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laparoscopy
Laparoscopy () is an operation performed in the abdomen or pelvis through small incisions (usually 0.5–1.5 cm) with the aid of a camera. It can either be used to inspect and diagnose a condition or to perform surgery.
==Types==
There are two types of laparoscope: (1) a telescopic rod lens system, that is usually connected to a video camera (single chip or three chip), or (2) a digital laparoscope where a miniature digital video camera is placed at the end of the laparoscope, eliminating the rod lens system. The mechanism mentioned in the second type is mainly used to improve the image quality of flexible endoscopes replacing traditional fiberscopes. Nevertheless, laparoscopes are rigid endoscopes. The rigidness is required in clinical practice. The rod lens based laparoscopes are highly dominant in practice, due to their fine optical resolution (50 µm typically, dependant on the aperture size used in the objective lens), and the image quality can be better than the digital cameras if necessary. The second type is very rare in the laparoscope market and hospitals.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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