MRI: General FAQs:what to expect

Unlike X-rays or CT scans, MRI uses strong magnetic fields and radiofrequency energy rather than ionising radiation to produce images. It can provide excellent soft-tissue detail, but the images still need expert interpretation and do not always give a complete diagnosis on their own.

MRIs are particularly effective for examining soft tissues and organs, such as the brain, heart, spinal cord, and muscles. Most conditions range from cancer, neurological disorders, to heart diseases and a lot more.

While each imaging modality has strengths and weaknesses, MRI is especially known for its detailed images of soft tissues, which can reveal abnormalities or conditions that might not appear on other scans.

Yes, both MRI and CT have their unique strengths, so doctors sometimes use them together for a more complete diagnosis of some conditions. For instance, MRI excels at providing soft tissue detail, while CT scans are faster and more suitable for imaging bone or trauma related conditions (like bony fractures).

Anyone needing a closer look at their internal organs or tissues—especially when other scans haven’t provided sufficient information—can benefit from an MRI. It is an indispensable tool in modern medicine for diagnosing various conditions.

No, you should continue your regular medications, including prescribed painkillers, as it’s important to be comfortable during the scan. If you’re unsure, consult your doctor to confirm if any medications need to be adjusted.

When you arrive, you’ll complete a short questionnaire about your health and relevant medical and surgical history to ensure the scan can proceed safely. You’ll also be asked to provide a signed consent for the scan.

No, an MRI is expected to be painless and non-invasive. However, you might feel discomfort from lying still for a long time, but the scan itself should not cause you pain.

Yes, the MRI machine can be quite loud, making knocking or buzzing sounds. This noise is normal and results from the switching of electric currents within the scanner coils. Usually, earplugs or headphones are provided to reduce the effect, and you may even be able to listen to music.

After an MRI without contrast or sedation, most people can return to normal activities immediately. If you received sedation, you will need the center's recovery and driving instructions and usually an adult escort. If you received contrast, follow the advice given for reactions or injection-site problems.

Usually, you can eat and drink normally before an MRI, unless instructed otherwise (such as for specific abdominal scans). In all, practices may vary, so don’t find it surprising if fasting is recommended, although drinking water is generally fine.

You don’t need to bring much. Any personal belongings, like jewelry and watches, can be stored in a locker provided by the facility. If you had a previous study that may be relevant to your current study done in another MRI Center, a copy of your reports, films and relevant data will help.

You’ll be given scrub pants and a gown to wear during the MRI exam, so you don’t need to worry about your clothing.

You’ll need to remove all metal items, such as jewelry, watches, and hairpins, as metal can interfere with the MRI machine. If you have piercings, hearing aids, or dentures, those will also need to be removed, and you’ll be given a secure place to store them during the scan.

An MRI machine is typically longer and more cylindrical, while a CT machine is shorter and doughnut-shaped. MRI uses a strong magnetic field and radio waves to create images, whereas CT scans rely solely on ionizing radiation.

MRI scans typically last between 15 and 90 minutes, depending on the area being examined. You’ll need to stay as still as possible for clear images, though you can move slightly between image sequences, which only last a few minutes each.

You’ll be taken to the MRI room, where you’ll lie down on a table that slides into a long tube-shaped machine. Some examinations require specific body areas to be covered with MRI coils for the highest quality images. Try to lie as still as possible to ensure clear images.

Yes, you can communicate through an intercom system which is usually available. If you feel uncomfortable, you can speak up in between the scans, and the Radiographer should respond right away. Ensure you confirm this with your Radiographer before the MRI is started. Some centers also have what is known as a squeeze ball, which when squeezed, alerts the Radiographer that you will be needing them to pause and attend to your concerns at any point during your scan.

This fear is known as Claustrophobia. It is fairly common and normal, so don’t beat yourself over it. The experience of claustrophobia is largely traceable to the machine’s design.

Due to this, many centers provide a buzzer for you to hold, allowing you to alert the staff if you feel uncomfortable. Proper communication with the attending Radiographer, having a relative present with you during your scan or using alternative machine options, like a Wider-bore or Open-bore MRI, can also help.

Yes and No- let us explain!

Actually, MRI scans are generally considered safe. It does not use Radiation which is popularly known to have a potential to damage tissues. In this context, MRI is considered safe. However, like every other thing, this safety is not absolute. MRI can be associated with burns, projectile effects, damage and other harms if safety guidelines are not followed.

As a rule of thumb, all persons undergoing an MRI, or having to enter an MRI Room must be screened for safety. The MRI Radiographers, Radiologists, and attending team of professionals are expected to be trained in this aspect.

You must complete MRI safety screening before entering the scanner room. Tell the team about every operation, implant, device, metal fragment, medication patch, or previous metal injury. If an implant's exact make and model are unknown, the team may need records or X-rays before deciding whether and how it can be scanned.

Yes, sedation is an option if you’re anxious or claustrophobic. However, you’ll need to arrange this with your doctor ahead of time and have someone accompany you afterward, as you may need assistance due to the effects of sedation.

Tell the team if you are pregnant or might be. Noncontrast MRI may be performed during pregnancy when the expected medical benefit justifies it; there is no blanket first-trimester prohibition. Gadolinium is not routinely administered during pregnancy. Current guidance generally allows breastfeeding to continue after gadolinium, although you can discuss any concerns with the radiologist.

• RadiologyInfo: MRI of the body
• ACR Manual on MR Safety
• FDA: MRI benefits and risks

MRI is a relatively safe and rapidly explored imaging technique for diagnosis of various disease conditions. By following our guidelines, preparing properly, and communicating openly with your radiographer, you can ensure a comfortable, stress-free experience.

If you have any concerns, feel free to discuss them with your healthcare provider or managing physician to ensure you’re well-informed for your scan.