Questions about biomedical engineering and imaging technician and titles

I, like you, can not take the technician, I signed up last year, the audit did not pass, said the specialty does not meet. But I signed up for the National Large Medical Equipment Examination can be examined, this is divided into CT, MR, NMI, etc., but the technician's is not divided. Because I can't take the test, I'm going to change careers, otherwise there's really no way out, not even as good as a specialist graduate. However, I also heard that you enroll a few more times, maybe one year the audit is not strict on the test.