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CT Scan of the Right Knee With Contrast

Published: August 9, 2026Updated: August 16, 2026

A CT scan uses X-rays to create detailed images of the right knee. Contrast may be used to improve visualization of selected tissues.

Quick summary

["This imaging test helps evaluate the bones and surrounding tissues of the right knee."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
69114-7
Short code
CT Knee-R W contr IS
Synonyms
CT Knee-R W contr IS
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ct
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

A right-knee CT scan is an X-ray-based imaging test that creates cross-sectional pictures of the knee joint. It may be performed with contrast to provide clearer images of certain tissues.

Why might I need this test?

Your clinician may order this test to evaluate persistent knee pain, injury, suspected fractures, joint abnormalities, infection, a mass, or the result of another imaging study.

How is the test performed?

You will lie on a table while a CT scanner rotates around the knee and creates images. If contrast is used, it is usually given through a vein, although some knee protocols use contrast injected into the joint.

How do I prepare for the test?

Follow the imaging center's instructions, as fasting or other preparation may depend on the contrast protocol. Tell the staff about contrast allergies, kidney disease, pregnancy, or possible pregnancy, and remove jewelry or other metal near the knee.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

The scan may identify fractures, joint alignment problems, bone lesions, cartilage changes, or soft-tissue swelling. It can also help evaluate infection, inflammation, or a mass when other imaging is inconclusive. A radiologist interprets the images and sends the report to your clinician.

Short name

Right Knee CT With Contrast

Frequently asked questions

Is a CT scan of the knee the same as an X-ray?
No. A standard X-ray creates flat images, while CT creates multiple cross-sectional images that show the knee and nearby tissues in greater detail.
What is contrast in this test?
Contrast is a material that helps certain tissues appear clearer on the images. The exact protocol determines whether it is given through a vein or injected into the joint.
Does a CT scan diagnose the cause of knee pain?
It can reveal structural problems that may contribute to knee pain, but the findings must be interpreted with your symptoms, examination, and other tests by your clinician.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy