Meeting Banner
Abstract #0743

Passive Tracking Sequence with Positive Contrast using Partial Saturation for MR-guided Cardiac Catheterisation

Mari Nieves Velasco Forte1, Kuberan Pushparajah1, Nycholas Byrne2, Mazen Alhrishy1, Bram Ruijsink1, Israel Valverde1,3, Tobias Schaeffter1, Reza Razavi1, and S├ębastien Roujol1

1Division of Imaging Sciences & Biomedical Engineering, King's College London, London, United Kingdom, 2Medical Physics, King's College London, London, United Kingdom, 3Cardiovascular Imaging, Institute of Biomedicine of Seville, Seville, Spain

Cardiac MRI-guided catheterization offers an alternative to conventional fluoroscopy. This technique has been used in congenital heart disease for diagnostic purposes using passive tracking methods, with either CO2 or gadolinium filled balloon wedge catheters. The gadolinium filled balloon is easier to visualize. The sequence, real-time bSSFP, can be used with or without saturation prepulse, leading to either suppression of soft tissue signal or poor catheter visualization. We have developed a partial saturation pulse sequence providing high contrast between tissue, blood and balloon. After optimization in phantoms and volunteers, this sequence has shown excellent results during MR-guided catheterization in patients.

This abstract and the presentation materials are available to members only; a login is required.

Join Here