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Abstract #2451

Flexible Echo Time Selection for In-Phase-like Body QSM Acquisitions

Christof Böhm1, Jakob Meineke2, Kilian Weiss3, Marcus R. Makowski1, and Dimitrios C. Karampinos1
1Department of Diagnostic and Interventional Radiology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Germany, Munich, Germany, 2Philips Research, Hamburg, Germany, Hamburg, Germany, 3Philips GmbH Market DACH, Hamburg, Germany, Hamburg, Germany

Synopsis

Keywords: Susceptibility/QSM, Susceptibility, Fat/Water Separation

Motivation: Gradient echo imaging using in-phase echoes has been proposed to simplify the fieldmap estimation in water–fat regions. The use of so-called effective multi-peak in-phase echo times allow for the bias-free QSM estimation in body regions in the presence of complex fat-models. Conventionally, the in-phase paradigm rigidly constrains the selection of echo times, often balancing acquisition speed, resolution, and SNR against one another.

Goal(s): .

Approach: .

Results: This study demonstrates the feasibility of a nearly unrestricted selection of the first echo time, without introducing significant quantification bias. This advance allows for a more flexible and efficient imaging process.

Impact: This work introduces a simple, flexible and bias-free body QSM acquisition strategy based on so-called pseudo in-phase echos that allows for considerably faster acquisitions while simultaneously increasing the SNR efficiancy

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Keywords