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:6/26/2016)... ... 2016 , ... Brent Kasmer, a legally blind and certified personal trainer is helping to develop ... The fitness app plans to fix the two major problems leading the fitness industry today:, ... all type program , They don’t eliminate all the reasons people quit their ...
(Date:6/25/2016)... , ... June 25, 2016 , ... "With 30 hand-drawn ... specific project," said Christina Austin - CEO of Pixel Film Studios. , ProHand ... all within Final Cut Pro X . Simply select a ProHand generator and ...
(Date:6/25/2016)... ... June 25, 2016 , ... Conventional wisdom preaches the benefits ... terms of the latter, setting the bar too high can result in disappointment, perhaps ... slow progress toward their goal. , Research from PsychTests.com reveals that ...
(Date:6/24/2016)... Texas (PRWEB) , ... June 24, 2016 , ... ... International Conference and Scientific Sessions in Dallas that it will receive two significant ... of the grants came as PHA marked its 25th anniversary by recognizing patients, ...
(Date:6/24/2016)... ... ... People across the U.S. are sharpening their pencils and honing their writing ... which patients and their families pay tribute to a genetic counselor by nominating him ... Genetic Counselors (NSGC) Annual Education Conference (AEC) this September. , In April, Genome ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... June 23, 2016 Research and Markets ... Market - Forecast to 2022" report to their offering. ... method for the patients with kidney failure, it replaces the ... from the patient,s blood and thus the treatment helps to ... chloride in balance. Increasing number of ESRD ...
(Date:6/23/2016)... a startling report released today, National Safety Council research ... proven plan to eliminate prescription opioid overdoses. Prescription Nation ... tackling the worst drug crisis in recorded U.S. history, assigned a ... , New Mexico , Tennessee ... failing states, three – Michigan , ...
(Date:6/23/2016)... , June 23, 2016 ... CAPR ), a biotechnology company focused on ... today announced that patient enrollment in its ongoing ... Duchenne) has exceeded 50% of its 24-patient target. ... in the third quarter of 2016, and to ...
Breaking Medicine Technology: