What is a Knee MRI?
A knee MRI (magnetic resonance imaging) is a painless radiology exam. This is performed to examine the knee and its surrounding areas in a non-invasive manner. In this scan, multiple images of the bones and soft tissues of the knee are generated using radio waves and a strong magnetic field.
The knee MRI helps doctors in examining pain in the knee area, as well as detecting damage, infections, tumors, and swelling around the knee.
The MRI of the knee may be done with or without the use of a contrast material (dye) that is either taken by mouth (orally) or injected into the veins. When the contrast material is used, the organs are seen more clearly in the scanned images.
Explore This Article:
|1||Who Should Get a Knee MRI?|
|2||How Is a Knee MRI Performed?|
|3||How Long Does a Knee MRI Take?|
|4||Is Radiation Involved in a Knee MRI?|
|5||Are There Any Risks in Taking a Knee MRI?|
|6||When Will I Receive My Results?|
|7||How Should I Prepare for a Knee MRI?|
Who Should Get a Knee MRI?
Your doctor may recommend a knee MRI to diagnose and treat many conditions, including:
- Bone fractures
- Arthritis (causes pain, swelling, weakness, and stiffness in joints)
- Bursitis (causes fluid buildup in the knee)
- Dislocations (bones on the knee or around it is out of position due to an injury)
- Damaged cartilage
- Torn ligaments or tendons
- Decreased motion of the knee joint
- Infection (such as osteomyelitis)
- Tumors involving joints and bones
- Problems with implanted medical devices (such as artificial limbs or metallic joint prostheses)
How Is a Knee MRI Performed?
- Before starting the MRI of the knee, you will have to remove all the metal objects on your body, including eyeglasses, jewelry, hairpins, and dentures.
- A technologist will ask you to lie still on the MRI scanner table, which will move slowly through a doughnut-shaped MRI machine.
- Once you are inside the MRI machine, multiple images of your knee will be taken that will be displayed on a monitor.
- During the scan, the technologist will ask you to hold your breath for 10 to 12 seconds at certain points. Make sure you don’t move during the scan as any movement can blur the images.
In case, your doctor has asked you to take a knee MRI with contrast, then a contrast dye will be injected into your vein shortly before the scan begins.
How Long Does a Knee MRI Take?
An MRI of the knee is usually completed between 30 to 60 minutes.
Is Radiation Involved in a Knee MRI?
No. An MRI is a painless imaging test that doesn’t use radiation.
Are There Any Risks in Taking a Knee MRI?
- People who have implants such as cardiac pacemaker, coronary stent, orthopedic rods and plates, which contain metal, may face certain risks. The magnets used in an MRI can make implanted pins or screws move in the body or cause problems with pacemakers.
- Some people might also have an allergic reaction to the contrast dye used in an MRI.
When Will I Receive My Results?
Once the knee MRI is completed, you will receive your results within 3-5 business days in your LabFinder portal.
How Should I Prepare for a Knee MRI?
Please refer to the simple preparation guidelines given below or consult with your doctor or radiology center where you are being treated. Do not forget to bring your LabFinder Order and Insurance Card to your appointment.