Features

High Performance/Respiratory sensors selectable in accordance to modality/Respiratory sensors selectable in accordance to modality

Extensibility/High cost performance/Usable of multiple sensors/Output of ECG & Respiratory gating signal

Convenience/Easy waveform adjustment/Display of the respiratory volume as absolute value/Enhanced File management

Optimization/Addition of new Gate output mode/Addition of Respiratory monitor

Safety Function/Gate output suspension in an emergency/Detection of abnormal breathing

High Performance

Respiratory Gating System AZ-733VI has evolved the basic performance required to 
respiratory gating system.

Respiratory Sensor Selectable in Accordance to Modality

There are two types of high precision Respiratory Sensor provided. They are selectable
in accordance to the modality to be used with.

Load Cell Sensor(patient contact type)

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".

Load Cell Sensor(patient contact type)

Laser sensor (patient non-contact type)

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".

oad Cell Sensor(patient contact type)

Reduction of Delay Time

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.

Reduction of Delay Time

Extensibility

Respiratory Gating System AZ-733VI has unprecedented extensible features and it 
provides with new possibility and connectivity.

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.

up to three unit of external equipment can be connected to one system

On the software, select the modality to which Gate signal is outputted.

On the software, select the modality to which Gate signal is outputted.
※Gate signal cannot be output to plural modalities simultaneously.

Use of Multiple Sensors

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.

Use of Multiple Sensors

Display of three types of
respiratory waveform separately.
respiratory waveform

ECG & Respiratory Gate Output

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.

ECG & Respiratory Gate signal

Convenience 

With the improvement of usability and the enhanced file management function, 
the application has aimed to satisfy worldwide users.

Easy Respiratory Waveform Adjustment

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.

Sensor Port

Enhanced Patient Data Management

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
Table of Patients Data

Histogram of Patients Data
Histogram of Patients Data

Optimization

Optimization of respiratory gating (shorter treatment/ imaging time) reduces patients' burdens.

Addition of New Gate Output Mode

"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.

Level to Level Mode

In the above graph, Gate is output between Level
20 – 60, which results to Gate output twice per respiratory cycle.

Addition of Respiratory Monitor

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.

Respiratory Monitor

Safety Function

With original safety function, Gate output can be controlled and used safely.

Gate Output Suspension in an Emergency

Push a button when suspending Gate output.
Just push a button in an emergency, and it will suspend Gate output.

Gate Output Suspension in an Emergency

Detection of Abnormal Breathing

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