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Abstract #3332

Correct K-space coordinates and gradient coupled $$$B_0$$$ variation for Spiral imaging using the current monitor

Tzu-Cheng Chao1, Jürgen Rahmer2, Sandeep Ganji3, Guruprasad Krishnamoorthy3, Peter Börnert2, and James G. Pipe1
1Department of Radiology, Mayo Clinic, Rochester, MN, United States, 2Philips Research, Hamburg, Germany, 3Philips Healthcare, Gainesville, FL, United States

Error from inaccurate eddy current assessment has been a critical issue in spiral imaging. A model is established to estimate both the gradient field and its induced B0 variation from the measured current of the gradient amplifier. The correction improves the geometric consistency between both spiral-in and spiral-out images. The results suggest that the present work have potential to improve quality of spiral imaging.

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