Question

which diagnostic tool is used to measure spinal canal space in cervical myelopathy? ○ mri ○ ultrasound ○ x - ray ○ ct scan

Explanation:

X-ray is the standard initial diagnostic tool used to measure spinal canal space (via parameters like the sagittal diameter) in cervical myelopathy, as it provides clear visualization of bony spinal structures to assess stenosis. MRI and CT are used for more detailed soft tissue and bony evaluation, while ultrasound is not suitable for this purpose.

Answer:

X-ray