A gamma camera having a scintillation detector formed of multiple rotating bar detector modules arranged in a ring configuration, with synchronized spin motion of each module. The air cleaner is arranged in a rearward manner of a connection of an upper end of the rear cushion and the body frame, and the connection is arranged substantially just below the intake passage. When the inputoutput level sensed by the carrier sensor is less than a specified level, the transmission-reception controller allows internal radio communication by operating the transmissionreception units. The flange includes attachment structure configured to fix the flange to a support structure. The receiving STA then processes the received data to generate a reconstructed media stream, which provides signal quality equal to or better than the signal quality supported by the base sub-stream.