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library:spine_deep_dive [2026/06/11 05:53] – scottlibrary:spine_deep_dive [2026/06/29 16:19] (current) – scott
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 {{:library:discanatomyslide.png?400|}}  {{:library:spinalcordanatomyslide.png?400|}}  {{:library:lumbarplexusanatomyslide.png?400|}}  {{:library:vertebralanatomyslide.png?400|}} {{:library:discanatomyslide.png?400|}}  {{:library:spinalcordanatomyslide.png?400|}}  {{:library:lumbarplexusanatomyslide.png?400|}}  {{:library:vertebralanatomyslide.png?400|}}
  
-====Brachial Plexus====+====Brachial Plexus Anatomy====
  
 The brachial plexus is a network of nerves exiting the spinal cord bilaterally between roughly C3/4 and T1/2 that travel through the axilla and innervate the forelimbs. Because the nerves travel up through the limb, positioning is important when examining the brachial plexus. Typically, extend and secure the limbs rostrally and symmetrically for best visualization. The use of an anterior coil can greatly improve SNR as well, as the ventral thorax can be far from the spine coil, especially in deep chested dogs. Quality imaging of the brachial plexus should include: The brachial plexus is a network of nerves exiting the spinal cord bilaterally between roughly C3/4 and T1/2 that travel through the axilla and innervate the forelimbs. Because the nerves travel up through the limb, positioning is important when examining the brachial plexus. Typically, extend and secure the limbs rostrally and symmetrically for best visualization. The use of an anterior coil can greatly improve SNR as well, as the ventral thorax can be far from the spine coil, especially in deep chested dogs. Quality imaging of the brachial plexus should include:
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 {{:library:nerve_stir_mip_rotate.gif?|}} {{:library:nerve_stir_mip_rotate.gif?|}}
  
-====Lumbar Plexus====+====Lumbar Plexus Anatomy====
  
 The lumbar plexus is a network of nerves that exit the lumbar spine bilaterally from L4 and innervate the hindlimbs. When imaging the lumbar plexus, it may be necessary to image down through the femurs, so positioning the hindlimbs extended and internally rotated is preferable. The typical frog-leg positioning would preclude imaging most of the femur and hindlimb muscles on many scanners, and increase imaging time due to the amount of oversampling that would be required. The lumbar plexus is a network of nerves that exit the lumbar spine bilaterally from L4 and innervate the hindlimbs. When imaging the lumbar plexus, it may be necessary to image down through the femurs, so positioning the hindlimbs extended and internally rotated is preferable. The typical frog-leg positioning would preclude imaging most of the femur and hindlimb muscles on many scanners, and increase imaging time due to the amount of oversampling that would be required.