Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New screening technologies improve detection of polyps during colonoscopy

07.10.2008
Two studies presented at the American College of Gastroenterology's 73rd Annual Scientific Meeting in Orlando highlight new technologies with the potential to improve the detection of colorectal polyps and flat lesions during colonoscopy.

The American College of Gastroenterology endorses colonoscopy as the preferred strategy for colorectal cancer screening because of its remarkable sensitivity in detecting and removing polyps before they become cancerous.

In a prospective study of 214 patients conducted at eight medical institutions in the United States, Dr. Douglas K. Rex of Indiana University Medical Center in Indianapolis, Dr. Jerome D. Waye of Mount Sinai Hospital in New York, and their research team evaluated the effectiveness of a new imaging device (Third Eye Retroscope ™) that provides a 180-degree retrograde view of the colon, while complementing the forward view of the standard colonoscope.

Retroscope Device Boosts Polyp Detection in the Colon

Researchers found that the retroscope, when combined with the standard colonoscope, significantly increased the detection of adenomas and other polyps. Investigators identified 203 polyps and 105 adenomas, which were removed with the standard colonoscope. The retroscope detected 13.3 percent additional polyps and 12.4 percent additional adenomas. All polyps were removed by standard colonoscope.

According to lead investigator Dr. Rex, "This new device has the potential to improve dramatically the detection of neoplasia during colonoscopy. Additional technical improvements are expected, which will make the device more effective and efficient."

Study Finds Narrow Band Imaging Improves Detection of Flat Lesions in the Colon

In a separate analysis conducted at Valduce Hospital in Como, Italy, Dr. Franco Radaelli and his colleagues evaluated whether the use of narrow band imaging (NBI) versus white light during the withdrawal phase of colonoscopy could enhance the detection of flat or depressed colorectal lesions.

Two hundred fifteen patients, ages 50 to 69, who had a positive fecal occult blood test, underwent screening colonoscopy. The patients were randomized to a white light (107 patients) or narrow band imaging (108 patients) during the retraction phase – or withdrawal of the scope – of colonoscopy.

Researchers found narrow band imaging significantly improved the detection of flat or depressed lesions, but did not increase the adenoma detection rate. Twelve percent of patients with at least one flat or depressed lesion were detected by white light, compared to 23 percent using narrow band imaging.

"Narrow band imaging technique seems to increase the sensitivity of the exam in detecting non-polypoid lesions and deserves further evaluation," says Dr. Radaelli.

Rosanne Riesenman | EurekAlert!
Further information:
http://www.acg.gi.org

More articles from Studies and Analyses:

nachricht Win-win strategies for climate and food security
02.10.2017 | International Institute for Applied Systems Analysis (IIASA)

nachricht The personality factor: How to foster the sharing of research data
06.09.2017 | ZBW – Leibniz-Informationszentrum Wirtschaft

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Terahertz spectroscopy goes nano

20.10.2017 | Information Technology

Strange but true: Turning a material upside down can sometimes make it softer

20.10.2017 | Materials Sciences

NRL clarifies valley polarization for electronic and optoelectronic technologies

20.10.2017 | Interdisciplinary Research

VideoLinks
B2B-VideoLinks
More VideoLinks >>>