CT angiography 'highly accurate' for detection of high-grade artery stenosis

May 01, 2006

MD-CTA (64-slice CT angiography) is highly accurate in detecting and grading extracranial internal carotid artery (ICA) stenoses in which the artery is closed between 70-90% when compared to color-coded Doppler sonography, power Doppler and B-flow ultrasound, according to a new study by researchers from the University of Munich-Grosshadern in Munich, Germany.

For the study, the researchers analyzed 37 patients with 43 known or suspected extracranial ICA stenoses who underwent MDCTA and vascular ultrasound. The researchers found that "excellent" visualization of vessels was achieved on MD-CTA in all cases. Of the 43 stenoses, 28 were closed between 70-80%, 10 were closed between 80-90% and all were correctly identified with MD-CTA and vascular ultrasound.

According to the researchers, it is important to be able to identify high-grade ICA stenosis to plan the appropriate surgery and therapy. "Studies have shown that symptomatic patients with high-grade stenoses of the extracranial ICA profit from thromboendarterectomy, an operation that involves opening the artery and removing the occlusion. In addition, the morphology of the stenosis, especially the detection of ulcerated plaques and thrombi, is crucial for the planning of interventional treatment," said Dirk Andre Clevert, MD, lead author of the study.

"The diagnostic investigation of stenoses for surgical planning should include a combination of MD-CTA and vascular ultrasound, because ultrasound has also gained a high importance as a generally available non-invasive imaging method. For the depiction of ICA segments within the skull, MD-CTA is especially necessary for preoperative planning," said Dr. Clevert.

The full results of the study will be presented on Monday, May 1, 2006 during the American Roentgen Ray Society Annual Meeting in Vancouver, BC.
About ARRS
The American Roentgen Ray Society (ARRS) was founded in 1900 and is the oldest radiology society in the U.S Radiologists from all over the world attend the ARRS Annual Meeting to take part in instructional courses, scientific paper presentations, symposiums, new issues forums and scientific and commercial exhibits related to the field of radiology. The ARRS is named after Wilhelm Röentgen, who discovered the x-ray in 1895.

American College of Radiology

Related Ultrasound Articles from Brightsurf:

An integrated approach to ultrasound imaging in medicine and biology
Announcing a new article publication for BIO Integration journal. In this editorial, Co-Editor-in-Chief, Pingtong Huang considers an integrated approach to ultrasound imaging in medicine and biology.

PLUS takes 3D ultrasound images of solids
A two-in-one technology provides 3D images of structural defects, such as those that can develop in aircraft and power plants.

Scientists develop noninvasive ultrasound neuromodulation technique
Researchers from the Shenzhen Institutes of Advanced Technology (SIAT) of the Chinese Academy of Sciences developed a noninvasive ultrasound neuromodulation technique, which could potentially modulate neuronal excitability without any harm in the brain.

World's first ultrasound biosensor created in Australia
Most implantable monitors for drug levels and biomarkers invented so far rely on high tech and expensive detectors such as CT scans or MRI.

Ultrasound can make stronger 3D-printed alloys
A study just published in Nature Communications shows high frequency sound waves can have a significant impact on the inner micro-structure of 3D printed alloys, making them more consistent and stronger than those printed conventionally.

Full noncontact laser ultrasound: First human data
Conventional ultrasonography requires contact with the patient's skin with the ultrasound probe for imaging, which causes image variability due to inconsistent probe contact pressure and orientation.

Ultrasound aligns living cells in bioprinted tissues
Researchers have developed a technique to improve the characteristics of engineered tissues by using ultrasound to align living cells during the biofabrication process.

Ultrasound for thrombosis prevention
Researchers established real-time ultrasonic monitoring of the blood's aggregate state using the in vitro blood flow model.

Ultra ultrasound to transform new tech
A new, more sensitive method to measure ultrasound may revolutionize everything from medical devices to unmanned vehicles.

Shoulder 'brightness' on ultrasound may be a sign of diabetes
A shoulder muscle that appears unusually bright on ultrasound may be a warning sign of diabetes, according to a new study.

Read More: Ultrasound News and Ultrasound Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.