Abstract: A fluid injection arrangement, in the context of patient imaging systems, in which phases of contrast medium injection and flushing medium injection can be freely and selectably ordered so as to make available to the operator and patient a vast array of possible protocols that has hitherto been essentially unattainable. Also contemplated is the use of a “hold” phase, involving an indefinite pause between phases of a protocol, in connection with such imaging systems. Further contemplated is the use of a “pause” phase in which a pause of fixed duration is pre-programmed into the protocols of MRI injector systems.

Abstract: A brake rotor having a brake ring, first and second opposing braking surfaces, and inner and outer peripheral surfaces connecting the braking surfaces. A plurality of apertures are disposed through the brake ring and extend between the two braking surfaces. A ceramic coating, for providing thermal insulation, is disposed at least on the two braking surfaces.