Inversion recovery prepared turbo spin echo sequences with reduced SAR using smooth transitions between pseudo steady states.

Inversion recovery prepared turbo spin echo sequences with reduced SAR using smooth transitions between pseudo steady states. Research Abstract Details 

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Inversion recovery prepared turbo spin echo sequences with reduced SAR using smooth transitions between pseudo steady states. Abstract Text:

Matthias Weigel,Maxim Zaitsev,Juergen Hennig,Matthias Weigel,Maxim Zaitsev,Juergen Hennig,

This study investigates the contrast behavior of 2D inversion recovery (IR) prepared turbo spin echo (TSE) sequences that use RF pulse schemes with variable low flip angles (hyperTSE) to reduce RF power deposition. A framework of equations and calculations for adapting the sequence parameters is presented by which equivalent image contrast is achieved compared to conventional IR-TSE imaging. Although the inversion time (TI) and repetition time (TR) do not need to be changed, the echo time (TE) has to be prolonged such that the effective TE (TE(eff)) is preserved. Measurements in healthy volunteers confirmed this finding for IR-TSE sequences using different TIs: fluid attenuated inversion recovery (FLAIR), gray matter (GM)-white matter (WM)-IR, and short tau IR (STIR). The results demonstrate that hyperTSE sequences enable high-quality IR-prepared imaging with a considerably reduced specific absorption rate (SAR).

Inversion recovery prepared turbo spin echo sequences with reduced SAR using smooth transitions between pseudo steady states. Publishing Authors By Initials

M Weigel,M Zaitsev,J Hennig,M Weigel,M Zaitsev,J Hennig,

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Inversion recovery prepared turbo spin echo sequences with reduced SAR using smooth transitions between pseudo steady states. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Magnetic resonance in medicine : official journal

VOLUME: 57

Page Numbers: 631-7

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ISSN: 0740-3194

DAY: 5

MONTH: Mar

YEAR: 2007

Inversion recovery prepared turbo spin echo sequences with reduced SAR using smooth transitions between pseudo steady states. Information

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LANGUAGE: eng

NlmUniqueID: 8505245

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Grant and Affiliation Information for Inversion recovery prepared turbo spin echo sequences with reduced SAR using smooth transitions between pseudo steady states.

AFFILIATION: Department of Diagnostic Radiology, Medical Physics, University Hospital Freiburg, Freiburg, Germany. Matthias.Weigel@uniklinik-freiburg.de

Country: United States

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MEDLINETA: Magn Reson Med

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