Meeting Banner
Abstract #2184

High Resolution Simulation of B0 Field Conditions in the Human Heart Based on Segmented CT Images

Yun Shang1, Sebastian Theilenberg1, Wolfram Mattar2, Maxim Terekhov2, Sachin R Jambawalikar3, Laura M Schreiber2,4, and Christoph Juchem1,3

1Department of Biomedical Engineering, Columbia University in the City of New York, New York, NY, United States, 2Section of Medical Physics, Department of Radiology, Mainz University Hospital, Mainz, Germany, 3Department of Radiology, Columbia University in the City of New York, New York, NY, United States, 4Department of Cellular and Molecular Imaging, Comprehensive Heart Failure Center (CHFC), Wuerzburg, Germany

B0 inhomogeneity leads to dark band artifacts in cardiac MRI, in particular with the use of steady-state free precession (SSFP) pulse sequences. Limited spatial resolution of MRI-derived in vivo B0 maps and, moreover, the lack of population data prevents the systematic analysis of the problem at hand and the development of optimized B0 shim strategies. We used readily available CT images to derive the B0 conditions in the human heart at very high resolution. Calculated cardiac B0 fields showed consistency with MRI-based B0 measurements and local field artifacts concur with typical dark band locations. The approach is expected to enable the development of population-specific B0 shim strategies for the human heart.

This abstract and the presentation materials are available to members only; a login is required.

Join Here