A standard shoulder MRI takes 20 to 45 minutes of actual scanning time. Your total time at the facility will be longer, typically 60 to 90 minutes, once you factor in check-in, changing, and getting positioned on the table. If your scan involves a contrast injection or you need sedation, expect to be there even longer.
Time on the Table
The scanner captures your shoulder in multiple rounds, called sequences. Each sequence highlights different tissue types: cartilage, tendons, fluid, bone. A standard shoulder protocol runs about 10 to 11 minutes of pure scanning time using conventional settings, though the full exam with repositioning and brief pauses between sequences usually stretches to 20 to 45 minutes total.
Newer facilities are cutting this down significantly. Protocols that pair faster imaging techniques with AI-assisted image reconstruction can finish a complete shoulder scan in about 5 minutes, roughly half the time of a standard protocol, without sacrificing image quality. These accelerated protocols are available at both 1.5T and 3T machines (the numbers refer to magnet strength). Not every imaging center uses them yet, but they’re becoming more common, so it’s worth asking when you schedule.
What Adds Time Before and After
Plan to arrive 20 to 30 minutes before your scheduled scan. You’ll fill out a safety questionnaire asking about metal implants, pacemakers, surgical hardware, and similar concerns. Then you’ll change into a gown and remove all jewelry, watches, and anything metal. A technologist will position you on the table, usually lying on your back with your arm at your side, and may place a small coil (a receiver shaped like a pad) over your shoulder to sharpen the images.
After the scan, you can leave almost immediately if no sedation was involved. Getting changed and checking out adds another 5 to 10 minutes. All told, a straightforward shoulder MRI appointment runs about an hour from the moment you walk in to the moment you walk out.
MRI With Contrast or Arthrogram
If your doctor orders an MRI arthrogram, the appointment takes longer. Before the scan, a radiologist injects a contrast solution directly into your shoulder joint. This injection is done under imaging guidance (usually fluoroscopy or ultrasound) and takes about 10 to 15 minutes including prep. The MRI scan itself then needs to start promptly, ideally within 90 minutes of the injection, because the contrast gradually disperses and image quality drops over time. Peak image quality occurs in roughly the first 20 to 45 minutes after injection.
An arthrogram is typically ordered when your doctor suspects a labral tear, a partial rotator cuff tear, or damage to the joint capsule. The contrast fills the joint space and outlines structures that can be hard to see on a standard scan. Expect the full appointment, from check-in through scanning, to run 90 minutes to two hours.
If You Need Sedation
Sedation is sometimes used for patients who experience severe claustrophobia or who cannot hold still long enough for clear images. If you receive an oral sedative, it typically takes effect within 30 to 60 minutes, so you’ll take it before you’re positioned in the scanner. IV sedation works faster, with onset around 8 to 9 minutes on average, but requires monitoring afterward.
The recovery period is the real time commitment. After IV sedation, expect to stay at the facility for about 40 minutes in a recovery area while staff monitor you. Side effects like dizziness and grogginess can linger for several hours after you leave. You’ll need someone to drive you home, and most facilities recommend avoiding important decisions or physical activity for the rest of the day. A sedated shoulder MRI appointment can easily run two to three hours total.
Open vs. Closed MRI Machines
Closed-bore machines (the traditional tunnel design) produce the strongest, sharpest images and tend to run faster protocols. Open MRI machines have wider openings or are open on the sides, making them more comfortable if you’re anxious about tight spaces or if your body size makes a standard tunnel uncomfortable. The tradeoff is that open machines generally use lower-strength magnets, which means each imaging sequence takes slightly longer to achieve comparable detail. A shoulder scan on an open MRI can take anywhere from 30 to 90 minutes depending on the machine’s field strength and the protocol used.
For most shoulder problems, a closed-bore MRI provides all the detail your orthopedist needs. But if claustrophobia is a concern, an open machine or a wide-bore closed machine (which has a larger opening than older models) is a reasonable alternative. The extra time is usually 10 to 20 minutes, not a dramatic difference for most people.
How Long Results Take
The images are captured in real time, but a radiologist needs to review every sequence and write a formal report. If your scan happens on a weekday, the median turnaround for the radiologist’s report is just a few hours. Scans done over the weekend may take two to three days for a finalized report, since staffing is lighter. After the report is filed, your referring doctor still needs to review it and contact you, which can add another day or two depending on the practice.
Most patients hear back within three to five business days. If your doctor’s office has an online patient portal, the radiology report often shows up there before anyone calls you. The report will describe findings in clinical language, so don’t panic if you read unfamiliar terms. Your doctor will translate what matters for your specific situation at your follow-up.