When your doctor orders a magnetic resonance imaging (MRI) scan, one of your first questions is likely about the time commitment. Because this technology is so advanced, the time it takes can vary significantly depending on the type of scan you need. If you’re planning your day, a good rule of thumb is to expect the scan to last 15-60 minutes. However, the total appointment time — including checking in, changing clothes, and reviewing your medical history — often ranges from 1 to 2 hours.
Factors that impact the timing of your scan
Unlike an X-ray, which takes quick snapshots, an MRI exam is a more complex study that uses radio waves and a strong magnetic field to create a highly detailed image of your internal structures. Not every MRI exam is the same. Several variables can make a scan shorter or longer, ranging from the specific body part being scanned to the type of equipment being used.
The part of the body being scanned
The complexity of the area being imaged is the biggest factor in determining time. A type of MRI that looks at a small joint will be much faster than one that examines the spinal cord or brain.
Here is what you can expect for MRI scans of common body parts:
- Shoulder MRI: Average of 23 minutes
- Lumbar Spine MRI: Average of 22 minutes
- Cervical Spine MRI: Average of 23 minutes
- Thoracic Spine MRI: Average of 21 minutes
- Knee MRI: Average of 22 minutes
- Prostate MRI: Average of 35 minutes
- Hip MRI: Average of 27 minutes
- Wrist/Hand MRI: Average of 21 minutes
- Ankle MRI: Average of 22 minutes
- Foot MRI: Average of 19 minutes
How many images are captured
The number of images captured during an MRI can impact the duration of the scan. More complex conditions or those requiring detailed imaging will require additional images to provide an accurate diagnosis. For instance, if the radiologist is investigating a suspected tumor or an injury, multiple angles and sequences may be necessary.
The use of contrast material
In some cases, the radiologist will need to use a contrast material (a specialized dye) to get a clearer view of a specific organ or blood vessel. If your exam requires contrast, which can be administered via IV or as a drink, you will be asked to arrive a bit earlier to allow time for you to absorb the contrast material.
Using contrast can extend the appointment time because the technologist must take images before and after the dye is injected. Additionally, while rare, some patients experience allergic reactions or side effects like nausea or itching at the injection site. If this happens, you may need to stay slightly longer for monitoring.
How the type of MRI machine can make all the difference
The strength of an MRI machine is measured in Tesla (T), with common specifications like 1.5T and 3T. The higher the Tesla rating, the stronger the magnetic field, resulting in improved image resolution and detail.
Older 1.5T MRI machines are reliable and widely accessible, providing effective imaging for many patients. Meanwhile, modern 3T MRI machines offer enhanced capabilities, capturing intricate structures for quicker scans and potentially more accurate diagnoses. Both types play valuable roles in medical imaging.
South Jersey Radiology Associates offers machines equipped with fast scan technology that can reduce average scan times by up to 48% and add up to 20% more headroom.
| MRI Exam Type | Standard Scan Time (Minutes) | Fast Scan Time (Minutes) |
| Shoulder MRI | 23:00 | 12:00 |
| Lumbar Spine MRI | 22:00 | 12:00 |
| Cervical Spine MRI | 23:00 | 13:00 |
| Thoracic Spine MRI | 21:00 | 12:00 |
| Knee MRI | 22:00 | 13:00 |
| Prostate MRI | 35:00 | 26:00 |
| Hip MRI | 27:00 | 14:00 |
| Hand / Wrist MRI | 21:00 | 13:00 |
| Ankle MRI | 22:00 | 12:00 |
| Foot MRI | 19:00 | 11:00 |
This fast scanning not only minimizes anxiety but also lessens the likelihood of rescans. Additionally, our Wide-Bore MRI improves patient comfort, creating a more pleasant experience during your appointment.
View our available MRI appointments at a location near you today
Preparing for an MRI Scan
Before you even enter the scan room, safety protocols must be followed. Because the machine uses strong magnets, you must remove all metal objects, including jewelry, watches, and piercings. You must also inform the staff if you have any metal implants, such as a pacemaker or artificial joint, as these can interact with the magnetic field.
Typically, you can eat and drink normally before your visit, but it’s always best to confirm at the time of your MRI appointment. Additionally, you should avoid wearing makeup or deodorant, as some products contain microscopic bits of metal that can affect your imaging results. Wear metal-free, loose clothing (or change into a hospital gown) to prevent delays in getting you into the room.
Claustrophobia and anxiety
If you are claustrophobic or anxious, speak with your doctor who is referring you for the study and see if they can provide you with a mild anti-anxiety medication to help you relax. Depending on the area being imaged, this is usually permitted and makes your experience more comfortable.
It is important to inform the staff if you plan to take any medication before your appointment. Depending on what is recommended by your doctor, you may have to arrange for someone else to drive you home, which may add time to your study.
