The inspection of medical ultrasound instruments and related equipment (active) is a complex and meticulous process involving multiple considerations. The following is a detailed summary of its inspection methods:

1. Inspection preparation
Before the inspection, it is necessary to ensure that the medical ultrasound instruments and related equipment are in good working condition and prepare relevant inspection instruments and tools, such as ultrasound calibrators, resolution test objects, measuring tools, etc. At the same time, perform basic functional inspections on the equipment to ensure that it is inspected in good condition.

2. Inspection items and methods
Instrument appearance inspection
Check whether the appearance of the instrument is neat and intact, without obvious scratches or damage.
Check whether the buttons, display screens, connection interfaces, etc. of each part are intact and whether the functions are normal.
Power supply and electrical system inspection
Check whether the power cord of the instrument is intact, whether there are loose or damaged wires, etc.
Charge the battery or replace it with a new battery to ensure normal battery performance.
Ultrasound probe inspection
Check whether the probe surface is damaged, cracked, or otherwise defective.
Check whether the probe connection line is in good condition, without damage or looseness.
Perform a probe power-on test to observe the quality of the ultrasound image.
Control system detection
Test the control system of the instrument, including whether the functions of input devices such as buttons and knobs are normal.
Check whether the indications on the display are accurate and there are no abnormal displays.
Ultrasound image quality detection
Use test tools or simulators to test the quality of ultrasound images, including testing of parameters such as resolution, grayscale, and signal-to-noise ratio.
Evaluate the clarity, contrast, uniformity, etc. of the image.
Measurement accuracy detection
Use test tools to perform simulated measurements to detect the measurement accuracy of the ultrasound instrument in different modes, including distance measurement, area measurement, etc.
Ensure that the measurement results are accurate and reliable and meet industry standards.
Frequency response detection
Test the device's response ability at different frequencies to ensure its accuracy in different applications.
Axial and lateral resolution detection
Evaluate the device's ability to resolve details in imaging to ensure that it can clearly display fine structures.
Penetration depth detection
Measure the maximum penetration depth of ultrasound in human tissue to ensure the effectiveness of the device in in vivo imaging.
Power output detection
Measure the acoustic power output of the device to ensure that it operates within the safety standard range.
3. Classification of detection methods
Visual inspection method
By carefully observing the appearance and connection status of the ultrasound instrument, determine whether the instrument is obviously damaged or abnormal.
Functional test method
By using the various functions of the ultrasound instrument, including buttons and knobs, to test, ensure whether the function is normal, whether there is response delay, bit error, etc.
Image test method
Use test tools or simulators to generate specific images, and observe the quality of ultrasound images through the display screen, including clarity, contrast, etc.
Standard detection method
According to the performance specifications and standards of the ultrasound instrument, use standard test tools for detection to ensure that the instrument meets the specified standard requirements.
4. Detection instruments and equipment
Ultrasonic calibrator: used for calibration of equipment frequency response and power output to ensure the stability of the equipment during operation.
Resolution test object: used to evaluate the axial and lateral resolution of the equipment to ensure image quality.
Measuring tools: such as vernier calipers, micrometers, etc., are used to measure the size and accuracy of the equipment.
5. Detection cycle and requirements
Medical ultrasound instruments and related equipment should be regularly tested for performance and safety, and the detection cycle is usually determined based on the frequency of use of the equipment and the manufacturer's recommendations.
The test should be performed by trained professionals and follow relevant standards and operating procedures.
The test results should be recorded in detail and archived for subsequent reference and review.
VI. Abnormal handling
If an abnormality is found during the test, it should be handled in a timely manner. You can try to restart the instrument or contact professional technical support personnel for troubleshooting.
In summary, the inspection of medical ultrasound instruments and related equipment (active) is a comprehensive process involving multiple aspects of inspection items and methods. Through comprehensive testing, it can be ensured that the performance and safety of the equipment meet industry standards, providing strong protection for medical work.