The definitive imaging test to order when a patient has back pain with neurological deficits is:

The definitive imaging test to order when a patient has back pain with neurological deficits is:

• A. MRI
• B. CT Without Contrast
• C. X-Ray
• D. Ultrasound

Answer: (A)

When back pain is accompanied by neurological deficits, the priority is to visualize the spinal cord, nerve roots, and surrounding soft tissues to identify compression or injury. MRI does this best because it provides superior soft-tissue contrast, allowing clear images of the spinal cord, discs, ligaments, and any mass, edema, or inflammation. It can detect disc herniation compressing a nerve root, myelopathy, epidural hematoma, tumors, or infection—findings that often explain neurologic symptoms and directly influence treatment decisions, including urgent surgical intervention if needed. MRI also avoids ionizing radiation. Other options have limitations: CT without contrast excels at bone detail and acute fractures but has poorer soft-tissue contrast and is less reliable for disc herniation and spinal cord pathology. X-ray is quick and good for alignment or obvious fractures but misses most soft-tissue causes of neurologic symptoms. Ultrasound isn’t useful for imaging the spine’s internal structures. If feasible, MRI remains the preferred initial test for back pain with neurologic deficits.

When back pain is accompanied by neurological deficits, the priority is to visualize the spinal cord, nerve roots, and surrounding soft tissues to identify compression or injury. MRI does this best because it provides superior soft-tissue contrast, allowing clear images of the spinal cord, discs, ligaments, and any mass, edema, or inflammation. It can detect disc herniation compressing a nerve root, myelopathy, epidural hematoma, tumors, or infection—findings that often explain neurologic symptoms and directly influence treatment decisions, including urgent surgical intervention if needed. MRI also avoids ionizing radiation.

Other options have limitations: CT without contrast excels at bone detail and acute fractures but has poorer soft-tissue contrast and is less reliable for disc herniation and spinal cord pathology. X-ray is quick and good for alignment or obvious fractures but misses most soft-tissue causes of neurologic symptoms. Ultrasound isn’t useful for imaging the spine’s internal structures. If feasible, MRI remains the preferred initial test for back pain with neurologic deficits.