Abstract #3417

Isotropic sub-mm bSSFP imaging near metal at 0.55T

Kübra Keskin¹, Nam G. Lee², Jay Acharya³, and Krishna S. Nayak^1,2

¹Electrical and Computer Engineering, University of Southern California, Los Angeles, CA, United States, ²Biomedical Engineering, University of Southern California, Los Angeles, CA, United States, ³Radiology, University of Southern California, Los Angeles, CA, United States

Synopsis

Keywords: Artifacts, Artifacts, MetalAt conventional field strengths, the large magnetic susceptibility difference between metallic implants and surrounding tissues causes severe artifacts often requiring multi-spectral imaging. Recent low-field MRI systems offers new opportunities for imaging adjacent to metallic implants, including balanced SSFP. Here, we utilize phase-cycled bSTAR, a short-TR 3D dual-echo radial bSSFP sequence, for isotropic 3D banding artifact free imaging near metallic implants at 0.55T. We demonstrate diagnostic quality images in volunteers with wrist and spinal hardware with high SNR efficiency compared to TSE-based sequences.

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