Air pressure breath gate controlling system

Abstract

The invention relates to a pneumatic respiratory gating system, which is characterized in that: the invention includes a respiratory cummerbund, a buzzer, a respiratory gating unit and a PC computer; a respiratory gating signal input port, a buzzer signal output port, a serial communication port and a gating output port are arranged on the respiratory gating unit; the respiratory gating unit includes an MCU processor and an RS232 driving circuit; the outer end of the respiratory gating signal input port is connected with the respiratory cummerbund by a gas guide pipe, the inner end is sequentially connected with a pressure sensor, a signal filter module, a signal amplifier module and an A / D conversion module, the A / D conversion module is connected with the MCU processor by a transmission line; the output port of the transmission line is connected with the buzzer, the serial communication port is connected with the PC computer by the transmission line, the gating output port is connected with an outside triggered equipment; and the MCU processor is connected with the RS232 driving circuit by the two-way transmission line. The invention is applicable to the MRI-based medical imaging equipment during using process.

Description

technical field [0001] The invention relates to a medical device, in particular to an air pressure respiratory gating system. Background technique [0002] Some medical imaging devices work under strong electric and magnetic field conditions, such as magnetic resonance imaging (MRI) systems. When these devices are used, respiratory artifacts are generated in abdominal imaging due to the patient's respiratory movement, resulting in a decrease in imaging quality and affecting Diagnosis of lesions. In the current medical imaging equipment, the common way to solve the artifacts in abdominal imaging is to wear an abdominal belt for the patient or use a respiratory gating system. The method of adopting the abdomen-retracting abdominal belt needs to tie the patient's abdomen very tightly, which will bring physical discomfort to the patient, and is especially unsuitable for abdominal diseases or severe patients. For the method of using the respiratory gating system, most of the eq...

AI Technical Summary

Problems solved by technology

For the method of using the respiratory gating system, most of the equipment on the market currently adopts the electrode type respiratory gating system. It is disturbed and affects its normal work. The use effect of the electrode respiratory gating is also affected by objective factors such as the cleanliness of the patient's skin and the doctor's operating level, and because the electrodes are disposable, it increases its use. cost

Images