I need the answer for these 2 questions:
1)How is X-ray produced and why can it be used to help us see the structure inside the body?
2)Describe the process of X-Ray computerised tomography. What information does this process provide that ordinary X-ray images do not?
Those are YOUR assignments.
Read your text.
Use a good search engine.
Read, read, read.
Write up your answers, and a physics tutor here will check them for you.