University of California

University of Florida Research Foundation Inc

Agency for Science, Technology and Research

Zhi Wei Tay

Steven M Conolly

Carlos Rinaldi

Bo Zheng

Daniel Hensley

Teck Hock Lee

Shehaab Savliwala

Prashant Chandrasekharan

Rohan Deepak Dhavalikar

This invention relates to a portable magnetic particle imaging (MPI) device. The portable MPI device comprises a handheld probe and a processing unit. The handheld probe comprises a main housing a first sensor coil, a second sensor coil, a transmitter coil arranged between the first and second sensor coils, and an excitation priming frame housing magnetic component and the processing unit comprises a transmitter communicatively connected to the transmitter coil and the excitation priming frame, a receiver communicatively connected to the first and second sensor coils.

Portable handheld magnetic particle imaging

A magnetic particle imaging system that includes a magnetic field generating system with at least one magnet and providing a gradient magnetic field within an observation region such that the gradient magnetic field has a dynamic field-free region (FFR) for an object under observation having strongly-interacting magnetic particles distributed therein. The magnetic field generating system also includes a drive field and a slow shift field that dynamically shifts the FFR across a field of view (FOV) within the observation region, where the trajectory of the drive field accommodates for a coercivity of the strongly-interacting magnetic particles by ensuring that the particles in the FOV are saturated to a full coercivity field prior to traversing to an opposite-polarity of coercivity. The magnetic particle imaging system also includes a detection system proximate the observation region and configured to detect a signal from the strongly-interacting magnetic particles. The magnetic particle imaging system further includes signal processor in communication with the detection system, configured to receive and process the detected signal to remove a coercivity shift due to the coercivity of the strongly-interacting magnetic particles, and convert the processed detection signal into an image of the strongly-interacting magnetic particles.

Strongly-interacting magnetic particle imaging

Growing community of inventors

Singapore, Singapore

Zhi Wei Tay