医い療りょう輸ゆ送そう機き

• 救きゅう急きゅう車しゃ

  Ambulance (ground vehicle), while 医療輸送機 is specifically an aircraft.

• ドクターヘリ

  Doctor helicopter, a smaller helicopter for emergency medical services, often used for rapid on-site response.

Compound of 医療 (medical care) + 輸送 (transport) + 機 (aircraft).