Abstract #3635

Optimization of B0 Simulation Strategy in the Human Heart based on CT Images at limited Field of View

Yun Shang¹, Sebastian Theilenberg¹, Laura M. Schreiber^2,3, and Christoph Juchem^1,4

¹Department of Biomedical Engineering, Columbia University, New York, NY, United States, ²Chair of Cellular and Molecular Imaging, Comprehensive Heart Failure Center, University Hospital Wuerzburg, Wuerzburg, Germany, ³Department of Cardiovascular Imaging, Comprehensive Heart Failure Center, University Hospital Wuerzburg, Wuerzburg, Germany, ⁴Department of Radiology, Columbia University Medical Center, New York, NY, United States

B₀ simulation in the heart based on thoracic CT images is a powerful tool to investigate cardiac B₀ conditions in the general population for the development of an optimized cardiac B₀ shimming strategy. Thoracic CT scans typically have a limited field of view posing a challenge to the accuracy of field simulations. Here we present a systematic analysis of errors introduced by B₀ computations in the human heart from CT-based susceptibility distributions of limited field of view and present strategies to resemble B₀ conditions in the human heart to achieve elevated accuracy with model-based addition of selected anatomical features.

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