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Sheared two‐dimensional radiofrequency excitation for off‐resonance robustness and fat suppression in reduced field‐of‐view imaging

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Two‐dimensional (2D) echo‐planar radiofrequency (RF) pulses are widely used for reduced field‐of‐view (FOV) imaging in applications such as diffusion‐weighted imaging. However, long pulse durations render the 2D RF pulses sensitive… Click to show full abstract

Two‐dimensional (2D) echo‐planar radiofrequency (RF) pulses are widely used for reduced field‐of‐view (FOV) imaging in applications such as diffusion‐weighted imaging. However, long pulse durations render the 2D RF pulses sensitive to off‐resonance effects, causing local signal losses in reduced‐FOV images. This work aims to achieve off‐resonance robustness for 2D RF pulses via a sheared trajectory design.

Keywords: resonance robustness; two dimensional; field view; radiofrequency; reduced field; resonance

Journal Title: Magnetic Resonance in Medicine
Year Published: 2022

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