Scan Types / MRI SACROILIAC JOINTS
MRI Sacroiliac Joint Scan
This MRI scan targets the sacroiliac (SI) joints, which connect your lower spine to your pelvis. It helps detect causes of chronic lower back pain, joint inflammation, and structural instability, especially when physical exams and X-rays are inconclusive.
What is an MRI Sacroiliac joint scan?
The sacroiliac joints are located at the base of the spine and help transfer weight between your upper body and legs. Dysfunction or inflammation in these joints can cause pain in the lower back, buttocks, and legs.
An MRI scan of the SI joints uses magnetic fields and radiofrequency pulses to produce high-resolution images of:
- The joint surfaces and ligaments
- Bone marrow changes (common in inflammatory conditions)
- Joint fluid or synovial inflammation
- Erosions and sclerosis associated with arthritis
It is particularly useful for detecting early-stage sacroiliitis or monitoring conditions like ankylosing spondylitis.
Why consider a private MRI scan of the SI joints?
Sacroiliac dysfunction can mimic sciatica or lower back pain but requires a completely different treatment approach. This MRI is often the only imaging method that can detect early inflammation of the SI joints.
Advantages of a private scan include:
- Fast appointment scheduling
- High-detail imaging ideal for rheumatologic diagnosis
- Early detection of inflammatory joint disease
- No exposure to ionising radiation
- Consultant-radiologist reporting included
Symptoms that may warrant an SI joint MRI
Consider this scan if you're experiencing:
- Deep pain in the lower back, buttocks, or hips
- Pain worsened by standing, walking, or climbing stairs
- Morning stiffness or pain that improves with movement
- Suspected autoimmune or inflammatory arthritis
- Pain after pelvic trauma or childbirth
- Unresolved back pain unresponsive to physio or rest
What can an SI joint MRI detect?
An MRI of the sacroiliac joints can reveal:
- Sacroiliitis (joint inflammation)
- Erosions and bony changes in early spondyloarthritis
- Joint space narrowing and sclerosis
- Bone marrow edema (inflammation within the joint)
- Ankylosing spondylitis progression
- Synovial inflammation or joint effusion
- Ligamentous injuries or asymmetry
Preparing for your sacroiliac MRI
Simple preparation steps:
- Dress in comfortable clothing without metal fastenings
- Remove jewelry, belts, and underwire bras
- No restrictions on eating, drinking, or medication
- Previous imaging or rheumatology referrals are welcome
Please notify the team if you have:
- Metallic implants, pins, or spinal rods
- Pacemaker or defibrillator
- Pregnancy
- Claustrophobia or anxiety (optional sedation available)
How it works
Smarter Scanning. Proactive Health. Peace of Mind.
Choose
Pick a scan or a program. No referral required.
Book
Select a time online - same‑day availability.
Scan
Be seen by specialists in our Bluewater clinic.
Results
Consultant‑led report within 3 working days, accessible online.
Pricing for a private SI joint MRI scan
Clear and competitive pricing for all types
A detailed consultant radiologist report will be ready within 3 working days.
Standard MRI (MSK)
Scan of both sacroiliac joints
£295
With Contrast
Includes contrast (Gadolinium) if needed
£495
Get clarity. Get control.
Cut out long NHS queues, avoid opaque private quotes, and step into a single-visit, consultant-led experience.
FAQs
Got a question? Check below to find the answer.
We’re an independent diagnostic centre in Dartford offering same-day private MRI with UK-consultant reporting and transparent self-pay pricing.
No-self-referral is welcome. If you already have a referral letter, upload it at checkout.
Prices start at £150 for single-area Off-Peak scans. Your fee covers the scan, double-reading, and unlimited portal access.
Many insurers reimburse private MRI. We provide the codes and receipts you need to claim.
Call 01322 - MRI - NOW, start a live chat, or email hello@myscanhub.co.uk.