Sonographic Assessment of Human Lumbar Intervertebral Disks: A Cadaveric Study
| Autor: | Matthew Ockendon, Radhesh Lalam, Birender Balain, Victor N. Cassar-Pullicino, Naomi Winn |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Shear wave elastography
Radiological and Ultrasound Technology medicine.diagnostic_test business.industry Magnetic resonance imaging 030218 nuclear medicine & medical imaging 03 medical and health sciences Intervertebral disk 0302 clinical medicine Lumbar medicine Radiology Nuclear Medicine and imaging Cadaveric spasm business Nuclear medicine 030217 neurology & neurosurgery |
| Zdroj: | Journal of Diagnostic Medical Sonography. 37:427-439 |
| ISSN: | 1552-5430 8756-4793 |
| Popis: | Objectives: The intervertebral disk has traditionally been imaged by magnetic resonance imaging (MRI); however, advances in sonography mean it can now be visualized with this modality. The objectives of this human cadaveric study were to visualize the internal structure of the lumbar intervertebral disks and map any defects. Shear wave sonography was explored as a method for assessing the disks. Materials and Methods: In a human cadaver, L4-L5 and L5-S1 disks were imaged with sonography through the anterior abdominal wall and directly through the anterior longitudinal ligament. Gray-scale images and shear wave elastography velocities were obtained. An MRI was performed for image comparison. Results: Defects in the disks were clearly seen with sonography, imaging through the anterior abdominal wall and also directly through the anterior longitudinal ligament. The defects identified on sonography were less well visualized on MRI. Shear wave velocities could only be obtained from the anterior aspect of the disk and were unreliable, primarily owing to the stiffness of the tissues. Conclusion: Sonography can provide an accurate map of defects within the disk, corresponding with MRI. Shear wave elastography should be used with caution in the human cadaveric intervertebral disk, acknowledging the many confounding factors influencing the measurements. |
| Databáze: | OpenAIRE |
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