Medical ultrasound scanner is a diagnostic tool widely used in the medical field, which can provide intuitive images of the internal structure and function of the human body. However, to ensure its accuracy and reliability, it is necessary to regularly calibrate and maintain it. This article will explore the calibration and maintenance techniques of medical ultrasound scanners to ensure their safe and effective application in clinical practice.

2、 Calibration of medical ultrasound scanners

The purpose and significance of calibration

Calibration is the testing and adjustment of the accuracy and precision of medical ultrasound scanners to ensure that they can provide accurate diagnostic information. Calibration is crucial for ensuring the performance and quality of medical equipment, reducing the risk of diagnostic errors and improving the accuracy of patient treatment.

The basic steps of calibration

(1) Choose appropriate calibration instruments: Choose calibration instruments that meet national or regional standards, such as ultrasonic calibrators, frequency meters, etc.

(2) Preparation of calibration samples: Select calibration samples that match the characteristics of human tissue, such as acoustic water tanks, ultrasound probes, etc.

(3) Conduct calibration experiments: Follow the calibration specifications for experimental operations and record experimental data.

(4) Analyze experimental results: Analyze the experimental results to determine whether the performance of the ultrasonic scanner meets the standard requirements.

(5) Adjust calibration parameters: Make necessary adjustments based on experimental results to ensure the accuracy and reliability of the ultrasonic scanner.

Precautions for calibration

(1) During the calibration process, violent vibrations or impacts should be avoided to avoid affecting the experimental results.

(2) Ensure that the characteristics of the calibration sample are similar to those of human tissue to improve the accuracy of calibration.

(3) During the calibration process, attention should be paid to safety to avoid accidental injuries caused by improper operation.

3、 Maintenance techniques for medical ultrasound scanners

Daily maintenance

(1) Keep the equipment clean and dry: Regularly clean the surface and probe of the ultrasonic scanner to avoid the impact of dust and dirt on equipment performance.

(2) Check the power supply and cables: Ensure that the power supply and cables are properly connected to avoid equipment damage caused by power failure.

(3) Check probe connection: Regularly check whether the connection between the probe and the equipment is firm to avoid probe detachment or damage.

Preventive maintenance

(1) Regular performance testing: According to the recommendations of the equipment manufacturer, perform regular performance testing on the ultrasonic scanner to ensure its normal operation.

(2) Replace consumables: Replace consumables as needed, such as ultrasound coupling agents, filters, etc., to ensure the normal operation of the equipment.

(3) Preventive maintenance: According to the recommendations of the equipment manufacturer, regular preventive maintenance should be carried out, such as cleaning probes, lubricating mechanical components, etc., to extend the service life of the equipment.

Troubleshooting and Repair

(1) Fault diagnosis: When the equipment malfunctions, a fault diagnosis should be conducted first to determine the location and cause of the fault. Diagnosis can be made through methods such as asking, seeing, listening, smelling, and touching.

(2) Repair preparation: Based on the fault diagnosis results, prepare corresponding repair tools and spare parts. If replacement of spare parts is required, it is necessary to first confirm whether the model and specifications of the spare parts are correct.

(3) Repair operation: Follow the repair instructions provided by the equipment manufacturer for repair operations. During the maintenance process, attention should be paid to safety to avoid accidental injuries caused by improper operation. After the repair is completed, testing should be conducted to ensure that the equipment performance returns to normal.

4、 Summary and suggestions

The calibration and maintenance of medical ultrasound scanners are crucial to ensure their accuracy and reliability. Regular calibration and maintenance can reduce the risk of diagnostic errors and improve the accuracy of patient treatment. Therefore, medical staff should fully understand and master the calibration and maintenance skills of medical ultrasound scanners to ensure their safe and effective application in clinical practice. It is also recommended that medical institutions establish dedicated maintenance teams or cooperate with professional medical equipment service providers to ensure the normal operation and timely maintenance of the equipment.