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Pill-sized device provides rapid, detailed imaging of esophageal lining
Date:1/13/2013

a minute, and a procedure involving four passes two down the esophagus and two up could be completed in around six minutes. A typical endoscopic examination requires that the patient stay in the endoscopy unit for approximately 90 minutes. The detailed microscopic images produced by the OFDI system revealed subsurface structures not easily seen with endoscopy and clearly distinguished the cellular changes that signify Barrett's esophagus. Study participants who had previously undergone endoscopy indicated they preferred the new procedure.

"The images produced have been some of the best we have seen of the esophagus," says Tearney, a professor of Pathology at Harvard Medical School and an MGH Research Scholar. "We originally were concerned that we might miss a lot of data because of the small size of the capsule; but we were surprised to find that, once the pill has been swallowed, it is firmly 'grasped' by the esophagus, allowing complete microscopic imaging of the entire wall. Other methods we have tried can compress the esophageal lining, making it difficult to obtain accurate, three-dimensional pictures. The capsule device provides additional key diagnostic information by making it possible to see the surface structure in greater detail"

Current recommendations for diagnosis of Barrett's esophagus, which is uncommon in women, call for endoscopic screening of men with chronic, frequent heartburn and other symptoms of gastroesophageal reflux disease. Study co-author Norman Nishioka, MD, Wellman Center and MGH Gastroenterology, notes, "An inexpensive, low-risk device could be used to screen larger groups of patients, with the hope that close surveillance of patients found to have Barrett's could allow us to prevent esophageal cancer or to discover it at an earlier, potentially curable stage. But we need more studies to see if that hope would be fulfilled."


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Contact: Sue McGreevey
smcgreevey@partners.org
617-724-2764
Massachusetts General Hospital
Source:Eurekalert  

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