Abdominal Aorta for Aneurysm (AAA)

What is an Abdominal Aorta (AAA) Ultrasound Scan?

An Abdominal Aorta Ultrasound Scan is a non-invasive imaging test that uses high-frequency sound waves to visualise the abdominal aorta, the main blood vessel supplying blood from the heart to the lower body. It does not use radiation and is considered very safe.

The scan measures the diameter of the abdominal aorta, allowing clinicians to identify whether an aneurysm (abnormal widening of the artery) is present. An aneurysm may enlarge slowly over time and often causes no symptoms, making screening particularly important.

AAA ultrasound is the gold-standard screening test for abdominal aortic aneurysms and is widely used in preventative cardiovascular care.

Why do I need an AAA Ultrasound Scan?

An AAA ultrasound scan is recommended for individuals at increased risk of developing an abdominal aortic aneurysm or when an aneurysm is suspected. Early detection is crucial, as aneurysms can rupture if left untreated.

You may need an AAA ultrasound scan if you:

• Are aged 65 or over
• Are male (higher risk group)
• Have a history of smoking
• Have high blood pressure
• Have a family history of aneurysms
• Have known cardiovascular disease
• Have high cholesterol
• Experience unexplained abdominal or back pain
• Have a pulsating sensation in the abdomen
• Require monitoring of a known aneurysm

Screening allows aneurysms to be detected early, monitored safely and treated before complications occur.

Benefits of an AAA Ultrasound Scan

• Gold-standard aneurysm screening
  Most accurate non-invasive test for detecting AAA.
• Early detection of silent conditions
  Identifies aneurysms before symptoms develop.
• No radiation exposure
  Safe for repeated monitoring.
• Fast and painless
  Typically completed within minutes.
• Accurate measurement of aortic size
  Essential for monitoring aneurysm growth.
• Guides treatment decisions
  Determines whether monitoring or intervention is required.
• Cost-effective preventative test
  Reduces risk of emergency complications.
• Provides reassurance
  Confirms normal aortic size or identifies risk early.

Step-by-Step – How We Offer AAA Ultrasound Scans

Home-Based AAA Ultrasound Scan (UK-wide)

• Book your appointment online or by phone
• A qualified clinician travels to your home or chosen location
• The scan is performed in the comfort of your home
• The procedure typically takes 10–15 minutes
• Findings are explained during or shortly after the scan

Important:
AAA ultrasound scans are offered exclusively as home-visit services. This service is available UK-wide, allowing you to be screened without attending a clinic.

Your AAA Ultrasound Results Explained

AAA results are interpreted based on aortic diameter measurements, using UK clinical thresholds.

Normal Aorta

Measurement:

• Less than 3.0 cm

What it means:

• Normal aortic size
• No aneurysm detected

What happens next:
No further action required unless risk factors are present.

Small to Medium Aneurysm

Measurement:

• 3.0 – 5.4 cm

What it means:

• Aneurysm present but low immediate rupture risk

What happens next:
Regular monitoring with repeat ultrasound scans.

Large or High-Risk Aneurysm

Measurement:

• 5.5 cm or greater

What it means:

• Increased risk of rupture

What happens next:
Urgent referral to a vascular specialist for further assessment and possible intervention.