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CT Angiography of the Chest, Abdomen, and Pelvis Vessels With Intravenous Contrast

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

Uses CT scans and intravenous contrast to examine blood vessels and organs in the chest, abdomen, and pelvis.

Quick summary

["This CT scan uses intravenous contrast to evaluate blood vessels and organs in the chest, abdomen, and pelvis."]

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

Key facts at a glance

LOINC
86983-4
Short code
CTA Chest+Abd+Pelv ves W contr IV
Synonyms
CTA Chest+Abd+Pelv ves W contr IV
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, is a special CT scan that uses intravenous contrast to create detailed images of blood vessels. It can also show structures such as the lungs, abdominal organs, and pelvic organs.

Why might I need this test?

Your clinician may order this test to investigate narrowed or blocked blood vessels, aneurysms, blood clots, abnormal bleeding, or problems involving organs in the chest, abdomen, or pelvis. It may also be used to evaluate certain tumors, infections, stones, or injuries.

How is the test performed?

You will lie on a CT table while an X-ray machine takes images from different angles. Intravenous contrast is usually given through a vein in your arm, and the scan is quick, although the complete examination may take somewhat longer.

How do I prepare for the test?

Follow your appointment instructions and tell the imaging team about any contrast allergy, kidney disease, pregnancy possibility, or medicines you take. You may be asked to avoid eating or drinking for a short time and to arrive with IV access already in place.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

The scan may identify narrowed or blocked vessels, aneurysms, clots, abnormal bleeding, organ injuries, fluid collections, stones, or suspicious masses. The radiologist interprets the images in the context of your symptoms and other tests, and your ordering clinician explains the findings and next steps.

Short name

CT Angiography, Chest/Abdomen/Pelvis

Frequently asked questions

Is CT angiography the same as a routine CT scan?
It uses the same basic CT technology, but intravenous contrast and timing of the images emphasize the blood vessels.
Will I need an IV line?
Usually. Because this version of the test includes intravenous contrast, contrast is commonly given through a vein in your arm.
Are there risks from the contrast?
Most people tolerate it well, but allergic-like reactions and kidney-related problems can occasionally occur. Tell the imaging team about prior contrast reactions, kidney disease, and any pregnancy possibility before the scan.
  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