scholarly journals Increased SNR efficiency in velocity selective arterial spin labeling using multiple velocity selective saturation modules (mm-VSASL)

2014 ◽  
Vol 74 (3) ◽  
pp. 694-705 ◽  
Author(s):  
Jia Guo ◽  
Eric C. Wong
Keyword(s):  
Arterial Spin Labeling ◽  
Spin Labeling ◽  
Selective Saturation ◽  
Snr Efficiency

scholarly journals The advantages of radial trajectories for vessel-selective dynamic angiography with arterial spin labeling

2019 ◽  
Author(s):  
Eleanor S. K. Berry ◽  
Peter Jezzard ◽  
Thomas W. Okell
Keyword(s):  
Arterial Spin Labeling ◽  
Parallel Imaging ◽  
Spin Labeling ◽  
Dynamic Imaging ◽  
Calibration Data ◽  
Time Resolved ◽  
High Acceleration Factor ◽  
High Acceleration ◽  
Snr Efficiency ◽  
Rule Out

AbstractObjectTo demonstrate the advantages of radial k-space trajectories over conventional Cartesian approaches for accelerating the acquisition of vessel-selective arterial spin labeling (ASL) dynamic angiograms, which are conventionally time-consuming to acquire.Materials and MethodsVessel-encoded pseudocontinuous ASL was combined with time-resolved balanced steady-state free precession (bSSFP) and spoiled gradient echo (SPGR) readouts to obtain dynamic vessel-selective angiograms arising from the four main brain-feeding arteries. Dynamic 2D protocols with acquisition times of one minute or less were achieved through radial undersampling or a Cartesian parallel imaging approach. For whole-brain dynamic 3D imaging, magnetic field inhomogeneity and the high acceleration factors required rule out the use of bSSFP and Cartesian trajectories, so the feasibility of acquiring 3D radial SPGR angiograms was tested.ResultsThe improved SNR efficiency of bSSFP over SPGR was confirmed for 2D dynamic imaging. Radial trajectories had considerable advantages over a Cartesian approach, including a factor of two improvement in the measured SNR (p<0.00001, N=6), improved distal vessel delineation and the lack of a need for calibration data. The 3D radial approach produced good quality angiograms with negligible artifacts despite the high acceleration factor (R=13).ConclusionRadial trajectories outperform conventional Cartesian techniques for accelerated vessel-selective ASL dynamic angiography.

Arterial Spin Labeling erleichtert Diagnose von Meningeomrezidiven

2019 ◽  
Vol 09 (02) ◽  
pp. 107-108
Keyword(s):  
Arterial Spin Labeling ◽  
Spin Labeling

Non-invasive assessment of cerebral blood flow using selective MR-Arterial Spin Labeling (ASL): First Experience

2010 ◽  
Vol 41 (01) ◽  
Author(s):  
R Wiest ◽  
K Jann ◽  
J Gralla ◽  
M Hauf ◽  
J Wang ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Arterial Spin Labeling ◽  
Spin Labeling ◽  
Non Invasive

Arterial spin labeling (ASL) MRT zur Perfusionsquantifizierung in der Mamma-MRT: eine Machbarkeitsstudie

2012 ◽  
Vol 184 (S 01) ◽  
Author(s):  
S Buchbender ◽  
S Obenauer ◽  
S Hepp ◽  
C Buchbender ◽  
FR Miese ◽  
...  
Keyword(s):  
Arterial Spin Labeling ◽  
Spin Labeling

Mit Arterial-Spin-Labeling Gliome charakterisieren

2017 ◽  
Vol 07 (03) ◽  
pp. 169-169
Keyword(s):  
Arterial Spin Labeling ◽  
Spin Labeling

Perfusionsbildgebung der Lungen mit Arterial-Spin-Labeling

2005 ◽  
Vol 177 (S 01) ◽  
Author(s):  
A Boss ◽  
P Martirosian ◽  
H Graf ◽  
J Schäfer ◽  
F Schick
Keyword(s):  
Arterial Spin Labeling ◽  
Spin Labeling

Arterial Spin Labeling Evaluation of Migraine: A Clinical Vignette

Neurographics ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 187-190
Author(s):  
J.R. Cagley ◽  
J.M. Pollock
Keyword(s):  
Arterial Spin Labeling ◽  
Spin Labeling ◽  
Clinical Vignette
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