Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

The Hyperspectral Imaging Endoscope: A New Tool For Non-Invasisve In Vivo Cancer Detection

10.08.2004


A newly designed endoscope, capable of providing sub-second polarized spectral images of tissue in vivo (in the body), allows physicians and surgeons to non-invasively survey and sample an entire area without actually removing tissue, and may offer hope as a new tool for detecting cancer early. Researchers from Cedars-Sinai Medical Center in Los Angeles and Carnegie Mellon University in Pittsburgh describe the instrument’s capabilities and clinical applications in the July 2004 issue of Progress in Biomedical Optics and Imaging.

The new device, named the Hyperspectral Imaging Endoscope (HSIE), is a standard medical endoscope enhanced with a customized imaging fiber. Working together with a camera, a laptop computer and a tunable light source covering the visible and near-infrared range, the HSIE system is capable of acquiring rapid spectral images of tissues, allowing physicians to non-invasively survey and sample an entire area of tissue in vivo (within the body). Compared to traditional biopsy where a small amount of tissue is removed and then examined in a laboratory, the HSIE system provides a non-contact method of gaining as much information as possible about an area without removing any tissue.

The system is relatively simple and based on the intrinsic properties of tissue and light, explains Daniel Farkas, Ph.D., Director of the Minimally Invasive Surgical Technologies Institute at Cedars-Sinai, and one of the study authors. “When light impacts tissue, it gives back a certain scattering pattern with spectral oscillations depending on the size of the scattering object. This pattern gives us a relatively quantitative idea whether or not a tissue area contains cancerous cells since the nuclei of cells in pre-cancerous and cancerous tissues are enlarged. The theory and spectroscopy have been beautifully worked out by our colleagues in Boston and Los Alamos, and we have now moved this type of investigation into the endoscopic imaging domain.”



The pilot study using the HSIE system involved examining epithelial tissue derived from lung cancer specimens. Currently the number one cause of cancer death worldwide, lung cancer is difficult to detect in its early stages and often isn’t found until after it has spread.

At the University of Pittsburgh Medical Center and Allegheny General Hospital, the two clinical sites where the first version of the HSIE instrument was tested, data were gathered from patients who had been treated previously for lung cancer and were to undergo an endoscopic examination to see if the cancer had returned. The area to be biopsied in the traditional way by the surgeon was first scanned using the HSIE, and then sent to the laboratory. The result of the pathological examination was then treated as “ground truth.” According to Dr. Farkas, there was a good correlation between the HSIE imaging and the pathologists’ diagnoses.

Based on the experience of physicians participating in the pilot study, Dr. Farkas anticipates that the medical community will embrace the new endoscope in its practices. “Physicians can use their own endoscope of choice exactly as they have before. By using this additional fiber, they’ll be able to have either two kinds of images on separate screens or overlay the spectrally classified image onto the regular image. In early acceptance stages, this could only guide biopsy, but as the matches with pathology are confirmed, the true diagnostic value of HSIE could be established.”

Dr. Farkas, a biophysicist and past Fulbright scholar, is the vice chair for research of Cedars-Sinai’s Department of Surgery as well as director of the Minimally Invasive Surgical Technologies Institute, which was formed in May 2002 to pursue the development and application of advanced technologies in surgery.

While epithelial tissue is the primary application, Dr. Farkas said the HSIE system can also be used for gastrointestinal investigations and maybe even for breast duct endoscopy.

“Surgery is clearly gravitating to the minimally invasive arena. The technology we employed in building the HSIE system gives us a great opportunity to improve a number of important components of surgical intervention. We are working now on an implementation using acousto-optic tunable filters, invented for hyperspectral satellite reconnaissance. It may sound like science fiction now, but I think we may ultimately be able to use the endoscope to not only detect cancers early, but to treat them using modalities such as localized photodynamic therapy, laser ablation or gene therapy. This closer coupling, spatially and temporally, between diagnosis and treatment may be the cornerstone of future surgical intervention.”

The study was funded by the National Institutes of Health (NCI Unconventional Innovation Program, N01-CO-07119), the National Science Foundation (Major Instrumentation Grant BESOO 79483) and the Pennsylvania Department of Health (Commonwealth Universal Research Enhancement program, Tobacco Settlement Act 77-2001).

Sandra Van | Cedars-Sinai Media
Further information:
http://www.csmc.edu

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: Salmonella as a tumour medication

HZI researchers developed a bacterial strain that can be used in cancer therapy

Salmonellae are dangerous pathogens that enter the body via contaminated food and can cause severe infections. But these bacteria are also known to target...

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...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

3rd Symposium on Driving Simulation

23.10.2017 | 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

 
Latest News

Microfluidics probe 'cholesterol' of the oil industry

23.10.2017 | Life Sciences

Gamma rays will reach beyond the limits of light

23.10.2017 | Physics and Astronomy

The end of pneumonia? New vaccine offers hope

23.10.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>