Abstract: A cardiac pacing apparatus has a source of pacing pulses that are transmitted through the animal by a radio frequency signal. An electrode-stent is implanted in a blood vessel adjacent to the point at which stimulation is desired. The electrode-stent contains an electrical circuit that is tuned to the radio frequency signal and which responds to receipt of that signal by applying an electric current to tissue of the animal.

Abstract: A plurality of magnetic field induction coils and a radio frequency (RF) detection coil are supported by a frame which is inserted into the bore of an MRI system to detect magnetic fields produced by gradient pulses and RF pulses produced during a scan. The detected magnetic fields are processed to produce gradient waveforms and RF pulse waveforms that are displayed to the user.

Abstract: A cardiac pacing apparatus has a source of pacing pulses that are transmitted through the animal by a radio frequency signal. An electrode-stent is implanted in a blood vessel adjacent to the point at which stimulation is desired. The electrode-stent contains an electrical circuit that is tuned to the radio frequency signal and which responds to receipt of that signal by applying an electric current to tissue of the animal.

Abstract: A method and apparatus for configuring a large CT detector using a plurality of smaller X-ray type detector panels wherein the panels are sized and arranged in side by side fashion to extend across a fan beam and so that where conjugate rays generated during acquisition always include at least one ray that subtends a detector panel and generates a collected signal even where the other ray in the conjugate pair is directed at a gap between panels, the method further including, after data is acquired, interpolating across each gap and then combining the interpolated data across the gaps with the collected signals to generate back projection data for each of the gap directed rays.