Dear Ankit!

To become an ultrasound technician, that is a sonographer, you can go for degree or diploma courses right after class 12th.

For BSc degrees like

B.Sc medical imaging technology

BSc. Medical Lab Technology

BSc. Radiography/Radiology

eligibility: must have passed with at least 50% in class 12th in PCB (Physics, Chemistry, biology) stream

Duration: BSc. lasts for three years.

Diploma courses :

-Ultrasound Diploma Course

- Diploma in Radiography

Duration: Diploma courses last for 6 months.

eligibility: You need to have passed with minimum 50% marks in any stream.

Thus, while PCB stream in 12th is compulsory to pursue BSc, no such requirement is there for diploma courses.

You may follow this link for more information:

https://www.careers360.com/courses/articles/sonography-courses-after-12th-counar