i am sorry to tell u that you r wrong, my dear i am a specialist in radiology and these info not fresh for me.i know about the requirments since a long time coz it is my speciality and that's why i did speciality radiology when i applied to Quebec first time,
if u read chart,u will see that you have 2 choices to apply exams either u have ARDMS certificate or u have diploma/certificate in sonography(that's why i spook about programs in institutes which accredit by CMA),on other words to be eligibile for applying exams in sonography in canada there r 2 ways:
candidates should obtain
*Theoretical and clinical education in Diagnostic Medical Sonography (DMS, it means registered sonographer in ur country or graduates of a CMA Accredited Sonography program and these programs r available in institutes which i mentioned it before )
OR **Other national certification certificate which include ARDMS( here you have to know that to be eligible take exams ARDMS,u should have an expierence in sonography minumum 12 expierence paid plus general medical degree please check this also. By the way i applied for ARDMS,then passed their exams in Istanbul coz they have centers abroad,u can see also example of forms CV and Letters which u should send them with application plus fees also to process ur file for examenations.
Now since many doctors may be r not radiologist in this forum,so they have one option which pass course in sonography program in one from these institutes paid sure in order to be eligible apply and register in exams of sonography in canada OR is someone has an expierence in sonography 12 months ,so he/she can apply to ARDMS at first to take exams,then later u can apply for sonography canada.Please check on Generalist and Cardiac Algorithm
-secondly of course you can pass the exams of sonography canada just inside canada,but my dear we r talking about your futures,coz they will process ur file of immigration sooner or later,u should know from now what will u do there and set up plan from now my dear,i did that when i applied first time,don't be late otherwise u will be lost ,believe me,u have to prepare everything from now while waiting ur visa(search about these institutes,contact them,see requirements,deadline,sent ur request,their tutions).
Important Note,u r wrong about job,i have more than 6 friends there,they passed these courses in institutes which r acrredited as i said before,they did not apply for exams of canadasonography and they r not registered sonographer,but they r working now
in privet clinic,one from them works in privet clinic at Indian Radiologist ,and his salary is 45$ per hour,so my dear at least pass these courses and u will be lucky,u should know also that sonography now is very very demand profession in Canada and USA,hope i clarified everything,i am ready for any questions