Hello aspirant

You can not give anaesthesia in operation theatre  even after completing PhD in anaesthesia technology.

A phD in anaesthesia technology is a research degree that prepares the candidate to conduct in the field of anaesthesia.

If you want to administer anaesthesia you must specialise in anaestheology.

There are various anaesthesia training and education program which qualify you to administer anaesthesia.

CAA - It is Certified anaestheologist assistant . Master's degree in anaestheology assistant studies , MAAS and then training of 12 to 24 months is required.

Anaestheologist - Having MD or DO degree along with residency training in anaestheology for 3 to 5 years.

Anaesthesia technologist - Associate degree or certificate in anaestheology technology.

For more information kindly visit the link given below

https://www.careers360.com/courses/anaesthesiology-course