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Abstract #4331

Free–breathing SASHA (fbSASHA) for accurate whole-heart T1 measurement

Bowei Liu1, Rui Guo2, and Haiyan Ding1
1Center for Biomedical Imaging Research, School of Biomedical Engineering, Tsinghua University, Beijing, China, 2School of Medical Technology, Beijing Institute of Technology, Beijing, China

Synopsis

Keywords: Myocardium, Myocardium, free-breathing, SASHA

Motivation: Conventional SASHA T1 mapping requires breath- holding coordination.

Goal(s): To obtain whole-heart covered T1 maps under free-breathing state.

Approach: SASHA protocol was extended by introducing respiratory sync via slice tracking technique and acquisition in an interleaved manner for free-breathing pattern.

Results: Free-breathing SASHA and breath-hold SASHA demonstrated excellent T1 measurement consistency and comparable image quality.

Impact: The proposed free-breathing SASHA sequence (fbSASHA) is capable of eliminating the impact of patients' cooperation in breath-holding. Additionally, it offers whole-heart coverage field-of-view, facilitating superior detection of focal myocardial lesions.

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