Navigation Links
How do you improve mammogram accuracy? Add noise
Date:12/22/2009

Members of a Syracuse University research team have shown that an obscure phenomenon called stochastic resonance (SR) can improve the clarity of signals in systems such as radar, sonar and even radiography, used in medical clinics to detect signs of breast cancer. It does this by adding carefully selected noise to the system.

The result has been a distinct improvement in the system's ability to correctly identify precancerous lesions, plus a 36 percent reduction in false positives. The inventors have developed a novel method of calculating precisely the correct type and level of noise to add to existing noise in radiography or a similar system.

"We see a broad spectrum of applications for this technology," says research assistant professor Hao Chen. "If a system's performance is unsatisfactory, we add noise to the system based on a specific algorithm that can significantly improve system performance."

A patent covering the technology has been issued to Chen, Distinguished Professor Pramod K. Varshney and research professor James Michels. All are associated with SU's L.C. Smith College of Engineering and Computer Science.

In mammography studies carried out by doctoral candidate Renbin Peng, the challenge was to identify clusters of micro-calcifications in breast tissue. These early signs of precancerous conditions average only 0.3 mm in size and offer only subtle contrast with surrounding tissue. In addition to improving detection of these lesions, the group has reduced false positives by more than a third.

While the current focus of the research group is on medical uses of stochastic resonance, other applications are expected in enhancing audio, video, geophysical, environmental, radar and other signals. The group has been receiving support from the U.S. Air Force Office of Scientific Research. Ongoing investigations by the Syracuse group are expected to produce further improvements in the efficiency and robustness of the SR-based detection techniques.

A paper by the inventors on theory of stochastic resonance stochastic resonance effect in signal detection was published by IEEE Transactions in Signal Processing in July 2007 and became one of the top 10 downloads of that month. Another paper, covering the mammography studies, co-authored by Peng was published in IEEE Journal of Selected Topics in Signal Processing in February 2009.


'/>"/>

Contact: Sara Miller
semortim@syr.edu
315-443-9038
Syracuse University
Source:Eurekalert

Related medicine news :

1. Vision restoration therapy shown to improve brain activity in brain injured patients
2. Broad-based group of physicians calls for improvement in stroke treatment
3. Frequent Prostate Screens Fail to Improve Aggressive Cancer Diagnoses
4. Pill box organizers increase HIV patients adherence and improve viral suppression
5. Treating depression may improve recovery of heart rate variability following coronary syndromes
6. Study Demonstrates Marteks Algal DHA Oil Improves Blood Triglyceride Lipid Levels
7. AWWA, National Association of Water and Sanitation of Mexico, Agree to Share Expertise and Resources for Improved Water Supply
8. Exercise and yoga improves quality of life in women with early-stage breast cancer
9. QI projects may -- or may not -- improve patient safety and outcomes
10. National Association for Sport and Physical Education Partners with S&S Worldwide to Help Improve Childrens Fitness
11. MedQuist Re-launches New, Improved Web Site
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... June 25, 2016 , ... Austin residents seeking Mohs surgery services, can now ... and to Dr. Russell Peckham for medical and surgical dermatology. , Dr. Dorsey brings ... The selective fellowship in Mohs Micrographic Surgery completed by Dr. Dorsey was under the ...
(Date:6/25/2016)... ... 2016 , ... First Choice Emergency Room , the largest network of ... Medical Director of its new Mesquite-Samuell Farm facility. , “We are pleased to ... said Dr. James M. Muzzarelli, Executive Medical Director of First Choice Emergency Room. ...
(Date:6/25/2016)... ... 25, 2016 , ... On Friday, June 10, Van Mitchell, Secretary of the ... to iHire in recognition of their exemplary accomplishments in worksite health promotion. , The ... Health & Wellness Symposium at the BWI Marriott in Linthicum Heights. iHire was one ...
(Date:6/24/2016)... ... June 24, 2016 , ... Those who have experienced traumatic events may ... to unhealthy avenues, such as drug or alcohol abuse, as a coping mechanism. To ... for healthy coping following a traumatic event. , Trauma sufferers tend to feel a ...
(Date:6/24/2016)... ... June 24, 2016 , ... The Pulmonary Hypertension ... that it will receive two significant new grants to support its work to ... its 25th anniversary by recognizing patients, medical professionals and scientists for their work ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... 26, 2016 One of Australia,s ... formation of a new biotechnology company, Noxopharm Limited [ABN 50 608 ... IPO and to list on the ASX. Noxopharm is ... to enter a Phase 1 clinical study later this year. ... one of the biggest problems facing cancer patients - the ability ...
(Date:6/26/2016)... 2016 Jazz Pharmaceuticals plc (Nasdaq: ... Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended ("HSR"), ... Inc. ("Celator"; Nasdaq: CPXX ) expired effective ... As previously announced on May 31, 2016, ... agreement under which Jazz Pharmaceuticals has commenced a tender ...
(Date:6/26/2016)... June 27, 2016  VMS Rehab Systems, Inc. ( ... take whatever measures required to build a strong and ... is currently listed on the OTC Markets-pink current trading ... and CEO, "We are seeing an anomaly in market ... not only by the Company, but shareholders and market ...
Breaking Medicine Technology: