Featured Research

from universities, journals, and other organizations

3-D MRI Technique Helps Radiologists Detect High-risk Carotid Disease

Date:
September 17, 2008
Source:
Radiological Society of North America
Summary:
Canadian researchers have used 3-D magnetic resonance imaging to accurately detect bleeding within the walls of diseased carotid arteries, a condition that may lead to a stroke. The results of the study suggest the technique may prove to be a useful screening tool for patients at high risk for stroke.

Canadian researchers have used three-dimensional magnetic resonance imaging (3-D MRI) to accurately detect bleeding within the walls of diseased carotid arteries, a condition that may lead to a stroke. The results of the study published in the October issue of Radiology suggest the technique may prove to be a useful screening tool for patients at high risk for stroke.

Related Articles


When major arteries are affected by atherosclerosis, fatty deposits, or plaques, accumulate on the inner lining of the vessel walls. Progression of the disease over time leads to narrowing, restricting blood flow or becoming completely blocked.

Until recently, scientists believed that this narrowing, called stenosis, was responsible for most heart attacks or strokes. But new studies have identified the composition of complicated plaques as being a major cause of vascular events and deaths. These complicated plaques are characterized by surface ulcerations, blood clots and bleeding into the vessel wall.

"There's been a major sea change in our research," said Alan R. Moody, F.R.C.R., F.R.C.P., of the University of Toronto. "We now know that the composition of carotid artery plaque is likely to be more predictive of future stroke events than the amount of stenosis in the vessel."

In the study, conducted at the Sunnybrook Health Sciences Centre in Toronto, researchers performed 3-D MRI on the carotid arteries of 11 patients, age 69 to 81. Complicated plaques were then surgically removed from the patients' diseased arteries and analyzed under a microscope.

The research team found strong agreement between the lesions identified by MRI as complicated plaques and the microscopic analysis of the tissue samples.

"With high spatial resolution 3-D MRI, we are able to noninvasively analyze the tissue within the artery wall and identify small bleeds within rupture-prone plaques that may put patients at risk for future stroke," Dr. Moody said.

According to Dr. Moody, 3-D MRI is a tool that is ideally suited to screen high-risk patients for complicated carotid plaques and to monitor the effects of interventions designed to slow the progress of the atherosclerotic disease. The technique is easy to perform and interpret and takes only a few minutes when added to an MR angiography study, he said.


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.


Journal Reference:

  1. Bitar et al. In Vivo 3D High-Spatial-Resolution MR Imaging of Intraplaque Hemorrhage. Radiology, 2008; 249 (1): 259 DOI: 10.1148/radiol.2491071517

Cite This Page:

Radiological Society of North America. "3-D MRI Technique Helps Radiologists Detect High-risk Carotid Disease." ScienceDaily. ScienceDaily, 17 September 2008. <www.sciencedaily.com/releases/2008/09/080916100938.htm>.
Radiological Society of North America. (2008, September 17). 3-D MRI Technique Helps Radiologists Detect High-risk Carotid Disease. ScienceDaily. Retrieved January 25, 2015 from www.sciencedaily.com/releases/2008/09/080916100938.htm
Radiological Society of North America. "3-D MRI Technique Helps Radiologists Detect High-risk Carotid Disease." ScienceDaily. www.sciencedaily.com/releases/2008/09/080916100938.htm (accessed January 25, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Sunday, January 25, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Disneyland Measles Outbreak Spreads To 5 States

Disneyland Measles Outbreak Spreads To 5 States

Newsy (Jan. 24, 2015) Much of the Disneyland measles outbreak is being blamed on the anti-vaccination movement. The CDC encourages just about everyone get immunized. Video provided by Newsy
Powered by NewsLook.com
Growing Measles Outbreak Worries Calif. Parents

Growing Measles Outbreak Worries Calif. Parents

AP (Jan. 23, 2015) Public health officials are rushing to contain a measles outbreak that has sickened 70 people across 6 states and Mexico. The AP&apos;s Raquel Maria Dillon has more. (Jan. 23) Video provided by AP
Powered by NewsLook.com
Smart Wristband to Shock Away Bad Habits

Smart Wristband to Shock Away Bad Habits

Reuters - Innovations Video Online (Jan. 23, 2015) A Boston start-up is developing a wristband they say will help users break bad habits by jolting them with an electric shock. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
This Is What It's Like To Date A Med Student

This Is What It's Like To Date A Med Student

BuzzFeed (Jan. 23, 2015) Dating is now speed-dating... or studying. Video provided by BuzzFeed
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