Design of non-selective refocusing pulses with phase-free rotation axis by gradient ascent pulse engineering algorithm in parallel transmission at 7T

[Display omitted] ► We report a new MRI radiofrequency pulse design algorithm based on optimal control. ► Spin refocusing non-uniformities are addressed using tailored RF pulses. ► The target rotation matrix is synthesized with a phase-free rotation axis. ► In vitro spin-echo experiments demonstrate...

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Vydáno v:	Journal of magnetic resonance (1997) Ročník 230; s. 76 - 83
Hlavní autoři:	Massire, Aurélien, Cloos, Martijn A., Vignaud, Alexandre, Le Bihan, Denis, Amadon, Alexis, Boulant, Nicolas
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	United States Elsevier Inc 01.05.2013
Témata:	Algorithms Equipment Design Equipment Failure Analysis Image Enhancement - instrumentation Image Enhancement - methods Magnetic Resonance Imaging - instrumentation Magnetic Resonance Imaging - methods Optimal control Parallel transmission Phantoms, Imaging Phase free Refocusing Reproducibility of Results RF inhomogeneities Sensitivity and Specificity Signal Processing, Computer-Assisted - instrumentation Spin echo Transducers Refocusing Spin echo Phase free RF inhomogeneities Optimal control Parallel transmission
ISSN:	1090-7807, 1096-0856, 1096-0856
On-line přístup:	Získat plný text
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