Thursday, April 14, 2016

Endoscopy vs laparoscopy

The instrument used for upper GI endoscopy is a flexible endoscope. It uses the principles of fiber optics to shine light into the body. It has a tiny camera attched at its end which records the images and transmits them onto a screen so that both the doctor and the patient can see.
Laparoscopy uses a scope to look into the abdominal cavity. The scope may be rigid or flexible, rigid scopes being more commonly used. It uses the principles of Hopkins rod lens system to transmit images to the monitor.This was devised by Harold Hopkins, a physicist who used glass rods to fill the air spaces spaces between lenses and greatly improved the quality of images.
Some regions of the body like gastrointestinal tract will always require flexibe endoscopes while the rod-lens endoscopes produce such high clarity images that they are the instruments of choice in laparoscopic surgeries.

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