PT Unknown
AU Aura Hernandez-Sabate
   David Rotger
   Debora Gil
TI Image-based ECG sampling of IVUS sequences
BT Proc. IEEE Ultrasonics Symp. IUS 2008
PY 2008
BP 1330
EP 1333
DI 10.1109/ULTSYM.2008.0322
DE Longitudinal Motion; Image-based ECG-gating; Fourier analysis
AB Longitudinal motion artifacts in IntraVascular UltraSound (IVUS) sequences hinders a properly 3D reconstruction and vessel measurements. Most of current techniques base on the ECG signal to obtain a gated pullback without the longitudinal artifact by using a specific hardware or the ECG signal itself. The potential of IVUS images processing for phase retrieval still remains little explored. In this paper, we present a fast forward image-based algorithm to approach ECG sampling. Inspired on the fact that maximum and minimum lumen areas are related to end-systole and end-diastole, our cardiac phase retrieval is based on the analysis of tissue density of mass along the sequence. The comparison between automatic and manual phase retrieval (0.07 ± 0.07 mm. of error) encourages a deep validation contrasting with ECG signals.
ER