CT Angiography of the Lower-Extremity Peripheral Vessels, 3D Reconstruction (Deprecated Entry)
Uses contrast-enhanced CT images to examine arteries supplying the legs and create 3D views of blood vessels.
["This imaging test can help identify narrowing, blockage, aneurysm, or other problems in the leg arteries."]
Key facts at a glance
- LOINC
- 59255-0
- Short code
- Deprecated Cht>Ht.LA+Pul v CT.Angio +3DR
- Synonyms
- Deprecated Cht>Ht.LA+Pul v CT.Angio +3DR
- 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-angio
- 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?
CT angiography, or CTA, uses intravenous contrast and CT scans to create detailed pictures of the arteries supplying the lower legs. A 3D reconstruction can help show the location and extent of blood-vessel abnormalities.
Why might I need this test?
Your clinician may order CTA if you have symptoms such as leg pain while walking, a nonhealing wound, or a cold or discolored foot. It may also be used to evaluate suspected peripheral artery disease, aneurysms, blood clots, or problems after a vascular procedure.
How is the test performed?
You lie on a CT table while an intravenous line is placed and contrast is injected. The scanner takes rapid images as the contrast travels through your blood vessels, and the images are reviewed to create two-dimensional and 3D views.
How do I prepare for the test?
Follow your imaging center's instructions, which may include avoiding food or drinks for several hours beforehand. Tell the care team about kidney disease, prior contrast reactions, allergies, and pregnancy or breastfeeding, because these factors may affect the procedure or contrast use.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal findings may indicate narrowing or blockage of a leg artery, an aneurysm, blood clot, or another blood-vessel abnormality. These findings can help explain symptoms and guide treatment, medication, or vascular procedures. The final interpretation should be made by a radiologist in the context of your symptoms and examination.
Short name
Lower-Extremity CT Angiography
Frequently asked questions
Is CT angiography the same as a routine CT scan?
Is the 3D reconstruction an additional radiation exposure?
Why is this test marked as deprecated?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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