In the YouTube video “Lumbar spine MRI scan, protocols, positioning and planning,” the meticulous process of preparing a patient for a lumbar spine MRI scan and spinal MRI scan is thoroughly explained. It entails carefully positioning the patient above the iliac crest and entering details like weight into the system to calculate the specific absorption rate accurately.
Hospital and radiologist protocols guide the selection of three sagittal and two axial sequences for the scan.
The planning of the first sagittal sequence involves using a three-plane localizer to cover the sacrum inferiorly and T12 superiorly while reducing artifacts with a saturation band. Subsequent sagittal sequences are meticulously planned to capture intervertebral discs accurately, ensuring minimal overlap and crosstalk artifact. The presenter emphasizes the importance of covering each joint space with a group of five slices for comprehensive imaging.
Transitioning to the diagnostic value of MRI sequences, the T2 sagittal image aids in identifying the spinal cord and surrounding cerebrospinal fluid, crucial for diagnosis. The T2 Sagittal TEAR sequence is highlighted for its utility in diagnosing infections, fractures, and bony metastasis. Additionally, T2 axial multi-slice multi-angle images are instrumental in diagnosing impingement of the spinal canal due to prolapsed intervertebral discs. The discussion concludes with insights into the diagnostic significance of T1 multi-slice images, essential for various lumbar spine conditions.
This section of the video provides invaluable insights into the intricate process and diagnostic capabilities of lumbar spine MRI scans, enhancing understanding and appreciation of the procedure’s clinical utility.