The method relies on 2D motion compensation of the projected image from two radiopaque markerballs located on each side of the stent. The two markerballs are on a guidewire, which is introduced in the artery. Under the assumption that the guidewire and the stent have the same motion during rotational acquisition, we propose an algorithm to correct locally cardiac stent motion on the 2D X-Ray projection images. After correction, the 3D image of the deployed stent is reconstructed using the classical Feldkamp algorithm. Although the correction is an approximation, results on realistic simulated sequences demonstrate the efficiency of the method.

ISBI 2006 is sponsored by

and organized in cooperation with