Imaging

CT imaging

Computed tomography (CT) uses X-rays to produce cross-sectional images of the inside of the body. Here is what to know before you arrange a scan.

How a CT scan works

X-ray measurements taken from many angles are combined into cross-sectional images, which can also be displayed as three-dimensional views. Ask the team about positioning for your examination.

A 3D view is a way of displaying the scan data. It does not replace a properly performed scan or a professional interpretation of the images.

The body region and protocol depend on the question your clinician needs answered.

At a glance

Method
X-ray measurements from many angles
Images
Cross-sectional slices, which can be shown as 3D views
Radiation
Yes, ionizing radiation
Starts with
A clinical question and the body region to examine

Different CT examinations

Ask which body region and protocol a proposed CT examination covers.

Single-region scans

A single-region scan covers one area, such as the cervical, thoracic or lumbar spine; a knee, shoulder or hip; or the sinuses or facial bones. It is listed at $450 and includes 3D reconstruction of that area. Confirm exactly which anatomy is included.

Heart and lung studies

Heart assessment and lung screening use specific protocols and eligibility criteria. Ask whether the study your clinician recommends suits you and is currently available. A chest and lung CT and a coronary calcium score are part of the Total Clarity package.

Benefits and limits

CT can help a clinician evaluate internal structures, but it involves ionizing radiation. You, your clinician and the imaging team should weigh the expected benefit against that exposure for your circumstances.

If you are or may be pregnant, tell us before the examination.

A scan may show an unexpected finding that needs further evaluation. A normal result does not rule out every condition or replace ongoing medical care.

Broad screening without symptoms differs from testing for a defined clinical question. Discuss the reason for testing, and what could follow from the result, with a qualified clinician.

Before your scan

Do I need a referral for CT?

Ask us when you call. Whether an order is needed depends on the examination. If you already have a referral, ask how to send it before sharing any documents.

How should I prepare?

Ask for the preparation instructions for your scan before the appointment. Do not fast or stop prescribed medication unless your clinician or the imaging team tells you to.

How much does a CT scan cost?

A single-region CT, covering one body region, is listed at $450 including 3D reconstruction. Confirm the exact examination and what is included when you call. Scan prices.

Ask about a CT scan

Tell us which scan your clinician recommended and ask about availability, preparation and what the scan includes.