During the scan
The MRI machine uses powerful magnets and radio waves to create detailed images of your body. It is important to remember that MRI machines take images in sequences. You will likely hear loud thumping noises for several minutes, followed by a pause, and then more noise. This is normal, and the technologist will keep you informed throughout the process.
Some may be sensitive to the machine’s loud noises and to overhead lighting in the room, so let your technologist know if you have any concerns.
Strike a pose: The importance of movement control
To capture a clear image, you must lie on a table that slides into the MRI scanner and remain perfectly still. You may be asked to hold your breath for 10-20 seconds, depending on what part of your body is being imaged.
You can keep your eyes open during the scan, though some patients find that closing their eyes helps calm their nerves. If you close your eyes, though, please be sure not to fall asleep. While you sleep, your body can twitch and move. If this happens, the technologist may have to restart the sequence, which can add time to your exam. Additionally, if you sneeze or cough during a sequence, the images may come out blurry.
After the scan
After your MRI scan, you are free to leave unless you took a medication to relax that influences your motor skills, in which case you’ll need someone to drive you home. While MRI scans typically have no lasting side effects, some patients may feel fatigued or experience a light headache. If you received contrast, be aware that nausea or itching at the injection site can occur; inform your doctor if these symptoms persist.
Your MRI results will be sent to your physician, who will discuss them with you during your next follow-up appointment. If you have any concerns or new symptoms arise after the scan, don’t hesitate to reach out to your healthcare provider for further guidance.
Do I get MRI results straight away?
You will not receive immediate results, as a board-certified radiologist needs to analyze the images and prepare a report for your doctor. This process typically takes about 7-10 days, though urgent findings are communicated more quickly. While the wait may seem lengthy, MRIs are among the most precise diagnostic tools available.
Your medical team is important in understanding your MRI results. After the radiologist’s assessment, your doctor will review the findings with you and help determine the next steps.
Understanding your MRI experience
The duration and process of your MRI scan can vary, but your imaging team can alleviate any concerns you may have. With a little preparation, you can ensure a smooth experience and make the most of this advanced imaging technology.
- An MRI scan typically lasts between 15 and 60 minutes, but you should allocate about 1 to 2 hours for the entire appointment, including check-in and preparation.
- The complexity of the body part being scanned, the potential use of contrast material, and your own anxiety levels can influence the overall timing of your MRI.
- Arrive metal-free, wear loose clothing, and be aware of any sedation options.
At SJRA, we do our very best to streamline the appointment process to get you in and out and back to your normal routine as soon as possible. Our team of medical professionals is ready and waiting to help start that process today! Set up your MRI appointment with SJRA at any of the following locations:
- Marlton (Greentree) Office – Marlton, NJ
- Medford Office – Medford, NJ
- Moorestown Office – Moorestown, NJ
- Mount Laurel Office – Mount Laurel, NJ
- Route 73 (Voorhees) Office – Voorhees Township, NJ
- Sewell (Washington Twp) Office – Sewell, NJ
- Turnersville Office – Turnersville, NJ
- Voorhees (Carnie Blvd) Office – Voorhees Township, NJ
- West Deptford Office – West Deptford, NJ
- Willingboro Office – Willingboro, NJ
Learn more about the board-certified sub-specialized radiologists who read and interpret studies at SJRA here.
Frequently Asked Questions
While the appointment may last up to 2 hours, the time a patient spends physically inside the machine typically ranges from 15 to 60 minutes, depending on the number of images required.
Generally, scans of the brain and spine take the longest, potentially lasting up to 2 hours depending on the complexity of the issue.
You typically need to remove any clothing with metal, such as zippers or buttons, for an MRI. It’s advisable to wear loose, comfortable clothes. A hospital gown may be provided, and you can usually keep your underwear and socks on, unless there’s a concern about metal microfibers. Women can wear a non-metal bra during the scan.
It’s natural to feel anxious about an MRI, and while this can sometimes lead to a longer scan time, your comfort is the priority. If you feel overwhelmed, using the panic button is perfectly okay, and the staff will be there to support you throughout the process.
You can schedule your MRI appointment with SJRA at any of the following locations:
• Marlton (Greentree) Office – Marlton, NJ
• Medford Office – Medford, NJ
• Moorestown Office – Moorestown, NJ
• Mount Laurel Office – Mount Laurel, NJ
• Route 73 (Voorhees) Office – Voorhees Township, NJ
• Sewell (Washington Twp) Office – Sewell, NJ
• Turnersville Office – Turnersville, NJ
• Voorhees (Carnie Blvd) Office – Voorhees Township, NJ
• West Deptford Office – West Deptford, NJ
• Willingboro Office – Willingboro, NJ
