First of all, you must have a medical practitioner qualification certificate, and you must also take the operation test and written test. This year's written test is next weekend;

Then, after passing the exam, you must register in your hospital, that is, the practicing certificate of a practicing doctor;

In addition, if you are in a teaching hospital, you will be required to take the teacher qualification certificate;

But as far as I know, some clinical departments have their own B-ultrasound examination, such as gastroenterology, which is usually performed by nurses. In this case, most of them just learned B-ultrasound and didn't get any certificates.