Featured Research

from universities, journals, and other organizations

Cincinnati Researchers Use Doppler Ultrasound To Spot Early Signs Of Blocked Arteries

Date:
November 4, 1999
Source:
University Of Cincinnati
Summary:
Researchers from the University of Cincinnati have developed a safer, non-invasive method to spot early signs of artery blockages.

Cincinnati -- Researchers from the University of Cincinnati have developed a safer, non-invasive method to spot early signs of artery blockages.

Related Articles


The method, which relies on Doppler ultrasound, was described in a presentation by physics graduate student Megan Miller Nov. 2 during the annual meeting of the Acoustical Society of America in Columbus. Miller worked with UC faculty members Christy Holland in the department of radiology in the College of Medicine and Peter Disimile in the department of aerospace engineering and engineering mechanics.

The researchers used an experimental model made of transparent polyurethane tubing to simulate various shapes and sizes of blockages in arteries. Fluid was pumped through the tubing to simulate typical blood flow. Doppler ultrasound was used to track the amount of turbulence in the "blood" flow just past the blockage.

Turbulence results from fluid instabilities generated as blood flows past a blockage or "stenosis" in the arteries. The most intense turbulence results from the most severe blockages. Miller, Holland and Disimile used a second technique, laser Doppler anemometry, to verify the results from the Doppler ultrasound.

Those results indicate that the ultrasound technique can accurately predict the turbulence intensity. Quantitative measurements of the pressure drop across a series of stenoses indicate that the ultrasound technique can also detect early signs of atherosclerosis.

Ultrasound would also be safer than current methods which require either exposure to ionizing radiation (angiography) or the insertion of a pressure transducer within the artery itself.

"Doppler ultrasound offers quantitative, noninvasive clinical information," said Holland. "Peak turbulence intensity is a promising indicator of the severity of the stenosis and could aid in early detection of atherosclerosis."

The research has been supported by the Whitaker Foundation and a UC seed grant program in radiology. Holland and Disimile first began collaborating under UC's Biomedical Seed Grant Program which linked researchers in the College of Medicine with researchers in the College of Engineering.

Systemic hypertension is the most prevalent cardiovascular disorder in the United States, affecting over 50 million people. Hypertension leads to atherosclerosis and other forms of vascular disease by damaging blood vessel endothelium. Atherosclerosis -- characterized by the deposition of cholesterol, lipids and cellular debris in the lining of artery walls -- is responsible for the majority of cases of myocardial and cerebral infarction and is a principal cause of death in the U.S. and western Europe.


Story Source:

The above story is based on materials provided by University Of Cincinnati. Note: Materials may be edited for content and length.


Cite This Page:

University Of Cincinnati. "Cincinnati Researchers Use Doppler Ultrasound To Spot Early Signs Of Blocked Arteries." ScienceDaily. ScienceDaily, 4 November 1999. <www.sciencedaily.com/releases/1999/11/991104070713.htm>.
University Of Cincinnati. (1999, November 4). Cincinnati Researchers Use Doppler Ultrasound To Spot Early Signs Of Blocked Arteries. ScienceDaily. Retrieved March 31, 2015 from www.sciencedaily.com/releases/1999/11/991104070713.htm
University Of Cincinnati. "Cincinnati Researchers Use Doppler Ultrasound To Spot Early Signs Of Blocked Arteries." ScienceDaily. www.sciencedaily.com/releases/1999/11/991104070713.htm (accessed March 31, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Tuesday, March 31, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Soda, Salt and Sugar: The Next Generation of Taxes

Soda, Salt and Sugar: The Next Generation of Taxes

Washington Post (Mar. 30, 2015) — Denisa Livingston, a health advocate for the Dinι Community Advocacy Alliance, and the Post&apos;s Abby Phillip discuss efforts around the country to make unhealthy food choices hurt your wallet as much as your waistline. Video provided by Washington Post
Powered by NewsLook.com
UnitedHealth Buys Catamaran

UnitedHealth Buys Catamaran

Reuters - Business Video Online (Mar. 30, 2015) — The $12.8 billion merger will combine the U.S.&apos; third and fourth largest pharmacy benefit managers. Analysts say smaller PBMs could also merge. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
S. Leone in New Anti-Ebola Lockdown

S. Leone in New Anti-Ebola Lockdown

AFP (Mar. 28, 2015) — Sierra Leone imposed a three-day nationwide lockdown Friday for the second time in six months in a bid to prevent a resurgence of the deadly Ebola virus. Duration: 01:17 Video provided by AFP
Powered by NewsLook.com
These Popular Antibiotics Can Cause Permanent Nerve Damage

These Popular Antibiotics Can Cause Permanent Nerve Damage

Newsy (Mar. 27, 2015) — A popular class of antibiotic can leave patients in severe pain and even result in permanent nerve damage. Video provided by Newsy
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