Respiratory and cardiac self‐gated free‐breathing cardiac CINE imaging with multiecho 3D hybrid radial SSFP acquisition
Open Access
- 23 April 2010
- journal article
- research article
- Published by Wiley in Magnetic Resonance in Medicine
- Vol. 63 (5), 1230-1237
- https://doi.org/10.1002/mrm.22306
Abstract
A respiratory and cardiac self‐gated free‐breathing three‐dimensional cine steady‐state free precession imaging method using multiecho hybrid radial sampling is presented. Cartesian mapping of the k‐space center along the slice encoding direction provides intensity‐weighted position information, from which both respiratory and cardiac motions are derived. With in plan radial sampling acquired at every pulse repetition time, no extra scan time is required for sampling the k‐space center. Temporal filtering based on density compensation is used for radial reconstruction to achieve high signal‐to‐noise ratio and contrast‐to‐noise ratio. High correlation between the self‐gating signals and external gating signals is demonstrated. This respiratory and cardiac self‐gated, free‐breathing, three‐dimensional, radial cardiac cine imaging technique provides image quality comparable to that acquired with the multiple breath‐hold two‐dimensional Cartesian steady‐state free precession technique in short‐axis, four‐chamber, and two‐chamber orientations. Functional measurements from the three‐dimensional cardiac short axis cine images are found to be comparable to those obtained using the standard two‐dimensional technique. Magn Reson Med 63:1230–1237, 2010.Keywords
This publication has 31 references indexed in Scilit:
- Inflow quantification in three‐dimensional cardiovascular MR imagingJournal of Magnetic Resonance Imaging, 2008
- A dual‐projection respiratory self‐gating technique for whole‐heart coronary MRAJournal of Magnetic Resonance Imaging, 2008
- 2D free‐breathing dual navigator‐gated cardiac function validated against the 2D breath‐hold acquisitionJournal of Magnetic Resonance Imaging, 2008
- Free‐breathing cine MRIMagnetic Resonance in Medicine, 2008
- Prospective self‐gating for simultaneous compensation of cardiac and respiratory motionMagnetic Resonance in Medicine, 2008
- Respiratory self‐gated four‐dimensional coronary MR angiography: A feasibility studyMagnetic Resonance in Medicine, 2008
- Whole‐heart cine MRI using real‐time respiratory self‐gatingMagnetic Resonance in Medicine, 2007
- Rapid fat‐suppressed isotropic steady‐state free precession imaging using true 3D multiple‐half‐echo projection reconstructionMagnetic Resonance in Medicine, 2005
- Electrocardiograph-independent, “wireless” cardiovascular cine MR imagingJournal of Magnetic Resonance Imaging, 1991
- Extraction of cardiac and respiratory motion cycles by use of projection data and its applications to nmr imagingMagnetic Resonance in Medicine, 1990