Navigation Links
Ultrasound used to predict heart attack risk

OAK BROOK, Ill. Repeat exams using widely available and inexpensive ultrasound imaging could help identify patients at high risk for a heart attack or other adverse cardiovascular events, according to a study published in the September issue of the journal Radiology.

Researchers performed ultrasound imaging on the carotid arteries of 1,268 patients who were asymptomatic but at high risk for cardiovascular disease. Of those, ultrasound determined that 574 patients had carotid artery disease, as determined by the amount of plaque built up in the two vessels that supply blood to the head and neck. Each of those patients had a second ultrasound exam six to nine months later to measure changes in the plaque lining the arteries.

"Determining the degree of stenosis, or how much the artery has narrowed, is insufficient to predict patient risk," said lead researcher Markus Reiter, M.D., from the Department of Angiography and Interventional Radiology at Medical University Vienna in Austria. "We know that the majority of cardiovascular and cerebrovascular events occur in patients whose blood vessels are less than 70 percent narrowed."

Reiter and his team used ultrasound images and computer-assisted gray scale median (GSM) measurements to determine the density of the plaque lining the carotid arteries. Plaques that appear dark on ultrasound images and have a low GSM level are suggested to be associated with an increased risk for clinical complications and seem to represent unstable plaques, which are more likely to rupture or burst.

The study's follow-up ultrasounds revealed that GSM levels had decreased in 230 (40 percent) of the patients. Of those, 85 (37 percent) experienced a major adverse cardiovascular event within three years of the second ultrasound. Examples of these events include heart attack, stroke, coronary artery bypass, surgery or other intervention.

In 344 (60 percent) of the patients, ultrasound GSM levels had increased between the baseline and follow-up ultrasound examinations. Of those patients, 92 (28 percent) experienced a major adverse cardiovascular event.

"Patients with a reduction in GSM levels from their baseline ultrasound to the follow-up ultrasound exhibited a significantly increased risk for near-future adverse event compared to patients with increasing GSM levels," said Dr. Reiter.

It is important to note that the results showed that vulnerable plaque in the carotid artery was not only an indicator of increased risk of stroke downstream from the carotid artery, but also was associated with disease progression elsewhere in the cardiovascular system.

Although additional studies are needed, Dr. Reiter said measuring GSM levels on serial ultrasound examinations may be a noninvasive way to identify the presence of vulnerable plaques and improve the effectiveness of therapeutic strategies.

"This technique will give us additional information to use in selecting patients that need aggressive treatment," he said.


Contact: Linda Brooks
Radiological Society of North America

Related medicine news :

1. Heel Ultrasound Helps Detect Fracture Risk
2. Accuracy of ultrasound screening in pregnancy: Effects of examiner and device quality unclear
3. Simple ultrasound exam may predict osteoporosis risk
4. UltraShape(R) Commences Pivotal Study for First Non-Invasive Fat Reduction and Body Contouring Device Using Non-Thermal Selective Focused Ultrasound
5. New Heart Ultrasound Research Shows Hope for Diagnosing and Treating Fatal Heart Conditions
6. Siemens New Ultrasound Platform Revolutionizes the Paradigm of Echocardiography
7. Mindrays DC-3 Color Ultrasound Gains U.S. FDA 510(k) Clearance
8. ALOKA to Unveil a New Compact ProSound Diagnostic Ultrasound System
9. Journal of Ultrasound In Medicine features bioeffects consensus report
10. UT Southwestern researcher: Supplemental breast ultrasound boosts cancer detection
11. Adding ultrasound screening to mammography brings benefits, risks
Post Your Comments:
(Date:6/26/2016)... , ... June 26, 2016 , ... Brent Kasmer, a legally blind and certified personal ... personalized through a fitness app. The fitness app plans to fix the two major problems ... offer a one size fits all type program , They don’t eliminate all ...
(Date:6/25/2016)... ... 2016 , ... The temporary closing of Bruton Memorial Library on June 21 due to a ... new, often overlooked aspect of head lice: the parasite’s ability to live away from a ... occurrence, but a necessary one in the event that lice have simply gotten out of ...
(Date:6/25/2016)... ... June 25, 2016 , ... ... non-athletes recover from injury. Recently, he has implemented orthobiologic procedures as a method ... —Johnson is one of the first doctors to perform the treatment. Orthobiologics are ...
(Date:6/24/2016)... , ... June 24, 2016 , ... Those who have ... these feelings, many turn to unhealthy avenues, such as drug or alcohol abuse, as ... Michigan, has released tools for healthy coping following a traumatic event. , Trauma sufferers ...
(Date:6/24/2016)... ... June 24, 2016 , ... Global law firm Greenberg Traurig, P.A. ... The attorneys chosen by their peers for this recognition are considered among the top ... Shareholders received special honors as members of this year’s Legal Elite Hall of Fame: ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... , June 24, 2016 Research ... World Market for Companion Diagnostic Tests" report to their ... Market for Companion Diagnostics The World Market ... and personalized medicine diagnostics. Market analysis in the report includes ... Test Market (In Vitro Diagnostic Kits) by Region (N. America, ...
(Date:6/23/2016)... 2016  MedSource announced today that it has ... solution of choice.  This latest decision demonstrates MedSource,s ... their clients by offering a state-of-the-art electronic data ... nowEDC as the EDC platform of choice in ... "nowEDC has long been a preferred EDC platform ...
(Date:6/23/2016)... Roche (SIX: RO, ROG; OTCQX: RHHBY) announced ... BRAHMS PCT (procalcitonin) assay as a dedicated testing solution ... this clearance, Roche is the first IVD company in ... sepsis risk assessment and management. PCT is ... levels in blood can aid clinicians in assessing the ...
Breaking Medicine Technology: