The General Hospital Corporation

Clarissa Zimmerman-Cooley

Lawrence Leroy Wald

Patrick C McDaniel

Sai Abitha Srinivas

Stephen Farman Cauley

A single-sided magnet and magnetic resonance imaging ('MRI') system are portable and lightweight, enabling use as a point-of care (“POC”) MRI device. The portable MRI system includes a magnet assembly containing layers of magnet blocks, such as rare-earth magnet blocks. The magnet blocks are arranged in concentric rings in each layer, and surround a central aperture extending through the magnet assembly. The central aperture is sized to allow a medical instrument, such as a needle, to pass through the central aperture. The portable MRI system can therefore be used for image guidance in lumbar puncture (“LP”) and other medical procedures.

Point-of-care magnetic resonance imaging system for lumbar puncture guidance

Asymmetric, single-channel radio frequency ('RF') coils are provided for use with portable or other low-field magnetic resonance imaging (“MRI”) systems. In general, the asymmetric, single-channel RF coils make use of asymmetric, optimized winding configurations in order to reduce B1+ inhomogeneities and to reduce signal sensitivity outside of the desired imaging field-of-view (“FOV”).

Asymmetric single-channel radio frequency helmet coil for magnetic resonance imaging

Electromagnetic interference ('EMI') is mitigated for portable magnetic resonance imaging (“MRI”) systems using postprocessing interference suppression techniques that make use of EMI detectors external to the MRI system imaging volume to detect EMI signals and remove them from acquired magnetic resonance data. EMI correction models, including static transfer function-based models, dynamic transfer function-based models, correction weight-based models, or parallel imaging kernel-based models can be used to remove the EMI-related artifacts from the magnetic resonance data.

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Boston, MA, United States of America

Clarissa Zimmerman-Cooley