Featured Research

from universities, journals, and other organizations

Engineers Model Blood Flow

Date:
September 18, 2002
Source:
University Of California - Davis
Summary:
A computer simulation that shows how branches and bends in blood vessels disturb smooth-flowing blood and contribute to heart disease has been built by researchers at the University of California, Davis. Eventually, it could be possible to use such models to predict the risk of some types of heart disease.

A computer simulation that shows how branches and bends in blood vessels disturb smooth-flowing blood and contribute to heart disease has been built by researchers at the University of California, Davis. Eventually, it could be possible to use such models to predict the risk of some types of heart disease. Every minute at rest the heart pumps out about five liters, or more than a gallon, of blood. The swirls and eddies of that blood could help determine where fatty plaques build up, damaging blood vessels and eventually leading to heart disease.

Mechanical engineers Abdul Barakat and Harry Dwyer, mathematician Angela Cheer and postdoctoral researchers Nader Shahcheraghi and Thomas Rutaganira built the model by studying CAT scans of the aorta, the major vessel carrying blood from the heart.

The aorta rises out of the heart and then bends over in a candy-cane shape, taking blood to the abdomen and the legs. Three major arteries branch off the top of the bend, taking blood to the upper body, head and heart itself.

The model shows how disturbed flows form in places such as the inside wall of curves and around branch points. Disturbed flows could play a role in the early stages of atherosclerosis, when fatty plaques form on the blood vessel walls, Barakat said. Oscillating flows, where the blood swooshes back and forth, seem to cause the most damage, Barakat said. The computer models can predict where this effect is likely to happen under different conditions.

Aorta shape varies slightly between individuals and could be an inherited risk factor for heart disease, Barakat said.

Eventually, it could be possible to image a patient's aorta by CAT scan, put that image into a computer model and see how it performs under different conditions, allowing doctors to assess the risk of atherosclerotic disease due to disturbed flows, Barakat said.

Details of the model are published in the August issue of the Journal of Biomechanical Engineering.


Story Source:

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


Cite This Page:

University Of California - Davis. "Engineers Model Blood Flow." ScienceDaily. ScienceDaily, 18 September 2002. <www.sciencedaily.com/releases/2002/09/020918063002.htm>.
University Of California - Davis. (2002, September 18). Engineers Model Blood Flow. ScienceDaily. Retrieved September 30, 2014 from www.sciencedaily.com/releases/2002/09/020918063002.htm
University Of California - Davis. "Engineers Model Blood Flow." ScienceDaily. www.sciencedaily.com/releases/2002/09/020918063002.htm (accessed September 30, 2014).

Share This



More Health & Medicine News

Tuesday, September 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How 'Yes Means Yes' Defines Sexual Assault

How 'Yes Means Yes' Defines Sexual Assault

Newsy (Sep. 29, 2014) Aimed at reducing sexual assaults on college campuses, California has adopted a new law changing the standard of consent for sexual activity. Video provided by Newsy
Powered by NewsLook.com
Scientists May Have Found An Early Sign Of Pancreatic Cancer

Scientists May Have Found An Early Sign Of Pancreatic Cancer

Newsy (Sep. 29, 2014) Researchers looked at 1,500 blood samples and determined people who developed pancreatic cancer had more branched chain amino acids. Video provided by Newsy
Powered by NewsLook.com
Colo. Doctors See Cluster of Enterovirus Cases

Colo. Doctors See Cluster of Enterovirus Cases

AP (Sep. 29, 2014) Doctors at the Children's Hospital of Colorado say they have treated over 4,000 children with serious respiratory illnesses since August. Nine of the patients have shown distinct neurological symptoms, including limb weakness. (Sept. 29) Video provided by AP
Powered by NewsLook.com
Dr.'s Unsure of Cause of Fast-Spreading Virus

Dr.'s Unsure of Cause of Fast-Spreading Virus

AP (Sep. 29, 2014) Doctors at the Children's Hospital of Colorado say they have treated over 4,000 children with serious respiratory illnesses since August. Nine of the patients have shown distinct neurological symptoms, including limb weakness. (Sept. 29) Video provided by AP
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