Navigation Links
MR Angiography Detects Blocked Arteries Accurately

According to a study in the February issue of Radiology, a novel type of contrast-enhanced Magnetic Resonance (MR) Angiography is highly accurate in identifying blockages// in the arteries that carry blood to the brain.

"Contrast-enhanced MR Angiography provided highly accurate information about the supra-aortic arteries," said Kambiz Nael, M.D., research fellow and radiology resident at the David Geffen School of Medicine at UCLA in Los Angeles. "MR Angiography produced results comparable to the gold standard of digital subtraction Angiography (DSA) and multidetector Computed Tomography (CT) Angiography.

In addition, this technology produced images with higher resolution over a larger field of view in a shorter amount of time than previous contrast-enhanced MR Angiography techniques," he said.

Arterial occlusive disease consists of narrowed or blocked arteries. It commonly affects the supra-aortic arteries, which supply blood to the brain, and is a leading cause of stroke. Currently DSA is the reference standard for evaluating these arteries. However, in 2.5 percent of cases DSA can cause a mini-stroke, and, in rare instances, permanent neurological damage.

Therefore, CT and MR Angiography are increasingly being used to diagnose arterial occlusive disease. As technology has improved, MR Angiography offers advantages over CT, particularly because it delivers no ionizing radiation to the patient.

"MR Angiography, using a small quantity of MRI dye injected into a vein in the arm, can produce detailed images of the arteries supplying the brain and can detect even minor degrees of narrowing or blockage. It does not involve exposure to x-rays and is widely regarded as a very safe, painless test," Dr. Nael said.

The researchers studied 80 patients (44 men and 36 women) with suspected arterial occlusive disease to compare the performance of contrast-enhanced MR Angiography to DSA and CT Angiography. Two independent readers evaluated the images. Blockages were detected with MR Angiography in 208 (reader 1) and 218 (reader 2) segments of artery, which correlated significantly to the DSA and CT findings.

In addition, MR Angiography proved highly accurate (94 to 100 percent) for detecting blockages of over 50 percent, and image quality was rated sufficient to excellent for 97 percent of the arterial segments evaluated.

"This procedure should be highly cost effective for clinical use, because of the speed and modest dose of contrast required," Dr. Nael said. "In the absence of contraindications to MRI, I would recommend MR Angiography over DSA and CTA for routine use—avoiding increased risk of mini-stroke and radiation exposure."

Dr. Nael predicts that in most cases, contrast-enhanced MR Angiography could replace other diagnostic techniques for evaluation of all the arteries that supply blood to the brain. "As the technology evolves, MR Angiography will likely become even faster and more powerful," he said.

Source-Eurekalert
SRI
'"/>




Related medicine news :

1. CT Pulmonary Angiography Scan More Effective In Detecting Dangerous Blood Clots In The Legs
2. New Cardiac Angiography Technique For Improved Imaging Of Coronary Veins
3. Surupsinh Naik Undergoes Angiography
4. Helium And MRI Scanning Clearly Detects Smoker Lungs – Research Find
5. New Diagnostic Test Detects Avian Flu In Less Than 12 Hours
6. MRI Detects Early Heart Damages In Patients
7. A Novel Technique That Detects "Cancer Genes" From The Breath Of Smokers
8. South Korea Detects Dioxin in U.S. Beef Consignment
9. Simple Test Detects Genetic Signs of Lung Cancer in a Patient’s Sputu
10. Blocked viens block eye sight
11. Treating Blocked Arteries In The Lower Limbs
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/4/2016)... ... 2016 , ... A new collaboration will give more researchers access to the ... and analytics leader SAS will provide researchers worldwide with data management and analytics tools ... System. , The DCRI and SAS share the goal of greater transparency and ...
(Date:5/4/2016)... ... May 04, 2016 , ... Washington Wellness Center today ... central New Jersey residents. What started out as an idea to provide a ... integrated approach to healthcare. , Developed by Dr. David Swanekamp, Chiropractic Physician , ...
(Date:5/4/2016)... ... ... Dr. Elyson and Dr. Assili, dentist in Northridge , announce that ... a common dental procedure, is performed for many adolescents and young adults today. While ... of complications. By providing wisdom tooth removal surgery at their office, Dr. Elyson and ...
(Date:5/4/2016)... ... May 04, 2016 , ... Recognizing that lifestyle medicine is essential to health ... have tapped David Katz, MD, MPH, president of the American College of Lifestyle Medicine, ... medicine is especially gratifying,” said Katz. “There is so much opportunity to add years ...
(Date:5/4/2016)... ... May 04, 2016 , ... Pharmacy ... announced that it was chosen as the Pharmaceutical News Provider of the Year ... awards acknowledge the hard work and dedication of community members who strive to ...
Breaking Medicine News(10 mins):
(Date:5/4/2016)... 2016 Research and ... Acute Ischemic Stroke Market and Competitive Landscape ...      (Logo: http://photos.prnewswire.com/prnh/20160330/349511LOGO ... Stroke Market and Competitive Landscape Highlights 2016, ... pipeline products, Acute Ischemic Stroke epidemiology, Acute ...
(Date:5/3/2016)... , May 3, 2016 BioNovus Innovations ... Institute for Advancing Medical Innovation (IAMI) today announced ... drugs, diagnostics and medical devices. An ... with rights to license, develop and commercialize medical ... "This partnership represents a significant advance ...
(Date:5/3/2016)... 3, 2016   BIOTRONIK , a leader ... Food and Drug Administration (FDA) approval of Iperia ... heart failure patients with access to diagnostic magnetic ... remote monitoring with daily automatic transmission and closed ... in response to physiological demands. ...
Breaking Medicine Technology: