Abstract #1014

Spiral imaging trajectory mapping using high density 25-channel field probe array

Ying-Hua Chu ¹ , Yi-Cheng Hsu ¹ , and Fa-Hsuan Lin ¹

¹ Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan

We developed a 2D 25-channel probe array in order to monitor the k-space trajectory and to use the calibrated k-space trajectory to improve the reconstruction of a spiral scan. Images reconstructed using magnetic field estimates up to the 1st order polynomial show the most prominent improvement in homogeneity and anatomical details. Further information from the 2nd and 3rd order field distribution estimates only improved the reconstruction marginally.

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