First CT-MRI Scanner for Multi-dimensional Synchrony and Multi-physical Coupling

TL;DR

This paper introduces the design of the first combined CT-MRI scanner aimed at advancing multimodal imaging for radiation therapy and biomedical research, utilizing a novel magnet configuration and compressive sensing reconstruction.

Contribution

It presents a pioneering prototype of a dual-modality CT-MRI scanner with a unique magnet setup and multi-energy CT capability, enabling new biomedical applications.

Findings

Design of a double donut-shaped magnet system for uniform magnetic field

Implementation of a triple-energy CT with stationary gantry

Use of compressive sensing for image reconstruction

Abstract

We propose to prototype the first CT-MRI scanner for radiation therapy and basic research, demonstrate its transformative biomedical potential, and initiate a paradigm shift in multimodality imaging. Our design consists of a double donut-shaped pair of permanent magnets to form a regionally uniform ~0.5T magnetic field and leave room for a stationary 9-source interior CT gantry at 3 tube voltages (triple-energy CT). Image reconstruction will be in a compressive sensing framework. Please discuss with Dr. Ge Wang (ge-wang@ieee.org) if you are interested in collaborative opportunities.