X-rays: electromagnetic radiation used in medical imaging and inspections (also called 'rentogen' in Japanese).
病院で骨折の確認のためにＸ線を撮った。
They took an X-ray at the hospital to check for a fracture.
空港の手荷物検査ではＸ線装置が使われる。
X-ray machines are used in airport baggage inspections.
Ｘ線写真を見て医師が説明してくれた。
The doctor explained things to me while looking at the X-ray image.