What is CT Scan
What does “CT Scan” stand for?
Computed Tomography Scan
How long does a CT scan usually take?
Around 10 - 30 minutes long
What is the main purpose of a CT scan?
To create detailed, cross sectional images of the body’s internal structures.
Including bones, soft tissues, organs, and blood vessels.
It is to diagnose diseases, injuries, or abnormalities
Name ONE advantage of CT scans.
1. Fast
2. Detailed
3. Painless
4. Non-invasive
How much CO₂ does one CT scan produce?
About 9.2 kg
What other name is a CT scan known as?
CAT scan (Computerized Axial Tomography)
Is a CT scan painful, and does it physically insert anything into the person?
No, it is painless and does is not invasive to the human body.
Name ONE condition a CT scan can detect.
1. Tumours
2. Infections
3. Broken bones
4. Internal bleeding
What is the MAIN disadvantage of CT Scans?
Radiation exposure
Why do CT scans use a lot of energy?
X-ray tube, cooling systems, image processing
What two main things are used to create CT images?
X-rays and a computer
Why must patients remove metal objects before a scan?
To prevent image interference, known as artifacts.
How do CT scans help with cancer treatment?
Plan treatment or check if treatment is working
Why are repeated CT scans risky?
Increased risk of cancer / cell damage
What is one ethical concern about CT scans?
Overuse or not informing patients of other options
How are CT images created?
Multiple X-ray images from different angles combined by a computer
Name ONE thing a patient may have to do during the scan.
1. Stay still
2. Hold breath
3. Lie on moving table
Besides diagnosis, what else can CT scans help with?
Monitoring diseases or guiding procedures (like biopsy)
Why are CT scans more dangerous for children?
The radiation affects them more
What is an “accidental finding”?
Finding something unexpected that may cause unnecessary stress or treatment
What is the purpose of iodine based contrast dye in CT scans?
To make organs and blood vessels more visible
List TWO possible effects after receiving contrast dye.
Nausea, vomiting, metallic taste, dizziness.
Why are CT scans important for doctors’ decision making?
They provide fast, highly detailed 3D pictures of the inside of the body, allowing them to make accurate, life saving decisions quickly.
Name TWO risks related to contrast dye.
1. Allergic reactions
2. Kidney damage
Who is a Canadian professional that uses CT scans and what does he study?
Jonathon A. Leipsic –> studies the heart and blood vessels