MRI Scan Guide

Shoulder MRI: What It Shows, How It Works, and What to Expect

Overview

What is a shoulder MRI?

A shoulder MRI provides highly detailed images of the rotator cuff, labrum, cartilage, tendons, ligaments, and bones of the shoulder joint. It is the most reliable non-invasive method for diagnosing shoulder injuries.

Shoulder MRI is commonly ordered for persistent pain, weakness, limited range of motion, and suspected rotator cuff or labral tears. It is also used to evaluate impingement, instability, and arthritis, and to plan or assess the results of surgical repair.

The scan is painless, uses no radiation, and requires no recovery time.

The procedure

How a shoulder MRI works

You lie on your back on the scanner table with your arm at your side or in a specific position depending on the clinical question. A surface coil is placed over the shoulder to capture the signal. The table slides into the scanner, and multiple image sequences are acquired over approximately 30 to 45 minutes. Each sequence is optimized to show different tissues such as tendons, cartilage, or fluid.

Diagnostic value

What a shoulder MRI detects

Rotator cuff tears (partial or full-thickness)
Labral tears (SLAP, Bankart)
Biceps tendon pathology
Shoulder impingement
Frozen shoulder (adhesive capsulitis)
Shoulder instability and dislocations
Arthritis and bone spurs
Fractures not visible on X-ray

Preparation

How to prepare for a shoulder MRI

MRI vs ultrasound for shoulder pain

Both MRI and ultrasound can evaluate the rotator cuff. Ultrasound is faster and less expensive but is highly operator-dependent and limited in its ability to assess the labrum, bones, and deeper structures. MRI provides a comprehensive view of all shoulder structures and is considered the standard for pre-surgical evaluation. Your clinician will recommend the appropriate modality based on your symptoms.

Shoulder MRI with arthrogram

An MRI arthrogram involves injecting contrast directly into the shoulder joint before the scan. This distends the joint capsule, improving visualization of the labrum, ligaments, and cartilage surfaces. It is particularly useful for detecting labral tears and assessing shoulder instability. The injection is performed under fluoroscopic or ultrasound guidance before the MRI scan.

Understanding your results

Your scan results, in plain English.

Every Mira scan comes with two reports. A medical report from a radiologist for your doctor, and a miraclarity report for you. The miraclarity report explains your shoulder MRI findings in straightforward language with visual guides, severity indicators, and recommended next steps.

No jargon. No waiting for another appointment just to understand what your scan found. miraclarity is included free with every scan.

Book your scan

Where to get a shoulder MRI

Frequently asked questions

Can MRI detect a rotator cuff tear?

Yes. MRI is the gold standard for diagnosing rotator cuff tears. It can identify partial tears, full-thickness tears, and tendon retraction.

How long does a shoulder MRI take?

A typical shoulder MRI takes 30 to 45 minutes.

Will I need to raise my arm during the scan?

Usually not. For most shoulder MRI protocols, your arm rests comfortably at your side. In rare cases, specific positions may be requested.

Can a shoulder MRI show frozen shoulder?

Yes. MRI can show thickening of the joint capsule and surrounding inflammation associated with adhesive capsulitis (frozen shoulder).

Other MRI scans

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