University of California

University of Florida Research Foundation Inc

Prashant Chandrasekharan

Steven M Conolly

Carlos Rinaldi

Bo Zheng

Daniel Hensley

Zhi Wei Tay

Rohan Deepak Dhavalikar

Shehaab Savliwala

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

Berkeley, CA, United States of America

Prashant Chandrasekharan