Beginning in mid-February 2008, the 1997-2007 online version of the Science Watch® newsletter, ESI-Topics.com, and in-cites.com, will all be featured together on the redesigned ScienceWatch.com. All previous content from the three sites will be permanently archived, and remain accessible from any existing bookmarks to the archived pages. No new content will be added to this site. Updates and new content (updated biweekly) are available at ScienceWatch.com now.

Emerging Research Fronts Comments

Return to menu of Emerging Research Fronts

ESI Special Topics, April 2003
Citing URL: http://www.esi-topics.com/erf/2003/april03-ZahiFayad.html

From •>>April 2003

Zahi A. Fayad, Ph.D. answers a few questions about this month's emerging research front in field of Clinical Medicine:

Clinical Medicine
Title: "Noninvasive in vivo human coronary artery lumen and wall imaging using black-blood magnetic resonance imaging"

Authors: Fayad, ZA;Fuster, V;Fallon, JT;Jayasundera, T;Worthley, SG;Helft, G;Aguinaldo, JG;Badimon, JJ;Sharma, SK
Journal: CIRCULATION, 102: (5) 506-510 AUG 1 2000
Addresses: 
CUNY Mt Sinai Sch Med, Zena & Michael A Wiener Cardiovasc Inst, Box 1234, New York, NY 10029 USA.
CUNY Mt Sinai Sch Med, Zena & Michael A Wiener Cardiovasc Inst, New York, NY 10029 USA.
CUNY Mt Sinai Sch Med, Dept Radiol, New York, NY 10029 USA.
CUNY Mt Sinai Sch Med, Dept Med, New York, NY 10029 USA.
CUNY Mt Sinai Sch Med, Dept Pathol, New York, NY 10029 USA.


ST:  Why do you think your paper is highly cited?

Cardiovascular disease continues to be the leading cause of death in developed countries, and is rapidly becoming the number one killer in developing countries.  The recognition of atherosclerosis in the pathogenesis of acute coronary syndromes has generated a desire to identify and characterize atherosclerotic plaque and to develop new imaging modalities that will help to identify plaques that are prone to provoke acute atherothrombotic events through erosion or rupture. Our paper showed for the first time that now we can use magnetic resonance imaging noninvasively to find atherosclerotic plaques in the coronary arteries.

Coronary - Dangerous Eccentric coronary plaque detected by black blood MRI: The black blood MRI image shows the buildup of plaques in the coronary artery. A large plaque eccentric in shape and rich in fat (see magnified square area see arrow). Since this plaque is mainly composed of fat it is soft and vulnerable to rupture and may cause a heart attack. Therefore MRI can predict which plaques are dangerous and will cause a heart attack.

ST:  Does it describe a new discovery or new methodology that's useful to others?

The paper describes the use of a high-resolution MRI method to look at atherosclerotic plaque in the coronary arteries that is insensitive to motion artifacts from the motion of the heart or respiration. It blacks out the bright signal from the flowing blood in the lumen of the coronary artery to reveal the atherosclerotic vessel wall. This "black blood" technique has become the preferred research noninvasive method to study plaque buildup in the arteries.

ST:  Could you summarize the significance of your paper in layman's terms?

Heart disease is the number one killer in the Western world. We now know that most heart attacks are not only caused by clogged heart arteries (pipes). Clogged pipes do cause chest pain and other unpleasant symptoms, but they are responsible for no more than 15% of heart attacks. Instead, the deadlier culprits lie embedded in the walls of the pipes themselves: deposits of plaques (fat) that don’t cause symptoms, since they don’t dam up or stop blood flow to the heart. However, they can rupture without warming and lead to blood clots. These blood clots either dissipate quickly or may block blood flow to the heart causing an attack. Right now standard screening tests used to detect signs of cardiovascular problems simply are not sophisticated enough to locate or are too invasive. Our paper demonstrated a technique using magnetic resonance imaging that does not carry any risk or invasiveness that can look directly at the wall of the heart arteries and has the potential to detect the diseases that carry danger.

ST:  How did you become involved in this research?

I am fortunate to collaborate with one of the leading cardiologists and scientists in this field, Dr. Valentin Fuster, who stimulated me into looking into noninvasive imaging technologies for the early detection of coronary artery disease. The support of the leadership at Mount Sinai such as Dr. Burton Drayer (Chairman of Radiology), and the efforts of my research team have been critical in the success of this work, as has the participation of the National Lung and Blood Institute at the National Institutes of Health, and of the Radiological Society of North America.End

Zahi A. Fayad, Ph.D.
Associate Professor, Departments of Radiology and Medicine (Cardiology)
Director, Imaging Science Laboratories
Director, Cardiovascular Imaging Research
Director, Eva and Morris Feld Cardiovascular MRI Research Laboratory
Mount Sinai School of Medicine
New York, NY, USA

Return to Emerging Research Fronts | Return to Special Topics main menu
 

ESI Special Topics, April 2003
Citing URL: http://www.esi-topics.com/erf/2003/april03-ZahiFayad.html

ScienceWatch.com - Tracking Trends and Perfomance in Basic Research
Go to the new ScienceWatch.com

Write to the Webmaster with questions/comments. Terms of Usage.
The Research Services Group of Thomson Scientific |
(c) 2008 The Thomson Corporation.