Navigation Links
CT Scans Deemed Best for Checking Heart Arteries
Date:2/2/2010

But if it's muscle tissue that needs examining, use MRI, expert says

TUESDAY, Feb. 2 (HealthDay News) --When a doctor wants to assess the condition of heart arteries without putting a gadget into those blood vessels, the X-ray technology called computed tomography -- more commonly called a CT scan -- is better than magnetic resonance imaging, or MRI, a German review of studies has found.

"For ruling out coronary artery disease, CT is more accurate than MRI," researchers from Humboldt University in Berlin said in a report in the Feb. 2 issue of the Annals of Internal Medicine.

The standard method for checking heart arteries is coronary angiography, which involves threading a thin, flexible tube, called a catheter, into the heart. But doctors do not always want to run the risks that can be associated with that technique, and the leading candidates for less invasive assessment are CT and MRI.

CT is a scanning technique using X-rays that produce a set of slice-by-slice heart images, up to 16 slices, depending on the power of the machine. MRI uses a powerful magnetic field and pulses of radiowave energy to create images.

The German researchers looked at results of 109 published studies of noninvasive heart artery imaging, including 89 that used CT and 20 that used MRI and involving 8,505 people. In the studies of people with suspected coronary artery disease, CT proved to be 97 percent sensitive, compared with 87 percent sensitivity for MRI exams, the analysis found. Sensitivity rates the ability of a test to correctly identify people who have a particular disease.

"This article holds no surprises whatever," said Dr. Uwe Joseph Schoepf, a professor of radiology and cardiology at the Medical University of South Carolina. "This is really something that is sort of common trade knowledge."

Indeed, CT and MRI are not contenders in clinical practice but are used for different reasons to make different assessments, Schoepf said. "It is a question of what specific question you are looking to answer," he said.

CT is the preferred noninvasive technology for assessing the condition of heart arteries, whether there is narrowing that might end with the total blockage that causes a heart attack, Schoepf said. "MRI is not in current use to look at coronary artery disease," he said. "We use MRI angiography if we are interested in heart muscle, as when there are congenital heart abnormalities in children. The strength of MRI is that it shows tissue configuration."

That difference helps explain why there are so few studies doing head-to-head comparison of CT versus MRI, he said. The German analysis found only five such studies.

Dr. Ricardo Cury, director of cardiac MRI and CT at Baptist Cardiac & Vascular Institute in Miami and a consultant radiologist at Massachusetts General Hospital, said that the "meta-analysis demonstrates a knowledge that we have accumulated for the past several years."

"For imaging of the cardiac arteries, CT is more robust," Cury said. "We perform MRI on a clinical basis more for functional assessment, as opposed to looking at the coronary arteries."

Though that difference is well established among radiologists, the new study may be of assistance in the general medical community, including general cardiologists, because "it summarizes the advantages of CT at this point in time," he said.

Indeed, CT appears to be better for assessment of coronary artery disease, matched against not only MRI but other methods, such as echocardiography, he said.

More information

The Cleveland Clinic has more on CT, MRI and similar tests.



SOURCES: Uwe Joseph Schoepf, M.D., professor, radiology and cardiology, Medical University of South Carolina, Charleston, S.C.; Ricardo Cury, M.D., director, cardiac MRI and CT, Baptist Cardiac & Vascular Institute, Miami, and consultant radiologist, Massachusetts General Hospital, Boston; Feb. 2, 2010, Annals of Internal Medicine


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. CT Scans Reduce Unneeded Appendectomies in Women
2. Brain Scans Reveal Video Gamers Secrets
3. PET Scans May Help Diagnose Movement Disorders
4. Combo PET-CT Scans Can Spot Hidden Cancers
5. Patient Factors Mar Accuracy of Multi-Detector CT Scans
6. Patients With Pacemakers Should Avoid MRI Scans
7. Studies Quantify Cancer Risks From CT Scans
8. Simple blood test could reduce repeat breast MRI scans in premenopausal women with irregular periods
9. Radiation From Medical Scans Soaring
10. CT Scans Surpass X-Rays for Swine Flu: Study
11. CT scans better than X-rays when detecting abnormalities in patients with H1N1 virus
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/2/2016)... Milford, NJ (PRWEB) , ... December 02, 2016 , ... ... Nothing Water has some unique properties including its unmatched natural purity of just 6 ... as clean and crisp. , Nothing Water has been available in several ShopRite and ...
(Date:12/2/2016)... ... December 02, 2016 , ... Clarify Health ... has raised $6.0 million in an initial round of funding. The round was ... and their caregivers can receive far better care through the application of the ...
(Date:12/2/2016)... ... December 02, 2016 , ... ‘Tis the season for giving! Today, 20 ... the National Family Partnership and the Drug Enforcement Administration as part of the National ... the 10 winning schools who decorated their campuses with this year’s Red Ribbon Week ...
(Date:11/30/2016)... PALMYRA, Wisconsin (PRWEB) , ... November 30, 2016 ... ... inclusion in the 2016 Deloitte Wisconsin 75, an annual ranking and recognition of ... consecutive year on the list, having ranked from 2008-2016. In addition, Standard Process ...
(Date:11/30/2016)... ... November 30, 2016 , ... ... and stylish design wanted by today’s consumers at an affordable price, is now ... says the new watch is “a game changer” when it comes to the ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... in the ECG Cables And ECG Leadwires Market owing to ... devices. On the other hand, the Asia-Pacific ... rate during the forecast period. The market players ... plc ( Ireland ), Koninklijke Philips N.V. ( ... ( China ), held major share of the ...
(Date:12/2/2016)... PUNE, India , December 2, 2016 /PRNewswire/ ... research report "In Vitro Diagnostics/IVD Market by Product ... Diagnostics, Hematology), Application (Diabetes, Oncology, Cardiology, Nephrology, Infectious ... the global market is valued at USD 60.22 ... grow at a CAGR of 5.5% during the ...
(Date:12/2/2016)... On Thursday, December 1st 2016, ... research, development and innovation in the biopharmaceutical industry at ... in the presence of Sergey Tsyb, Vice Minister of ... , Natalia Sanina, First Vice Chairman of the ... of Roszdravnadzor, National Service of Control in Healthcare, Sergey ...
Breaking Medicine Technology: