X-ray

1

The doctor said I needed a X-ray.
The doctor said I needed an X-ray.

X-ray begins with a vowel sound (‘ex’), so use an, not a: ‘an X-ray’.

See AN

2

I hurt my arm, so I made an X-ray at the hospital.
I hurt my arm, so I had an X-ray at the hospital.

When you are the patient, say ‘have an X-ray’ or ‘get an X-ray’. A radiographer can ‘take an X-ray’.