Translation of "Rays" in Chinese

Do I need X-rays?

我需要照X光片吗？

Ultraviolet rays can cause skin cancer.

紫外線可導致皮膚癌。

Dentists take x-rays to examine your teeth.

牙医用X光检查你的牙齿。

The doctor used X-rays to examine my stomach.

醫生用X光檢查我的胃。