Low Dose Chest (LDCT)

Thoracic specialists at Envision

What is a LD CT Chest scan?

A Low-Dose (LD) CT Chest scan uses low dose CT Technology  to examine the chest, including lungs and heart. This type of scan is often used in people who are considered at high risk of lung disease or infections.

LD CT scans produce images of sufficient quality to detect many abnormalities in the chest while using up to 90 percent less ionising radiation than a conventional chest CT scan. Our state-of-the-art Siemens Somotom Force CT scanner features a turbo flash mode which allows us to perform ultra-low dose Chest CTs at a comparable radiation dose to a Chest X-ray.

What happens during a LD CT Chest scan?

A. Before your scan

What to bring

  • Your request form
  • Any relevant previous imaging
  • Your Medicare card and any concession cards

Preparation – On the day of the scan

You will be asked to fill out a questionnaire regarding your health status, medication, and any known allergies. If there is any chance you may be pregnant, please inform us before your scan. You may also be asked to change into a gown and remove some jewellery for your scan.

B. During your LD CT Chest scan


When you are transferred to the CT room you will be made comfortable on the examination table. The examination table slides you into the centre of the CT machine and some preliminary pictures are taken to confirm the scan position.

A member of our medical imaging specialist team will indicate when to breathe in, breath out or hold your breath to ensure the most accurate pictures.

The scan will take 15 minutes.

Risks and side effects

A LD CT Chest is a very low-risk procedure. Find out more about CT Risks and Side Effects.

Who will perform my scan?

Our specialist medical imaging team will perform your LD CT Chest scan.

What happens after a LD CT Chest scan?

How do I get my results?

After your appointment, the information from your scan is processed and interpreted by Envision’s medical imaging team before delivery of a report to your doctor.

Post procedural information

You will be able to return to your normal daily activities after your scan.