T2-selective magnetization preparation pulses.

T2-selective magnetization preparation pulses. Research Abstract Details 

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T2-selective magnetization preparation pulses. Abstract Text:

Logi Vidarsson,Charles Cunningham,Garry E Gold,John M Pauly,

The purpose of this work was to present and evaluate a new method for directly designing T2-selective preparation pulses. Using a modified Shinnar-Le-Roux (SLR) transform, the design of T2-selective pulses becomes equivalent to designing a pair of polynomials one of which represents the longitudinal magnetization and the other the transverse magnetization. The polynomials enable one to directly analyze the various tradeoffs involved in the design. To evaluate the new method, a short-T2-selective magnetization preparation pulse was designed. Following the preparation pulse, a 2D Fourier transform (2DFT) multislice gradient echo sequence was used for imaging. For verification Bloch equation simulations were performed along with both in vivo and phantom scans. Phantom scans showed good signal suppression of long-T2 species. This is supported by good long-T2 signal suppression seen on the in vivo images. Simulations indicate that the pulse is robust to +/-150 Hz B0 inhomogeneities and +/-10% B1 inhomogeneities.

T2-selective magnetization preparation pulses. Publishing Authors By Initials

L Vidarsson,C Cunningham,GE Gold,JM Pauly,

For similar information science: computing methodologies: signal processing, computer-assisted research abstracts see: information science: computing methodologies: signal processing, computer-assisted research

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T2-selective magnetization preparation pulses. Journal Published:

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

Journal: IEEE transactions on medical imaging

VOLUME: 26

Page Numbers: 981-9

Journal Abbreviation:

ISSN: 0278-0062

DAY: 3

MONTH: Jul

YEAR: 2007

T2-selective magnetization preparation pulses. Information

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LANGUAGE: eng

NlmUniqueID: 8310780

T2-selective magnetization preparation pulses. Keywords Mesh Terms:

KEYWORDS: Signal Processing, Computer-Assisted

MESH TERMS: methods

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Grant and Affiliation Information for T2-selective magnetization preparation pulses.

AFFILIATION: Department of Medical Imaging and Medical Biophysics, The Hospital for Sick Children, University of Toronto, ON, Canada. logi@sickkids.ca

Country: United States

AGENCY: United States NIBIB

GRANT: EB002524-01

ACRONYM: EB

MEDLINETA: IEEE Trans Med Imaging

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