Yes If you register for ultrasound, then you can only do ultrasound. Regulation training generally refers to the standardized training of residents. Standardized training for residents originated from 1993. The Ministry of Health issued the Notice on Implementing the Trial Measures for Standardized Training of Clinical Residents. The standardized training of clinical residents is an important part of medical students' post-graduation education, mainly focusing on clinical practice, professional compulsory courses and public compulsory courses.