Navigation Links
Seeing your true colors: Standards for hyperspectral imaging
Date:7/1/2014

Today, doctors who really want to see if a wound is healing have to do a biopsy or some other invasive technique that, besides injuring an already injured patient, can really only offer information about a small area. But a technology called hyperspectral imaging offers doctors a noninvasive, painless way to discriminate between healthy and diseased tissue and reveal how well damaged tissue is healing over a wide area. The catch? A lack of calibration standards is impeding its use.

After a successful non-human trial, researchers at the National Institute of Standards and Technology (NIST) have started gathering data on how human skin looks under various wavelengths of light in order to develop these badly needed standards.*

Unlike consumer digital cameras and the human eye, which only see red, green and blue light, a relatively narrow portion of the electromagnetic spectrum, each pixel of a hyperspectral image captures information for hundreds of narrow spectral bandsfrom the ultraviolet to the infrared.

According to NIST researcher David Allen, being sensitive to so many wavelengths means hyperspectral imagers can see many different things that humans can't see, including the amount of oxygen in human tissues, an indicator of healing.

"The potential of the technology has been proven, but the problem is that researchers are simply lacking a way to assure consistent results between labs," says Allen. "Standards development has itself been hindered by a lack of human skin reflectance data, especially in the ultraviolet and short-wave infrared."

Catherine Cooksey, the project leader for the spectrophotometry program that establishes and maintains the national scale of reflectance, says that before we delve into what diseased tissue looks like hyperspectrally, we need to know what so-called "normal" tissue looks like. Furthermore, she says that they are looking to quantify the variability both within an individual and between individuals due to inherent biological differences. The initial NIST studies used 28 volunteer test subjects. The data collected included a photograph of the test area on the subject's forearm and three reflectance measurements of the test area.

"Skin reflectance varies due to skin pigmentation, tissue density, lipid content and blood volume changes," says Cooksey. "And few, if any, studies of skin reflectance have been done with an estimated measurement uncertainty that is traceable to NIST or any other national metrology institute. We need good data from a wide variety of sources, and for that we need the help of our colleagues in the community."

Once they collect enough data, the NIST researchers can feed it into NIST's Hyperspectral Image Projector, a device that creates hyperspectral scenes that have all the spectral signatures of the real thingin this case, tissue in various stages of repair. Medical imaging technicians can then use these "digital tissue phantoms" to test their imagers' ability to discern among and detect different tissue types and conditions.


'/>"/>

Contact: Mark Esser
mark.esser@nist.gov
301-975-8735
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Related medicine news :

1. Seeing fewer older people in the street may lead low-income adults to fast-track their lives
2. Seeing is believing: Biologists and physicists produce revealing images of cell organization, behavior
3. Seeing through HIVs disguises
4. Merrill DataSite Releases New Comments: Solar technology M&A financing seeing shift in strategy
5. Patricia O’Laughlin Psychotherapy of Los Angeles Now Seeing Adults, Teens and Young Children
6. Vein Specialties Seeing Younger Clientele with Venous Disorders
7. Transvaginal Mesh Lawsuit News: Federal Judge Overseeing Boston Scientific Vaginal Mesh Lawsuits Selects Bellwether Cases, Bernstein Liebhard LLP Reports
8. Certified Nurse Midwives of Women's Excellence in Midwifery Now Seeing Teens for Gynecological Care in Lake Orion and Clarkston, Michigan Locations
9. Pacific Prime Clients With AXA PPP Seeing Modest Premium Adjustment
10. Pacific Prime Clients with Allianz Seeing Modest Increase in Health Insurance Premiums
11. Vaginal Mesh Lawsuit News: Federal Judge Overseeing American Medical Systems Litigation Sets Order of First Bellwether Trials, Bernstein Liebhard LLP Reports
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Seeing your true colors: Standards for hyperspectral imaging
(Date:10/13/2017)... ... October 13, 2017 , ... As health professionals work to improve ... engagement.” The patient is doing more than filling out a survey; in many cases ... an increasing emphasis in health care and research on the importance of active engagement ...
(Date:10/13/2017)... ... October 13, 2017 , ... The International ... promote standards of excellence for the field of eating disorders, announces the opening ... 25, 2018 in Orlando, Florida at the Omni Resort at ChampionsGate. ...
(Date:10/13/2017)... QUEENS, N.Y (PRWEB) , ... October 13, 2017 , ... ... recently became a member of ElderCounsel, a national organization of elder law and special ... constantly changing laws and rules. It also provides a forum to network with elder ...
(Date:10/13/2017)... ... , ... The Visiting Nurse Association (VNA) of Somerset Hills is proud to ... unique items from across the nation, this holiday-themed event will raise funds and awareness ... VNA. The boutique will be open Saturday, November 4 (10:00 a.m. – 5:00 ...
(Date:10/13/2017)... (PRWEB) , ... October 13, 2017 , ... Yisrayl Hawkins, ... week that explains one of the most popular and least understood books in the ... cryptic and puzzling descriptions that have baffled scholars for centuries. Many have tossed it ...
Breaking Medicine News(10 mins):
(Date:10/10/2017)... , Oct. 10, 2017   West Pharmaceutical ... innovative solutions for injectable drug administration, today shared the ... ID Adapter for improving the intradermal administration of polio ... Skin Vaccination Summit in May 2017 by Dr. ... Polio Department, World Health Organization (WHO), and recently published ...
(Date:10/4/2017)... , Oct. 4, 2017 OBP ... self-contained, illuminating medical devices, today announced regulatory approval ... Surveillance Agency (or Agência Nacional de Vigilância Sanitária ... single-use, cordless surgical retractor with integrated LED light ... access, illumination and exposure of a tissue pocket ...
(Date:10/2/2017)... The Rebound mobile app is poised to become ... tide of prescription drug addiction. The app empowers users to ... stepping down their dosage in a safe, controlled manner while ... the first 100,000 people to sign up will enjoy 3 ... ...
Breaking Medicine Technology: