Teodoro Martin MD, Presenter: Nothing to Disclose

Antonio Luna MD, Abstract Co-Author: Nothing to Disclose

Jordi Broncano MD, Abstract Co-Author: Nothing to Disclose

Jose Pablo Martinez Barbero MD, PhD, Abstract Co-Author: Nothing to Disclose

1. Review the main MRI neurography techniques for the evaluation of brachial and lumbar plexi as well as peripheral nerves. 2. Define the technical adjustments necessary to obtain high resolution neurographic sequences based on diffusion weighted and diffusion tensor imaging. 3. Illustrate with practical examples the utility of DWI and DTI-neurography for evaluation of both normal and pathological peripheral nerves and its advantages over morphological MRI-neurography techniques.  

1. Introduction 2. Morphological MRI-neurography techniques : T2-TSE, STIR, 3D isotropic T1 and T2-weighted sequences, 3. Functional MRI neurography   a. DWI neurography   b. DTI neurography 4. Why to use DWI and DTI neurography:   a. Advantages and disadvantages   b. Integration in MRI protocols   c. Technical and anatomical considerations   d. 1,5 vs 3.0 Tesla 5. Clinical applications   a. Braquial and lumbar plexopathy   b. Carpal tunnel syndrome   c. Pyramidal syndrome   d. Pheripheral nerve tumors   SUMMARY The use of DWI based neurographic sequences allow not only a morphological approach to study nerve structures but also provides functional information. DWI and DTI parameters derived such as ADC, mean diffusivity or fractional anisotropy may be used as potential biomarkers of axonal nerve integrity.    

http://abstract.rsna.org/uploads/2014/14015342/14015342_t8md.pdf

Martin, T, Luna, A, Broncano, J, Martinez Barbero, J, MRI-Neurography: Why Is It Necessary to include a Diffusion-weighted Imaging Approach?.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14015342.html