& Nuclear MedicineSt Vincent’s Clinic Level 5, 438 Victoria Street,
Darlinghurst NSW 2010Opening hours: 8.30am–5.00pm Tel: 02 8382 7530 Fax: 02 8382 6507www.svcmi.com.au
consent forms will be required to be completed prior to
the commencement of the examination. A radiographer
CT stands for computerised tomography and is
CT scanners use x-rays which are a form of ionising
or department nurse will go through these documents
sometimes also still referred to as CAT scanning. It is
radiation. All radiation doses are cumulative and have a
with you and assist with any questions you may have at
an imaging technique that uses x-rays to acquire images
risk. Modern scanners such as that used at St Vincent’s
rapidly in multiple fine slices through the area of interest.
Clinic Medical Imaging & Nuclear Medicine have
Please ask the staff any questions you may have.
At St Vincent’s Clinic Medical Imaging & Nuclear
specialised software to minimise the radiation dose. Our
Medicine you will be scanned on a multislice scanner
professional commitment is to keep your dose as low as
which takes a fraction of a second to obtain the data
needed in each slice and can produce multiple views of
Contrast agents used in radiology are stable safe
CT examinations require an appointment to be made.
compounds as long as they are not contraindicated
Sometimes this may be immediately available but in
due to a patient’s particular medical condition. Contrast
order to ensure that you receive an optimal examination
agents are only administered after stringent safety
we do ask you to call us or drop in with your referral for
checks have been completed and approved. Details
assessment as some preparations may be required.
CT scanning is used for diagnostic imaging of all body
of all allergies, particularly to iodine and medications
parts. With the advent of multislice technology, CT
particularly metformin (diabetic medication), should
has been adapted for use in a wide range of clinical
be disclosed to booking staff and clinical staff prior to
applications including the diagnosis of disease, the
your test. Pregnant women and breast feeding mothers
functioning of human organs and blood vessels as well
should also make their condition known prior to any
as guidance for interventional procedures such as biopsy
• You will need a referral from your doctor before having
In many CT examinations oral and or intravenous
contrast may be recommended. Contrast agents are
• Check the preparation required with our booking staff
used to increase the detail and clarity of images as well
as add information on the functionality of the area being
As with most imaging techniques the exact procedure
scanned. Contrast is administered after a radiologist has
will vary slightly depending on which body part is being
• Advise booking staff of any medical conditions that
reviewed your referral and/or your preliminary scans.
may contraindicate preparations or the test itself.
Contrast is not a medication and does not have any
• You will have a safety form to fill out before any
• Bring any previous relevant imaging you have.
• You may need to drink some oral contrast for
abdominal and pelvic scans prior to the test.
Preparations for CT vary with the type of test being
performed. At St Vincent’s Clinic Medical Imaging &
CT scans are performed by specially trained
• You may require an intravenous contrast injection.
Nuclear Medicine the majority of CT examinations do not
radiographers, sometimes with the assistance of nursing
• You will be asked to change into a gown.
personnel, and under the guidance and supervision of
• You will lie on the CT table which will move through
• Virtual Colonoscopy – due to the need for the bowel
radiologists. At St Vincent’s Clinic Medical Imaging &
the machine when the scans are being taken.
to be free of faecal matter a preparation sheet will be
Nuclear Medicine your CT will be planned by an onsite-
given or sent to you upon booking this procedure.
radiologist, performed by senior radiography staff and
• You may be given breathing instructions during
• CT Cholangiograms – fasting is required from midnight
then checked and reported by the radiologist.
to your appointment time. Contrast is infused
The department’s nursing and/or radiography staff will
45 minutes prior to your scan whilst you are in the
thoroughly discuss your particular scan with you at the
time of your examination. Your consent will be sought
• Cardiac CT – may require cessation of certain
For all interventional examinations, including possible
intravenous injections, safety, medical history and
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