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Respiratory Gating System AZ-733VI is intended to be used with diagnostic X-ray or radiation therapy systems to gate these devices on and off when target points of the patient's respiratory cycle are within preset limits.

The Respiratory Gating System AZ-733VI employs a respiratory sensor which can be fixed directly to or near to a patient, and detects the respiratory motion changes according to the type of sensor, the Load Cell (standard component), the Laser Sensor (option component) or the IRP Sensor (option component). The signal from the sensor is primarily amplified at the Amp Box which is attached to each Respiratory Sensor and sent to the Sensor Port as an analog signal. At the Sensor Port, the analog signal is coarsely adjusted manually, converted to digital signal, smoothed by moving-average method and processed to detect a respiratory phase. Then, as a respiratory information, the respiratory waveform and the respiratory phase are sent to the Application on the Personal Computer via the Relay Box. The Application performs the fine adjustment of the selected respiratory waveform by the user manually or automatically. The user also sets a Gate signal output condition and selects a mode for the method of generating Gate signal. This Gate signal is output to external equipment (image diagnostic equipment such as a whole body CT equipment, linear accelerator system and radiotherapy equipment) from the Relay Box or the Sensor Port when those respiratory signals reach the preset conditions set by the user. The status of the Gate signal ON and OFF is also displayed on the LCD Display. The Application has a function of managing patient information. This function involves the input, registration, referring, revision and delete of patient information. The Application also provides the function of recording, playback, referring and output by a text file format of respiratory information and Gate signal ON/OFF status as well as Beam signal ON/OFF status.