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library:thoracolumbar_spine [2026/06/10 19:03] – scottlibrary:thoracolumbar_spine [2026/06/10 20:54] (current) – [Dorsal Plane] scott
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 Much like all sagittal planning in the spine, **be sure to use and ODD number of slices**. One important consideration for separate sagittal acquisitions is that it is necessary to ensure overlap between the two acquisitions, and accurate counting of the vertebrae. A relatively reliable anatomic marker for ensuring overlap is the mesenteric arteries coming off from the aorta. If they are present on both Lumbar and Thoracic series, then overlap is guaranteed. It is important to note two things about using the mesenteric vessels as a landmark: Much like all sagittal planning in the spine, **be sure to use and ODD number of slices**. One important consideration for separate sagittal acquisitions is that it is necessary to ensure overlap between the two acquisitions, and accurate counting of the vertebrae. A relatively reliable anatomic marker for ensuring overlap is the mesenteric arteries coming off from the aorta. If they are present on both Lumbar and Thoracic series, then overlap is guaranteed. It is important to note two things about using the mesenteric vessels as a landmark:
  
-The vessels may not be on the mid sagittal slice, but rather a parasagittal image, as shown below. The mesenteric arteries are circled in red. +  * **The vessels may not be on the mid sagittal slice**, but rather a parasagittal image, as shown below. The mesenteric arteries are circled in red. 
- +  * **The vessels are not always located in the same place**; be sure to communicate with the clinician which disc or vertebrae the vessels are under
-The vessels are not always located in the same place; be sure to communicate with the clinician which disc or vertebrae the vessels are under +
  
 {{:library:mesentericsaglumbar.png?600|}}  {{:library:mesentericsagthoracic.png?600|}} {{:library:mesentericsaglumbar.png?600|}}  {{:library:mesentericsagthoracic.png?600|}}
  
-====Sagittal Plane====+====Sagittal Plane Upper and Lower====
  
-On a dorsal image, plan the slices parallel with the spinal cord, with the slices extending at least out to the transverse processes of the vertebrae. See above for the different FOV options for Separate or Whole Spine imaging.+On a dorsal image, plan the slices parallel with the spinal cord, with the slice coverage extending at least out to the transverse processes of the vertebrae. See above for the different FOV options for Separate or Whole Spine imaging.
  
 {{:library:lspinesagplan.png?600|}}  {{:library:lumbarmidsaggood.png?600|}} {{:library:lspinesagplan.png?600|}}  {{:library:lumbarmidsaggood.png?600|}}
 +
 +{{:library:sagsliceplanstir.png?600|}}  {{:library:sagt2uppernorm.png?600|}}
  
 ====Axial Plane==== ====Axial Plane====
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 ====Dorsal Plane==== ====Dorsal Plane====
  
-On a mid sagittal image, plan the slices parallel with the spinal cord. Slices should extend from the aorta dorsally up to the spinous process of the vertebrae. Where there is noted pathology, adjust the angle of the slices a bit for the best visualization.+On a mid sagittal image, plan the slices parallel with the spinal cord. Slices should extend from the aorta dorsally up to the spinous process of the vertebrae. Where there is noted pathology, adjust the angle of the slices a bit for the best visualization. On thoracic spine dorsal imaging, the angle of the slices may be straight parallel to the body, or adjusted to emphasize pathology; be sure to clarify with the clinician.
  
 {{:library:lspinedorplan.png?600|}}  {{:library:lspinedornormal.png?600|}} {{:library:lspinedorplan.png?600|}}  {{:library:lspinedornormal.png?600|}}
 +
 +{{:library:dorplanthoracic.png?600|}}  {{:library:dorthoracicnorm.png?600|}}
  
 ====Tips and Tricks==== ====Tips and Tricks====