background: there are many diseases that involve the gastrointestinal tract treatment depends upon...
Post on 20-Dec-2015
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TRANSCRIPT
Background:• There are many diseases that
involve the gastrointestinal tract
• Treatment depends upon specific diagnosis
• This involves identifying both the nature of the disease and its precise location within the GI tract
Examples of common diseases
• Ulcers
• Cancers
• Inflammation (colitis, ileitis,gastritis)
• Arteriovenous malformations
• Infections
Problem:
How to visualize the gastrointestinal tract in order to diagnose and treat?
ANATOMIC DISTRIBUTIONGastrointestinal Tract
Stomach
Small bowel
Rectum
Colon
EsophagusEsophagus
Endoscopic view of gastric ulcerEndoscopic view of gastric ulcer
• We were still left with about 20 feet of small bowel that could not be reached by endoscopes from above and below
Antenna
ASIC transmitter
Batteries
CMOS imager Lens
Illuminating LEDs
Schematic diagram of M2A capsule
Normal
Arteriovenous malformation
Arteriovenous malformation with active bleeding
NSAID ulceration
Ischemic ulceration
Carcinoid tumor