Can a nurse take a technician exam? (Ultrasound, ECG) What are the requirements?

Need to obtain a degree in the appropriate discipline, and engaged in related positions for one year, the examination of licensed medical practitioner certificate, and obtain an induction card. Technicians can take the test, as long as the hospital to show proof of engagement in the relevant industry can be, but now the ECG and ultrasound are trying to diagnostic direction closer, the role of the technician is getting smaller and smaller