The invention relates to an MRT device with a superconducting magnet whose coils are located in a helium tank and with electronic control components whereby a section of control components is located inside the helium tank or the helium tank has a hollow depression in its outer surface in which a section of the control components is located. The invention also relates to an MRT device with a superconducting magnet whose coils are located in a helium tank which is located in a vacuum vessel and with electronic control components whereby the helium tank has a hollow depression in its outer surface and whereby the vacuum vessel has a further hollow depression in its outer surface which is located in the area of the hollow depression in the helium tank whereby a section of the control components is located in the further hollow depression in the vacuum vessel.