Soft-tissue anatomy within the spinal canal as seen on computed tomography

Area of Science:

• Radiology
• Anatomy
• Neurosurgery

Background:

• Accurate visualization of spinal soft tissues is crucial for diagnosing neurological conditions.
• Computed tomography (CT) offers cross-sectional imaging capabilities that may enhance soft tissue delineation.

Purpose of the Study:

• To evaluate the capability of CT in demonstrating various vascular, ligamentous, and neural structures within the spinal canal.
• To assess the diagnostic value of CT for spinal pathologies affecting the cord, disk, and epidural space.

Main Methods:

• CT scans were performed on 50 patients and 5 cadavers.
• Iodinated contrast medium was utilized in some patients, injected into ascending lumbar veins, nucleus pulposus, or theca.
• Identification of visualized soft tissues was confirmed through cadaver dissections.

Main Results:

• CT successfully demonstrated key spinal structures including the spinal cord, nerves, root sheaths, retrovertebral plexus, epidural and basivertebral veins, posterior longitudinal ligament, ligamentum flavum, intervertebral disks, and vertebral arteries.
• Contrast enhancement improved the visualization of specific vascular and neural elements.

Conclusions:

• CT imaging is effective in visualizing a wide range of spinal soft tissues.
• CT demonstrates significant diagnostic value for diseases affecting the spinal cord, intervertebral disks, and epidural space.