Abstract #2512
Improving 4D pCASL angiography by combining Hadamard time-encoding with Look-Locker readout
Yuriko Suzuki 1 , Wouter M Teeuwisse 2 , Sophie Schmid 2 , Michael Helle 3 , Marc Van Cauteren 4 , and Matthias JP van Osch 2
1
Philips Electronics Japan, Minato-ku, Tokyo,
Japan,
2
C.J.Gorter
Center for High Field MRI, Departement of Radiology,
Leiden University Medical Center, Leiden, Netherlands,
3
Philips
Research Laboratories, Hamburg, Germany,
4
Philips
Healthcare Asia Pasific, Tokyo, Japan
Time-resolved 4D-MRA provides important information for
cerebrovascular diseases. The use of superselective
pCASL for time-resolved 4D-MRA is, however, impeded
because of the need for a long labeling duration.
Hadamard time-encoded pCASL was recently proposed as an
approach to increase the SNR and time efficiency of
multiple timing acquisitions. The purpose of this study
is to introduce a new superselective pCASL 4D-MRA
sequence which combines the Hadamard encoding pCASL and
Look-Locker readout with reduced number of phases to
achieve both 1) observation of arterial inflow phase,
and 2) better depiction of peripheral arteries at later
phases.
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