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Real-time Motion Compensated ΔB(0) Shimming with an AC/DC Shim Coil and Dual-Echo vNavs

Year: 2022

Type: article

Abstract: Changes in subject position move susceptibility interfaces and therefore ΔB(0) field patterns in the brain. We apply a prospective real time (TR-to-TR) shim updating scheme using dual echo EPI volume navigators to correct motion-induced changes in ΔB(0) fields to reduce distortion in 2D EPI. Shim fields were produced by a 32 channel AC/DC head shim array. TR-to-TR shimming reduced EPI distortion in all head positions in in vivo experiments.

Source: PubMed Central

Authors: Arango, Nicolas, Frost, Robert, Wighton, Paul, Stockmann, Jason, Andronesi, Ovidiu C, van der Kouwe, Andre

Language: English

Topic: Advanced MRI Techniques and Applications

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

Open Access status: green

OpenAlex ID: W7163837164

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