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MRI Handbook: MR Physics, Patient Positioning, and Protocols
Magnetic resonance imaging MRI is the imaging modality of choice for the evaluation of the brachial plexus due to its superior soft tissue resolution and multiplanar capabilities. The evaluation of the brachial plexus however represents a diagnostic challenge for the clinician and the radiologist. The imaging assessment of the brachial plexus, in particular, has been traditionally challenging due to the complexity of its anatomy, its distribution in space and due to technical factors. Herein, we describe a modified technique used in our institution for the evaluation of the brachial plexus which led to a substantial decrease in scanning time and to better visualization of all the segments of the brachial plexus from the roots to the branches, in only one or two images, facilitating therefore the understanding of the anatomy and the interpretation of the study. To our knowledge, we are the first group to describe this technique of imaging the brachial plexus. We illustrate the benefit of this modified technique with an example of a patient with a lesion in the proximal branches of the left brachial plexus that was clinically suspected but missed on conventional brachial plexus imaging for six consecutive years. In addition, we review the common and infrequent benign and malignant pathology that can affect the brachial plexus.
Coverage should be from T11 down to S2, with sufficient slices to include left and right nerve roots see Fig. This technique is entirely dependent upon the availability of a small Field of View surface coil see below. If your unit does not possess one, complete the recommended sequences, using either the spine coil or a larger surface coil — if possible, the patient should be positioned to lie on the affected side this minimizes motion artefact from breathing. Ascertain the exact position of the suspected tear and mark this with an oil capsule. Position the patient supine and plug the coil in. Supine, hand by side, palm up. If palm up not possible, then thumb up.
This site provides clear and easily accessible guide to many of the practical aspects of MRI including MRI protocols, MRI planning, MRI anatomy, MRI.
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Cardiovascular MRI offers you valuable information for a number of sophisticated clinical questions, as well as excellent soft tissue differentiation, high spatial and temporal resolution, and 3D and 4D data acquisition. Today, MRI is widely regarded as one of the most comprehensive diagnostic tools in cardiology, but also as a highly complex examination. Siemens helps you bring cardiac MRI into your clinical routine. Connect with new capabilities. Gain speed, reliability and ease of use with BioMatrix Technology. Expand toward precision medicine by improving diagnostic accuracy and facilitating individual treatment strategies. Our MRI application portfolio enables you to overcome daily obstacles in cardiovascular imaging.