Abstract: An r.f. coil arrangement for use in a magnetic resonance imaging apparatus includes conductors etched on either side of a circuit board. Corresponding portions of conductors locating on opposite sides of the circuit board overlap so as to form a plurality of capacitors which provide electrical connection for current flowing in the coil. The conductors on the first side of the circuit board form a spiral in which the current flows from the outside of the spiral to the inside. The conductors on the second side form a spiral in which the current flows from the inside of the spiral to the outside. Auxiliary conductor portions may be readily disconnected from the main conductors so that the value of the capacitors may be adjusted.

Abstract: Shielded gradient coils are adapted for use in an MR imaging apparatus having spaced apart pole pieces. The x, y, and z coils each include a active and shield layers. The x-active and shield layers are interconnected by a plurality of vertical electrical connections extending around the periphery of the coil. The y-active and shield layers are similarly connected. The z-active and shield layers each have a generally spiral conductor pattern.

Abstract: This invention relates to a method of electron spin resonance enhanced magnetic resonance imaging which relies on ex vivo dynamic nuclear polarisation of an MR imaging agent.