CT
Scans
CT stands for Computerised Tomography
(also referred to as a CAT scan). CT’s use x-rays
to take pictures from different angles around the body.
A computer then takes these images and produces image slices
or cross-sections through the relevant areas of the body.
Each scan equals a single slice, similar to slices in
a loaf of bread.
CT scanners acquire images
rapidly and in sequence with multiple slices being stacked
together to form a3 dimension image.
Again, having a CT scan is completely painless and involves
the patient lying down and being placed into the doughnut-shaped
CT scanner. As the patient passes through the CT imaging
system, a source of x-rays rotates around the inside
of the circular opening.
A single rotation takes around 1 second.
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FAQ
Q: What happens during a CT scan?
A: You will be required
to lie very still on a table, which is moved into
the round scanning area containing the x-ray tube
and detectors. The scanner makes a buzzing sound
as it rotates around the part of the body being examined.
A computer processes the information and the images
are then produced.
Q: Is there any preparation needed?
A: When the abdomen or
pelvis is being examined, you may be given a special
drink). This gives a clearer outline of the bowel
area and aides in interpreting the area more accurately.
For other examinations, you may be required
to be injected with a contrast or dye, again designed
to provide the clear information. You may also be
asked to fast for a certain time period. Finally,
please remember to bring along your referral form
from your Doctor and any previous x-rays.
Q: How long will the examination last?
A: Usually, up to 20
minutes.
Q: How do I obtain my results?
A: The films and reports
will be delivered to your Doctor and he/she will
discuss any findings in person.
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