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Self-refocusing 270° gaussian pulses for slice selection without gradient reversal in magnetic resonance imaging

✍ Scribed by Lyndon Emsley; Geoffrey Bodenhausen

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
537 KB
Volume
10
Category
Article
ISSN
0740-3194

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✦ Synopsis

It is demonstrated, on the grounds of simulations, how 270" Gaussian pulses can be used for slice selection in nuclear magnetic resonance imaging experiments. It is shown that the usual gradient reversal procedure can be omitted if the selective 90" pulse normally used is replaced by a self-refocusing 270" pulse with a Gaussian timedomain amplitude profile, and some of the properties which are specific to this type of pulse are explored.

📜 SIMILAR VOLUMES

On the use of a slice-selective 270° sel
On the use of a slice-selective 270° self-refocusing Gaussian pulse for magnetic resonance imaging
✍ David M. Doddrell; Graham J. Galloway; Stephen E. Rose; Peter J. Moulds; Ian M. 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 254 KB 👁 1 views

Theoretical and experimental results are presented demonstrating that the slice intensity resulting from a self-refocusing 270" Gaussian pulse (L. Elmsley and G. Bodenhausen, Magn. Reson. in Med. 10, 273, 1989) is approximately 60% of that following an appropriately refocused 90" GaUSSian pulse.