CT Scans

What is a CT scan?

A computed tomography (CT) scan combines a series of X-ray images taken from different angles around your body and uses computer processing to create cross-sectional images (slices) of the bones, blood vessels and soft tissues inside your body. CT scan images provide more-detailed information than plain X-rays do. A CT scan can be used to visualize nearly all parts of the body and is used to diagnose disease or injury as well as to plan medical, surgical or radiation treatment.

Who performs the examination?

CT images are taken by specialist staff called Radiographers. These images are then interpreted and reported upon by specialist doctors called Radiologists.

What happens during the examination?

For the examination, your Radiographer may ask you to remove any clothing that might obstruct the accuracy of your images and wear a provided gown where necessary. You will then be asked to lie on the CT table which slides through the circular CT machine. When this is happening you will be asked to keep very still, and in some cases to hold your breath for a short period of time. Whilst you are doing this, the CT machine will be taking images. In some instances it may be advised that you receive an injection of a CT contrast dye to aid in the Radiologist's diagnosis, this will be discussed with you prior to the examination taking place. Once the Radiographer is satisfied that the images are accurate the procedure is finished.

Do I need to do any preparation before I have a CT scan?

Most CT scans require preparation in order to ensure that the images are accurate. These will typically involve fasting and sometimes you will be asked to drink water prior to your appointment.

Are there risks associated with contrast?

CT contrast is an iodine-based solution. Whilst it is very safe and commonly used, like any medication there is always a small chance that it may cause an allergic reaction. Before you are given the contrast you will be asked if you have any allergies or contraindications to the dye. In such cases, alternative imaging methods can be considered.

Do I have to make an appointment for a CT scan?

Booked and walk-in patients are welcome depending on the examination. Although there is usually little or no waiting times for a CT scan, appointments are recommended as there is often some preparation required.

‍

‍