MR arthrography is more accurate than MR in diagnosing shoulder tears

Jan 06, 2009

MR arthrography of the shoulder allows physicians to better identify tears and provides patients with an accurate diagnosis to determine whether or not surgery is needed, according to a study performed at Neuroskeletal Imaging in Merritt Island, Florida.

The study included 150 patients who underwent both 3T MRI and MR arthrography examinations of the shoulder. "We did the study to see if MR, which is noninvasive, works as well as MR arthrography, an invasive procedure that some patients are fearful of having since contrast has to be injected into the shoulder," said Thomas Magee, MD, lead author of the study. The study found that MR arthrography was more accurate for making a diagnosis.

Sensitivity on conventional MRI for anterior labral tears was 83%; for posterior labral tears was 84%; for SLAP tears was 83%; for supraspinatus tendon tears was 92%; and for partial-thickness articular surface tears was 68%. Sensitivity on MR arthrography on the other hand was significantly higher. Sensitivity for anterior labral tears was 98%; for posterior labral tears was 95%; for SLAP tears was 98%; for supraspinatus tendon tears was 100%; and for partial-thickness articular surface tears was 97%. "With MR arthrography we were able to see things with a high degree of accuracy in the shoulder," said Dr. Magee.

"Resolution and picture quality using 3T MRI is high in the shoulder, except for lesions that are hidden without distention (swelling) of the joint. During MR arthrography, the distention of the joint allowed us to uncover lesions that could not be seen on conventional MRI," said Dr. Magee.

"The performance of MR arthrograms allows us to see additional, pertinent surgical lesions and provides a better road map for surgeons. Patients should have MR arthrography before surgery to provide an accurate diagnosis, determining whether or not they really even need surgery," he said.

"If an MR arthrogram is normal, it is very likely to be normal during surgery," said Dr. Magee.

Source: American Roentgen Ray Society

Explore further: What are the chances that your dad isn't your dad?

add to favorites email to friend print save as pdf

Related Stories

Building a better trash can

Mar 20, 2013

What does it take to create a trash can? Ask Theron Klos. He's Berkeley's central-campus grounds manager, the guy beaming like a proud parent as dozens of large, hexagon-shaped black receptacles – with ...

Common hip disorder can cause sports hernia

Feb 19, 2011

Sports hernias are commonly found in individuals with a mechanical disorder of the hip and can be resolved with surgery to fix the hip disorder alone in some cases, according to a recent study. The research, conducted by ...

Recommended for you

What are the chances that your dad isn't your dad?

11 hours ago

How confident are you that the man you call dad is really your biological father? If you believe some of the most commonly-quoted figures, you could be forgiven for not being very confident at all. But how ...

New technology that is revealing the science of chewing

Apr 15, 2014

CSIRO's 3D mastication modelling, demonstrated for the first time in Melbourne today, is starting to provide researchers with new understanding of how to reduce salt, sugar and fat in food products, as well ...

After skin cancer, removable model replaces real ear

Apr 11, 2014

(HealthDay)—During his 10-year struggle with basal cell carcinoma, Henry Fiorentini emerged minus his right ear, and minus the hearing that goes with it. The good news: Today, the 56-year-old IT programmer ...

Italy scraps ban on donor-assisted reproduction

Apr 09, 2014

Italy's Constitutional Court on Wednesday struck down a Catholic Church-backed ban against assisted reproduction with sperm or egg donors that has forced thousands of sterile couples to seek help abroad.

User comments : 0

More news stories

Down's chromosome cause genome-wide disruption

The extra copy of Chromosome 21 that causes Down's syndrome throws a spanner into the workings of all the other chromosomes as well, said a study published Wednesday that surprised its authors.

Researchers see hospitalization records as additional tool

Comparing hospitalization records with data reported to local boards of health presents a more accurate way to monitor how well communities track disease outbreaks, according to a paper published April 16 in the journal PLOS ON ...

Ebola virus in Africa outbreak is a new strain

The Ebola virus that has killed scores of people in Guinea this year is a new strain—evidence that the disease did not spread there from outbreaks in some other African nations, scientists report.