Abstract
Magnetic Resonance arthrography is considered the gold standard imaging technique for the study of shoulder instability and tendon tears.We describe an image artefact, characterized by decreased signal intensity of the paramagnetic gadolinium chelate contrast agent during a shoulder Magnetic Resonance arthrography, attributable to an incorrect concentration which does not cause evident capsular damage and is completely absorbed after 48 h from the administration.
Highlights
Magnetic resonance (MR) arthrography is the gold standard imaging diagnostic technique for shoulder joint examination, mainly in the detection of elementary lesions causing shoulder instability and tendon tears [1].The first time of this technique consists in arthrography with direct injection of contrast agent into the joint with or without fluoroscopic guidance
To the best of our knowledge such an effect, using paramagnetic contrast agent not diluted with iodinated contrast solution in MR arthrography of the shoulder, has not been reported in vivo yet
During MR arthrography of the shoulder, we found an image artefact, characterized by decreased signal intensity of the contrast agent injected into the joint, caused by incorrect concentration
Summary
Magnetic resonance (MR) arthrography is the gold standard imaging diagnostic technique for shoulder joint examination, mainly in the detection of elementary lesions causing shoulder instability and tendon tears [1]. The first time of this technique consists in arthrography with direct injection of contrast agent into the joint with or without fluoroscopic guidance. In the second time of the procedure, MR examination is performed by various sequences, orientated on axial, oblique coronal and sagittal planes. The paramagnetic contrast agent used commonly is the dimeglumine salt of gadopentetate acid (Gd-DTPA) in different dilutions with saline solution. To the best of our knowledge such an effect, using paramagnetic contrast agent not diluted with iodinated contrast solution in MR arthrography of the shoulder, has not been reported in vivo yet
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