scholarly journals Cardiac magnetic resonance parallel imaging at 3.0 Tesla: Technical feasibility and advantages

2004 ◽  
Vol 19 (3) ◽  
pp. 291-297 ◽  
Author(s):  
Kiaran P. McGee ◽  
Josef P. Debbins ◽  
Ed B. Boskamp ◽  
LeRoy Blawat ◽  
Lisa Angelos ◽  
...  
Keyword(s):  
Cardiac Magnetic Resonance ◽  
Magnetic Resonance ◽  
Parallel Imaging ◽  
3.0 Tesla ◽  
Technical Feasibility

scholarly journals Analysis of physiological noise in quantitative cardiac magnetic resonance

2019 ◽  
Author(s):  
Terrence Jao ◽  
Krishna Nayak
Keyword(s):  
Cardiac Magnetic Resonance ◽  
Magnetic Resonance ◽  
Parallel Imaging ◽  
Signal To Noise Ratio ◽  
Acceleration Factor ◽  
Physiological Noise ◽  
Matrix Size ◽  
Cardiac Mr ◽  
Bssfp Imaging ◽  
The Impact

AbstractPurposeTo determine the impact of imaging parameters on the temporal signal-to-noise ratio (TSNR) of quantitative cardiac magnetic resonance (MR) in humans, and to determine applicability of the physiological noise covariance (PNC) model for physiological noise (PN).MethodsWe conducted MRI experiments in four healthy volunteers, and obtained series of short-axis cardiac images acquired with snapshot balanced steady-state free precession (bSSFP) and snapshot gradient echo (GRE) using a broad range of spatial resolutions and parallel imaging acceleration factors commonly used in quantitative cardiac MR. We measured regional SNR and TSNR in these datasets and fit the measurements to the PNC model for PN, which assumes that PN scales with signal strength.ResultsThe relationship between SNR and TSNR in human cardiac MR without contrast preparation was well modeled by the PNC model. SNR consistently decreased as the spatial resolution (matrix size) and acceleration factor (R) increased for both GRE and bSSFP imaging. TSNR varied linearly with SNR using GRE imaging, when SNR was low (SNR < 20), and approached an asymptotic limit using bSSFP imaging, when SNR was high (SNR > 40).ConclusionsThe PNC model can be used to guide the choice of matrix size and acceleration factor to optimize TSNR in stable contrast cardiac MR, such as T2-prepared Blood-Oxygen-Level-Dependent (BOLD) and several variants of Arterial Spin Labeled (ASL) cardiac MR.

Renal Magnetic Resonance Angiography at 3.0 Tesla Using a 32-Element Phased-Array Coil System and Parallel Imaging in 2 Directions

2006 ◽  
Vol 41 (9) ◽  
pp. 697-703 ◽  
Author(s):  
Michael Fenchel ◽  
Kambiz Nael ◽  
Vibhas S. Deshpande ◽  
J Paul Finn ◽  
Ulrich Kramer ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Parallel Imaging ◽  
Phased Array ◽  
3.0 Tesla ◽  
Coil System ◽  
Phased Array Coil ◽  
Array Coil

Comprehensive Cardiac Magnetic Resonance Imaging at 3.0 Tesla

2006 ◽  
Vol 41 (2) ◽  
pp. 154-167 ◽  
Author(s):  
Matthias Gutberlet ◽  
Ralph Noeske ◽  
Kerstin Schwinge ◽  
Patrick Freyhardt ◽  
Roland Felix ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Cardiac Magnetic Resonance ◽  
Magnetic Resonance ◽  
Cardiac Magnetic Resonance Imaging ◽  
Resonance Imaging ◽  
3.0 Tesla
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