l  The model is used to evaluate and manage the image accuracy and probe deterioration of ultrasonic diagnostic equipment

| L the use of materials with strong durability, even if the perennial use, quality will not be degraded

| In the ultrasound module, biopsy objects were placed in different positions, and the measurement of different resolutions caused by different depths was trained accordingly

| L can be measured at different resolutions in two modules with different attenuation rates and different sound waves