Hybrid CT-MRI system

A hybrid computed tomography (CT) magnetic resonance imaging (MRI) system, the system comprising:

• a CT subsystem comprising an x-ray source, and an x-ray detector positioned on a rotatable support;
• and
• a magnetic resonance (MR) subsystem comprising a first magnet-coil assembly and a second magnet-coil assembly, the first magnet-coil assembly comprising a first magnet structure and a first gradient coil and the second magnet-coil assembly comprising a second magnet structure and a second gradient coil, the first magnet-coil assembly and the second magnet-coil assembly separated by a gap, the gap configured to facilitate transmission of an x-ray beam from the x-ray source to the x-ray detector, wherein the first gradient coil and second gradient coil are positioned at least partially within the first magnet structure and second magnet structure, respectively, with an outer curved surface of the first gradient coil and second gradient coil adjacent to an outer curved surface of the first magnet structure and second magnet structure, respectively, and wherein the rotatable support comprises a cylindrical shape having an inner surface coupled to an outer curved surface of the first magnet structure, and in which the rotatable support is coupled to the first magnet structure such that the rotatable support rotates the x-ray tube and x-ray detector while the first magnet structure remains stationary.