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Abstract #1199

Type-III NUFFT Image Reconstruction for a 65 mT Single-Sided Prostate MRI Scanner with Non-Linear Gradient Fields

Meredith Sadinski1, Ram Narayanan1, Alek Nacev1, and William A Grissom2
1Promaxo, Oakland, CA, United States, 2Biomedical Engineering, Vanderbilt University, Nashville, TN, United States


Single-sided low-field MRI scanners can provide image guidance during interventions such as prostate biopsies without restricting surgical access. However, image reconstruction from these scanners is challenging due to the non-linearity of their gradient fields and inhomogeneous B0 fields. At the same time, non-Cartesian sampling is desirable for these scanners to maximize SNR efficiency and provide self-navigation. In this work, we report a fast iterative 3D Type-III NUFFT reconstruction for a 65 mT single-sided prostate imager, with non-linear single-sided gradient fields and a built-in B0 gradient field. The reconstruction was compared with a model-based reconstruction for a high-bandwidth radial RARE acquisition.

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