Home / Blog / CT Scans Demystified: What Patients Need to Know
When facing medical imaging, having questions and perhaps even some concerns is natural. A CT or computed tomography scan is a medical diagnostic tool that allows doctors to see inside your body. It uses a combination of X-rays and computer technology to create detailed images of your organs, bones, and other tissues. This guide aims to demystify CT scans, explaining their purpose, how they differ from other imaging tools, and what you can expect during the procedure.
What is a CT scan?
A CT scan combines multiple X-ray measurements taken from different angles to produce cross-sectional images of specific areas of your body. Unlike regular X-rays that capture two-dimensional images, CT scans provide a three-dimensional image. This allows for a much more detailed examination of the body’s internal structures.
Why are CT scans done?
Doctors order CT scans for a myriad of reasons, but primarily to:
Diagnose muscle and bone disorders, such as bone tumours and fractures.
Pinpoint the location of a tumour, infection, or blood clot.
Guided procedures such as biopsies and joint injections for pain management.
Detect and monitor diseases like cancer and heart disease.
Detect internal injuries and internal bleeding.
CT scans are invaluable in emergencies, providing rapid diagnoses of head, spine, chest, or abdomen injuries.
How do CT scans differ from other imaging services?
CT scans are often compared to other imaging forms like MRI (magnetic resonance imaging) and standard X-rays. The main differences lie in the details provided and the technology used:
MRI vs. CT scan: MRI uses strong magnetic fields and radio waves to create images and is particularly good at imaging non-bony parts or soft tissues of the body, such as the brain, spinal cord, and muscles.
X-ray vs. CT scan: Standard X-rays are quicker and cost less but provide less detail than CT scans. Where X-rays give a flat image, CT scans offer a three-dimensional look.
Preparing for a CT scan
Preparing for a CT scan is generally straightforward:
You may need to avoid eating for a few hours before your scan.
You might have to remove metal objects, which can interfere with the imaging.
Depending on the area being examined, a contrast material may be used to enhance visibility in the images. This can be administered orally or intravenously.
During the procedure
During a CT scan:
You’ll lie on a motorised bed that slides into the circular opening of the scanning machine.
Stay as still as possible to achieve clear images.
The procedure is typically painless and can last anywhere from a few minutes to half an hour, depending on the body part being examined.
FAQs about CT scans
How safe is a CT scan?
CT scans involve exposure to radiation, but the diagnostic benefits far outweigh the small potential risk. Technological advances have significantly reduced the radiation doses used in CT imaging.
Can children have CT scans?
Yes, children can have CT scans, but radiation exposure is always a concern. Paediatric settings on machines minimise the dose.
Is there any aftercare required following a CT scan?
No specific aftercare is required after a CT scan. You can return to your normal activities immediately unless your doctor advises otherwise.
How soon will I receive my CT scan results?
The timing can vary, but your doctor will generally receive the results within a few days and discuss them with you at a follow-up appointment.
If you need a CT scan and you’re looking for expert care and detailed diagnostic services, look no further than Xplore Radiology.
Our state-of-the-art technology and experienced medical professionals ensure you receive the highest quality imaging and comprehensive support through your diagnostic journey.
Contact us today to book your CT scan and take an informed step towards managing your health.
