Featured Research

from universities, journals, and other organizations

Optical Imaging Added To Ultrasound Improves Breast Cancer Diagnosis

Date:
September 28, 2005
Source:
Radiological Society of North America
Summary:
A new study shows that combining a technology called optical tomography with standard ultrasound imaging can help distinguish early-stage breast cancer from non-cancerous lesions -- and potentially reduce the number of breast biopsies performed.

OAK BROOK, Ill.-- A new study shows that combining a technology calledoptical tomography with standard ultrasound imaging can helpdistinguish early-stage breast cancer from non-cancerous lesions--andpotentially reduce the number of breast biopsies performed. The studyappears in the October issue of the journal Radiology.

Ultrasound, which uses reflected sound waves to produce images ofthe internal structures of the body, is often used to further evaluatesuspicious breast lesions found by mammography. But its results are notalways reliable enough to avoid a biopsy, in which some of the breasttissue is surgically removed and examined.

"Only 10 to 15 percent of women who undergo a breast biopsy actuallyhave a malignant tumor, leading many women to experience unnecessaryanxiety, discomfort and expense," said the study's lead author, QuingZhu, Ph.D., associate professor of electrical and computer engineeringat the University of Connecticut in Storrs.

By combining ultrasound with optical tomography, which employs diffusedlight in the near infrared (NIR) spectrum, the researchers were able tocalculate the concentration of oxygen-carrying blood cells--orhemoglobin--and microvessels present in each lesion. A high density ofmicrovessels in a tumor is known to be highly correlated withmalignancy.

"We found that early-stage invasive cancers have a two-fold highertotal hemoglobin concentration compared with benign lesions," Dr. Zhusaid. "These findings demonstrate that this technique has greatpotential for non-invasively distinguishing malignant and benign massesto reduce benign biopsies."

In the study, 65 patients with a total of 81 breast lesions wereexamined with ultrasound and optical tomography. Breast lesions werethen biopsied. The biopsy results confirmed eight invasive cancers and73 benign lesions. The average total hemoglobin concentration withinthe malignant group was more than twice that of benign group.

To perform the dual imaging exam, engineers in Dr. Zhu's lab added NIRsensors to an ultrasound transducer, creating a hand-held probe capableof acquiring both ultrasound images and light waves. The collectedimages and optical data were then processed using a computer algorithm.

"The combination of the two technologies is key," said Dr. Zhu."Ultrasound locates the lesion, while optical tomography helpscalculate the blood volume in the lesion."



Story Source:

The above story is based on materials provided by Radiological Society of North America. Note: Materials may be edited for content and length.


Cite This Page:

Radiological Society of North America. "Optical Imaging Added To Ultrasound Improves Breast Cancer Diagnosis." ScienceDaily. ScienceDaily, 28 September 2005. <www.sciencedaily.com/releases/2005/09/050928085420.htm>.
Radiological Society of North America. (2005, September 28). Optical Imaging Added To Ultrasound Improves Breast Cancer Diagnosis. ScienceDaily. Retrieved October 22, 2014 from www.sciencedaily.com/releases/2005/09/050928085420.htm
Radiological Society of North America. "Optical Imaging Added To Ultrasound Improves Breast Cancer Diagnosis." ScienceDaily. www.sciencedaily.com/releases/2005/09/050928085420.htm (accessed October 22, 2014).

Share This



More Health & Medicine News

Wednesday, October 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Orthodontist Mom Jennifer Salzer on the Best Time for Braces

Orthodontist Mom Jennifer Salzer on the Best Time for Braces

Working Mother (Oct. 22, 2014) Is your child ready? Video provided by Working Mother
Powered by NewsLook.com
U.S. Issues Ebola Travel Restrictions, Are Visa Bans Next?

U.S. Issues Ebola Travel Restrictions, Are Visa Bans Next?

Newsy (Oct. 22, 2014) Now that the U.S. is restricting travel from West Africa, some are dropping questions about a travel ban and instead asking about visa bans. Video provided by Newsy
Powered by NewsLook.com
US to Track Everyone Coming from Ebola Nations

US to Track Everyone Coming from Ebola Nations

AP (Oct. 22, 2014) Stepping up their vigilance against Ebola, federal authorities said Wednesday that everyone traveling into the US from Ebola-stricken nations will be monitored for symptoms for 21 days. (Oct. 22) Video provided by AP
Powered by NewsLook.com
Doctors Help Paralysed Man Walk Again, Patient in Disbelief

Doctors Help Paralysed Man Walk Again, Patient in Disbelief

AFP (Oct. 22, 2014) Polish doctors describe how they helped a paralysed man walk again, with the patient in disbelief at the return of sensation to his legs. Duration: 1:04 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins