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Multishot 3D slice-select tailored RF pulses for MRI by V. Andrew Stenger; Fernando E. Boada; Douglas C. Noll is a Medicine article available to read on EtoBox.

What is Multishot 3D slice-select tailored RF pulses for MRI about?

A multishot 3D slice-select tailored RF pulse method is presented for the excitation of slice profiles with arbitrary resolution. This method is derived from the linearity of the small tip angle approximation, allowing for the decomposition of small tip angle tailored RF pulses into separate excitations. The final image is created by complex summation of the images acquired from the individual excitations. This technique overcomes the limitation of requiring a long pulse to excite thin slices with adequate resolution. This has implications in applications including T\*(2)-weighted functional MRI in brain regions corrupted by intravoxel dephasing artifacts due to susceptibility variations. Simulations, phantom experiments, and human brain images are presented. It is demonstrated that at most four shots of 40 ms pulse length are needed to excite a 5 mm-thick slice in the brain with reduced susceptibility artifacts at 3T.

Who reads Multishot 3D slice-select tailored RF pulses for MRI?

Author

V. Andrew Stenger; Fernando E. Boada; Douglas C. Noll

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0740-3194)

Published

2002

Language

EN

Field

Medicine (Health Sciences)