This is the 5116th most frequent Korean word.
내시경
Endoscopy.
In this context, '내시경' is used to indicate the medical procedure involving an endoscope.
내시경 촬영을 위해 금식을 해야 합니다.
You need to fast before undergoing an endoscopy.
Here, '내시경' refers to a medical instrument used for internal examinations.
의사는 내시경을 사용하여 위를 검사합니다.
The doctor uses an endoscope to examine the stomach.
Here, '내시경' represents the field or technology of endoscopy in a general sense.