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Anatomy in MRI Magnetic Resonance Imaging - Report Example

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"Anatomy in MRI Magnetic Resonance Imaging" paper examines the anatomy of the elbow joint, muscles and cartilages, neurovascular supply, two possible ways of patient positioning for MRI of the elbow, common artifacts encountered during elbow MRI, and rotator cuff.  …
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Anatomy in MRI Magnetic Resonance Imaging
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Download file to see previous pages On the medial side, there are Pronator terrace and superior flexor muscles connecting the wrist with the medial epicondyle of the Humerus. On the lateral side, there are Brachioradalis, Supinators, and extensor carpi radialis longus and extensor muscles of the wrist. The posterior part of the elbow is covered with triceps and anconeus muscles. Elbow joint is supported sideways by radial collateral ligament and ulnar collateral ligament and several articulating cartilages. (Trovinger, Sonin, Otte, N.p, p11)

Elbow joint is supplied with brachial artery and ulnar, median and radial nerves. The brachial artery is superficial in the cubital fossa lying over Brachialis. It gives out branches as ulnar and radial arteries. The median nerve gives out many branches supplying anterior muscles of the forearm (Bianchi, S. Martinoli (N.p) pp 1-10)

Arm overhead position- The patient is in a prone position with the injured hand over the head. This puts arm straight into the magnetic Isocenter for better homogenous field response. This is a comfortable position for patients who are afraid of low light conditions. The disadvantage of this position is that the pronation of the hand causes discomfort and restlessness to many patients. This causes unexpected hand movements resulting in image errors.

Arm by side position- The patient is lying in a supine position with the affected hand sideways. This is a convenient position for maximum patients, so there are fewer motion errors. But the disadvantage of it is that elbow is put in the area of the low homogenous field which affects image quality. (Anderson,2011)

Susceptibility artefact-This is also a very important artifact. It is seen in “high field strengths”, in the case of “metallic implants” and also in “gradient-recalled pulse sequence”. To control this artifact, voxel size is reduced while the image matrix is increased. And slice thickness is also reduced along with FOV to minimize susceptibility artifact. ...Download file to see next pagesRead More
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