ra·dio·lu·cent /ˌredioˈlusṇt/ 透射的倫琴射線
ra·dio·lu·cent /-ˈlusṇt/ 形容詞 射線通透的,射線可透過的
radiolucent adj : almost complete transparent to X-rays or other forms of radiation; "radiolucent tissues" [ant: radiopaque]