Then you can go to work after professional training in ultrasound. As for the length of training, it depends on the doctor's mastery of knowledge, education during training, work experience and so on. For example, for abdominal ultrasound examination, you must receive professional training for at least half a year before you can initially start working in the ultrasound industry.
Do color ultrasound examination, relatively speaking, the country has clear requirements, requiring a color ultrasound certificate, and the qualification to participate in the color ultrasound certificate examination is to engage in ultrasound professional work for more than two years. Only after passing the examination certificate can we engage in color Doppler ultrasound examination.