RF coil for MR imaging which is not visible in X-ray image

Apparatus for use in imaging of a part of a patient using Magnetic Resonance and using penetrating radiation to generate independent images in a field of view of the patient, the apparatus comprising:

• a radiation imaging system for generating a radiation image of a subject in the field of view using penetrating electromagnetic radiation;
• and
• a magnetic resonance imaging system for generating an image of the subject;
• an RF coil for use in the MR imaging system;
• the RF coil being arranged to remain in place during the radiation imaging and including coil conductive traces located in the field of view of the radiation imaging system;
• the RF coil including a support board on which the conductive traces are carried;
• the conductive traces of the RF coil being arranged of a conductive material which has a thickness such that the traces cause an attenuation of the penetrating electromagnetic radiation which is visible in the radiation image;
• the support board including non-conductive material in the field of view which has a thickness selected such that an attenuation of the penetrating electromagnetic radiation at locations on the board spaced from the traces is substantially equal to the attenuation at locations on the board at the conductive traces.