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.


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:

(Date:11/30/2015)... ... November 30, 2015 , ... During the National ... caregivers and held two webinars on topics of ‘Medical and Palliative Care Decisions,’ ... at . , With a loved one's diagnosis of mesothelioma, the ...
(Date:11/30/2015)... ... November 30, 2015 , ... ... . The directory is specialized and only includes chiropractic clinics in the US. ... competent and trustworthy alternative health practitioner when back pain sets in. When people ...
(Date:11/30/2015)... ... November 30, 2015 , ... In an effort ... the Word of Life Christian Church of Flint, MI, hosted a family-oriented evening ... 1.25 ton pile of candy dubbed “Candy Mountain”. , A Forever Recovery, a ...
(Date:11/30/2015)... VA (PRWEB) , ... November 30, 2015 , ... ... Foundation kicked off its annual fundraising campaign to raise funds for its research, ... raises approximately 10% of the organization’s annual funding. , The Mesothelioma Applied Research ...
(Date:11/30/2015)... ... November 30, 2015 , ... The ... in Dallas, TX, on January 29 and 30, 2016. The course welcomes dental ... of their practices, to learn how to better succeed in the modern dental ...
Breaking Medicine News(10 mins):
(Date:11/30/2015)... 30, 2015 Diplomat Pharmacy, Inc. (NYSE: ... the Detroit Free Press as a Top Workplace , ... to work for in 2015. ... 100 winners annually, based on employee surveys rating company leadership, ... Workplaces are based solely on employee feedback. The survey is ...
(Date:11/30/2015)... , November 30, 2015 global cell ... of US$6.1 bn to US$11.3 bn by 2022 at a CAGR ... is expected to grow from its 2013 value of US$6.1 bn ... --> Transparency Market Research has announced the release of ... According to the report, titled ,Cell Culture Market - Global Industry ...
(Date:11/30/2015)... and BOCA RATON, Fla. , ... the Commercialization of Public Research (the Institute) announced ... KynderMed , a medical device start-up company with ... new company creation based on publicly-funded research, and bridges ... Florida -based universities and research institutions. ...
Breaking Medicine Technology: