Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

MRI can predict risk of heart attacks

15.10.2002


For the first time, researchers have shown that magnetic resonance imaging (MRI) can predict the risk of heart attacks or cardiac deaths in coronary heart disease patients, according to a report in today’s rapid access issue of Circulation: Journal of the American Heart Association.



MRI can be used to locate tissue damage in a heart attack or pinpoint blockages, but it has not been used to predict heart attacks.

"This study is the first to determine that MRI is a strong prognostic forecaster," says lead author W. Gregory Hundley, a cardiologist and associate professor of internal medicine and radiology at the Wake Forest University School of Medicine in Winston-Salem, N.C. "Such information is important because it helps us identify which patients should receive more aggressive treatment."


Some medical centers use MRI to identify sites of reduced blood flow in the heart, which can cause chest pain, and to measure how much blood is ejected by the left ventricle – the heart’s main pumping chamber.

Hundley and his colleagues examined 279 men and women referred for MRI stress testing after their ultrasound screenings for heart disease were inconclusive. In an MRI stress test, drugs are used to stress the heart, then researchers study the reaction. Hundley notes the study yielded several important findings:

· Regardless of other risk factors, MRI can predict fatal and nonfatal heart attacks in patients whose left ventricle pumps out less than two-thirds of the blood a normal heart ejects;
· Someone whose damaged heart wall moves better at rest than when stressed also has an elevated risk; and
· The location in the heart of reduced blood flow or muscle damage apparently influences risk. Reduced blood flow in the apex of the left ventricle indicates a higher risk.

"These findings have interesting implications," Hundley says. "Patients with isolated disease near the base and the middle of the ventricle often are referred for procedures to restore blood flow. This study suggests that in doing so, you might alleviate chest pain but not prevent a cardiac death."

Co-authors are Timothy M. Morgan, Ph.D.; Christina M. Neagle, L.P.N.; Craig A. Hamilton, Ph.D.; Pairoj Rerkpattanapipat, M.D.; and Kerry M. Link, M.D. The study was partly funded by the National

CONTACT: For journal copies only,
please call: (214) 706-1396
For other information, call:
Carole Bullock: (214) 706-1279
Bridgette McNeill: (214) 706-1135

Carole Bullock | EurekAlert!

More articles from Health and Medicine:

nachricht Diabetes mellitus: A risk factor for early colorectal cancer
27.05.2020 | Nationales Centrum für Tumorerkrankungen (NCT) Heidelberg

nachricht Ultra-thin fibres designed to protect nerves after brain surgery
27.05.2020 | Martin-Luther-Universität Halle-Wittenberg

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Biotechnology: Triggered by light, a novel way to switch on an enzyme

In living cells, enzymes drive biochemical metabolic processes enabling reactions to take place efficiently. It is this very ability which allows them to be used as catalysts in biotechnology, for example to create chemical products such as pharmaceutics. Researchers now identified an enzyme that, when illuminated with blue light, becomes catalytically active and initiates a reaction that was previously unknown in enzymatics. The study was published in "Nature Communications".

Enzymes: they are the central drivers for biochemical metabolic processes in every living cell, enabling reactions to take place efficiently. It is this very...

Im Focus: New double-contrast technique picks up small tumors on MRI

Early detection of tumors is extremely important in treating cancer. A new technique developed by researchers at the University of California, Davis offers a significant advance in using magnetic resonance imaging to pick out even very small tumors from normal tissue. The work is published May 25 in the journal Nature Nanotechnology.

researchers at the University of California, Davis offers a significant advance in using magnetic resonance imaging to pick out even very small tumors from...

Im Focus: I-call - When microimplants communicate with each other / Innovation driver digitization - "Smart Health“

Microelectronics as a key technology enables numerous innovations in the field of intelligent medical technology. The Fraunhofer Institute for Biomedical Engineering IBMT coordinates the BMBF cooperative project "I-call" realizing the first electronic system for ultrasound-based, safe and interference-resistant data transmission between implants in the human body.

When microelectronic systems are used for medical applications, they have to meet high requirements in terms of biocompatibility, reliability, energy...

Im Focus: When predictions of theoretical chemists become reality

Thomas Heine, Professor of Theoretical Chemistry at TU Dresden, together with his team, first predicted a topological 2D polymer in 2019. Only one year later, an international team led by Italian researchers was able to synthesize these materials and experimentally prove their topological properties. For the renowned journal Nature Materials, this was the occasion to invite Thomas Heine to a News and Views article, which was published this week. Under the title "Making 2D Topological Polymers a reality" Prof. Heine describes how his theory became a reality.

Ultrathin materials are extremely interesting as building blocks for next generation nano electronic devices, as it is much easier to make circuits and other...

Im Focus: Rolling into the deep

Scientists took a leukocyte as the blueprint and developed a microrobot that has the size, shape and moving capabilities of a white blood cell. Simulating a blood vessel in a laboratory setting, they succeeded in magnetically navigating the ball-shaped microroller through this dynamic and dense environment. The drug-delivery vehicle withstood the simulated blood flow, pushing the developments in targeted drug delivery a step further: inside the body, there is no better access route to all tissues and organs than the circulatory system. A robot that could actually travel through this finely woven web would revolutionize the minimally-invasive treatment of illnesses.

A team of scientists from the Max Planck Institute for Intelligent Systems (MPI-IS) in Stuttgart invented a tiny microrobot that resembles a white blood cell...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Dresden Nexus Conference 2020: Same Time, Virtual Format, Registration Opened

19.05.2020 | Event News

Aachen Machine Tool Colloquium AWK'21 will take place on June 10 and 11, 2021

07.04.2020 | Event News

International Coral Reef Symposium in Bremen Postponed by a Year

06.04.2020 | Event News

 
Latest News

Black nitrogen: Bayreuth researchers discover new high-pressure material and solve a puzzle of the periodic table

29.05.2020 | Materials Sciences

Argonne researchers create active material out of microscopic spinning particles

29.05.2020 | Materials Sciences

Smart windows that self-illuminate on rainy days

29.05.2020 | Power and Electrical Engineering

VideoLinks
Science & Research
Overview of more VideoLinks >>>