- Poster presentation
- Open Access
Improved R-wave detection for enhanced cardiac Gating using an MRI-compatible 12-lead ECG and multi-channel analysis
© Tse et al; licensee BioMed Central Ltd. 2011
- Published: 2 February 2011
- Sinus Rhythm
- Premature Ventricular Contraction
- Channel Axis
- Heart Rate Variation
- Arrhythmia Patient
An important requirement for successful cardiac MRI is accurate gating. However, obtaining proper Electrocardiogram (ECG) gating inside the MRI is a difficult problem, due to the Magneto-Hydro-Dynamic (MHD) effect, resulting in frequent intermittent gating. The MHD effect generates a voltage due to conductive blood flow perpendicular to B0, and distorts the real ECG. Intermittent gating also occurs when arrhythmia patients incur several events of arrhythmia between their sinus rhythm (SR) beats, resulting in blurred images. We hypothesized that a novel real-time 3-D gating method could accurately detect the QRS complex, even in difficult cases, such as with Premature Ventricular Contractions (PVCS), non-stable heart rate (atrial fibrillation, exercise), imaged at both 1.5 and 3T MRIs.
The gating method, based on a unique 3-D ECG representation, allows accurate R-wave detection and separation of beat types even with strong MHD signals.
- Tse : ISMRM. 2010Google Scholar
This article is published under license to BioMed Central Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.