MRI LS spine means a magnetic resonance imaging scan of the lumbosacral (lower) spine — the lumbar vertebrae and sacrum. It noninvasively images discs, spinal cord, nerve roots, bones and soft tissues to detect disc herniation, nerve compression, degeneration, infection, fractures, tumors, or congenital problems. It uses magnetic fields and radio waves (no ionizing radiation); metal implants or pacemakers may require precautions.

An MRI of the lumbar (LS) spine typically costs: in the United States about $400–$3,000+ without insurance (often $1,000–$2,000 average); in the United Kingdom it's free via public health services but private scans run roughly £200–£800; in India costs usually range ₹2,000–₹10,000. Using contrast or high-end centers increases the price; insurance or public coverage may reduce cost.

An LS spine MRI is usually painless because it uses magnetic fields rather than X‑rays. Any discomfort typically comes from lying still on a firm table, preexisting back pain, tight or noisy scanner surroundings, or a brief sting if contrast is given. Technologists can provide padding, ear protection, breaks, or mild sedation for claustrophobic or particularly uncomfortable patients.

An LS spine MRI with whole spine is a magnetic resonance scan that images the lumbosacral (lower back) region plus screening sequences through the entire spinal column. It evaluates discs, vertebrae, nerve roots, spinal cord, and detects conditions like disc herniation, stenosis, infection, metastases, or demyelination. The noninvasive test uses magnets and radio waves and sometimes IV contrast to better characterize abnormalities.

A lumbosacral (LS) MRI scan typically takes about 20–45 minutes for the actual imaging. If contrast (gadolinium) is used, it can take 30–60 minutes. Allow an additional 15–30 minutes for registration, changing and safety screening. Total time varies by facility, chosen sequences and patient factors (movement, claustrophobia, need for extra images).

LS spine problems affect the lumbosacral (lower back) region, commonly from disc degeneration, herniation, spondylolisthesis or spinal stenosis. Symptoms include lower back pain, sciatica, leg numbness and weakness. Diagnosis uses clinical exam and imaging (X‑ray, MRI). Most cases improve with activity modification, physiotherapy, pain medicines and epidural injections; surgery is for severe or progressive neurologic deficits.