There are two types of high precision Respiratory Sensor provided. They are selectable
in accordance to the modality to be used with.
 
This sensor detects pressure by using strain gauge bridge circuit. The pressure detecting part of the sensor is put to a patient with a belt, and the motion of the body surface (pressure change at the abdomen) is displayed as respiratory waveform. 
According to the motion of the abdomen, use "DEEP" or "STANDARD" properly. For a normal motion, use "STANDARD". For a larger motion, use "DEEP".
As for a modality to be used, PET-CT is the most suitable for this type of sensor, for a patient moves deeply into the gantry.
For the setting of this sensor, please see "How to set Load Cell Sensor".
 
This sensor measures the reflection of laser light (infrared). Laser light is spotted on the patient's skin, and the motion of the body surface (displacement of distance to the sensor) is displayed as respiratory waveform. There are three types of sensor with different focal length are provided: 250 mm, 120 mm and 85 mm. 
As for a modality to be used, radiotherapy equipment is the most suitable for this type of sensor, for it doesn't contact patient. For the setting of this sensor, please see"How to set Laser Sensor".
 
High-speed Gating Mode：less than 25 msec.
Normal Gating Mode：less than 50 msec. 

The Respiratory Gating System is used in combination with radiotherapy equipment and image diagnostic equipment. The biggest challenge for reducing the influence on the modality performance is the reduction of delay time. Comparing to a conventional device, it has been reduced to one fourth in High-speed Gating Mode and to a half in the Normal Gating Mode. This realizes the higher accuracy in radiotherapy or image diagnosis. High-speed Gating Mode and Normal Gating Mode are to be used in accordance to the patient's respiratory condition, treatment plan or the external equipment combined with.
*Delay time indicates the time from detecting the body surface movement due to the respiratory motion by a sensor to outputting Gate signal.
 
High Cost Performance

In the conventional respiratory gating system, it is connected to an external equipment on one-to-one basis. But, in the new respiratory gating system AZ-733VI, up to three unit of external equipment can be connected to one system (option). With this feature, the system configuration corresponding to a customer's installation condition or budget can be realized.
 
On the software, select the modality to which Gate signal is outputted.
※Gate signal cannot be output to plural modalities simultaneously.
 
Respiratory Gating System AZ-733VI is able to use up to three Respiratory Sensors at a time. Since the body surface movement caused by respiratory motion differs to each patient, getting respiratory information from multiple positions makes it possible to perform respiratory gating at the most stable position.
 
Display of three types of 
respiratory waveform separately.
 
Respiratory Gating System AZ-733VI has the function of outputting ECG & Respiratory Gate signal by connecting ECG. At any overlapped timing of ECG trigger and Respiratory Gate signal, ECG & Respiratory Gate signal is outputted to external equipment.

By controlling rotary encoder incorporated in the Sensor Port, respiratory waveform can be adjusted near a patient. In the conventional system, it is necessary to return to the control room to adjust waveform on the software after setting Respiratory Sensor to a patient, but not any more for the new system.
The waveform is also displayed on the LCD Screen of the Sensor Port, which improves the repeatability of the Sensor setting.
 
Not only to save and reproduce stored patient data, but also to comprehend the characteristics of patient's respiration, it is provided with the function of displaying the time series respiratory information as well as histogram of respiratory level and respiratory rate.
Table of Patients Data
 
Histogram of Patients Data
 
"Level to Level" Mode is newly added, which is mainly used in radiotherapy.
A phase is determined where the influence (movement) of respiratory phase is small, and there Gate signal id output to external equipment.
Regardless of inhalation or exhalation, Gate signal is output within the set level. Breath hold delivery is also available. 
 
In the above graph, Gate is output between Level 
20 – 60, which results to Gate output twice per respiratory cycle.
 
Respiratory Gating is a treatment / imaging depended on the patient respiratory condition. Respiratory Monitor is provided so that patients can watch their own respiratory waveform and consciously breathe.
Stable respiration is expected to contribute to shortening treatment and imaging time.
 
Push a button when suspending Gate output.
Just push a button in an emergency, and it will suspend Gate output.
 
When the following abnormal breathing is detected, error message is displayed on the software and stop Gate output to external equipment.
1. Abnormal breathing due to sneeze or body motion
2. Abnormal respiratory rete
3. Respiration stoppage
4. Abnormal exhalation peak
5. Abnormal inhalation peak
6. Abnormality in average breathing