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Bowral, Southern Highlands

CT Scan

A low dose CT scan is a non-invasive imaging test that uses X-rays and computer technology to create detailed cross-sectional images of the inside of your body. These images provide more information than regular X-ray images, allowing healthcare providers to better diagnose and monitor and diagnose a variety of medical conditions, such as injuries, infections, cancers, and internal organ disorders.

Using advanced technology and low-dose radiation, modern CT scans offer quick, accurate results for effective treatment planning.

Modern CT technology has advanced significantly, allowing scans to be performed with substantially lower radiation exposure than older-generation systems.

Our practice uses the advanced GE Revolution Apex Elite CT Scanner, one of the latest premium CT scanners available, designed with sophisticated low-dose imaging technology to help minimise radiation exposure wherever clinically appropriate.

Using intelligent dose modulation, high-speed image acquisition, and advanced image reconstruction software, the system is able to produce exceptionally detailed images while optimising radiation dose for each individual patient. This is particularly important for patients who may require repeat imaging over-time, as well as younger patients.

Unlike some providers who simply market the term “low dose”, our scanner is purpose-built with genuine next-generation dose reduction technology, helping deliver outstanding image quality alongside a strong commitment to patient safety and diagnostic accuracy.

What to Expect

Gibraltar Radiology perform a wide range of general, angiography, screening and oncology CT examinations.

Please see below for information on some of the most commonly referred services that we provide.

Explore Procedures

CT Scan Examinations

What is a CT Scan?

  • A CT scan combines multiple X-ray images taken from different angles and uses computer processing to create detailed cross-sectional images of your body.
  • It is a simple, fast and usually painless procedure which can visualise internal structures throughout the body.

How Do You Prepare for a CT Scan?

Head, neck and chest scans:

  • Do not eat for four hours prior to your appointment time. You may drink a small amount of water.

Abdomen and pelvis scans:

  • Do not eat for four hours prior to your appointment time. You may drink a small amount of water.
  • For some specific examinations, you may be asked to drink an oral contrast solution over a 45-60 minute period before your examination. This is used to highlight your bowel on the images. The timing of your appointment will be made accordingly.

Renal scans:

  • Having a full bladder will assist better imaging for this scan. Please do not empty your bladder within the hour prior to your appointment. Diabetic patients should discuss their medications when making their appointment.

Before the Scan

  • Clothing: You may be asked to change into a hospital gown and remove any jewellery or metal objects.
  • Contrast dye: Some CT scans require a contrast dye to help highlight specific areas inside your body. If required, this will be injected through a small IV catheter into your vein. If you’re allergic to contrast material or have kidney problems, let your doctor know.

What Happens During the CT Scan?

  • Positioning: You will lie on a table that slides into the CT scanner. Depending on the area being scanned, you may be asked to hold still or hold your breath for a few seconds.
  • The scan: The CT scanner uses an X-ray tube that rotates around your body while taking images. The procedure is painless, but you may hear buzzing or clicking sounds from the machine.
  • Duration: The procedure typically takes around 5 to 20 minutes, though it may vary depending on the complexity of the scan.

After the CT Scan

  • If you had contrast dye, you might be asked to drink fluids to help flush it out of your system.

Risks and Considerations

  • Radiation exposure: CT scans involve exposure to X-rays, but the benefits of the scan typically outweigh the risks. The amount of radiation used is generally low, but pregnant women should avoid CT scans to prevent harm to the baby.
  • Contrast dye reactions: Some people may experience mild reactions to contrast dye, such as a rash or nausea. In rare cases, more serious reactions can occur, so inform your healthcare provider if you have a history of allergies or kidney problems.

Results and Follow-Up

  • After the CT scan, a radiologist will examine the images and send a report to your doctor.

What is a CT Arthrogram?

A CT arthrogram is an excellent way of imaging the internal structure of joints. An injected contrast dye allows for cartilage, ligaments and joint lining to be highlighted. Structures around the joint (tendons, muscles and bones) are also imaged.

Why Is a CT Arthrogram Needed?

This procedure is typically recommended to:

  • Diagnose joint problems, such as tears in cartilage, ligaments or labral tears.

Preparing for the Procedure

  • Medications: Please let us know if you are taking any blood thinning medication (warfarin, dabigatran, apixaban, aspirin or clopidogrel). You may need to have a blood test before the procedure and have your medication adjusted by your doctor.
  • Allergies: Notify us if you have any allergies, especially to contrast dyes or iodine.
  • Pregnancy: If you are pregnant or suspect you might be, inform your healthcare provider. CT scans involve radiation, which may not be recommended during pregnancy.

What to Expect During the Procedure

  1. Positioning: Your will be asked to wear a gown. A radiologist will explain the procedure to you. You will be positioned on the CT scan table, and the area of the joint being examined will be cleaned and sterilized.
  2. Injection of Contrast Dye: A needle will be inserted into the joint to inject an iodine contrast dye, which may cause a sensation of fullness or pressure in the joint.
  3. CT Scan: After the injection, you will be asked to lie still while the CT scanner takes images of the joint. You may be asked to change positions during the scan to get different views.
  4. Duration: The procedure typically lasts between 30-60mins, including preparation time.

After the Procedure

  1. Post-Procedure Care: Once the procedure is complete, you may experience mild discomfort, swelling, or bruising at the injection site. These should resolve within hours. If pain persists beyond 24 hours please contact your doctor.
  2. Follow-up: Please book in to see your referring doctor to discuss the findings of the CT arthrogram.

Possible Risks and Complications
While a CT arthrogram is generally safe, there are some risks, including:

  • Radiation: You will receive a small dose of x-ray radiation.
  • Infection: Though rare, there is a small risk of infection at the injection site.
  • Allergic reaction: Some patients may have an allergic reaction to the contrast dye.
  • Bleeding: There is a very small risk of bleeding at the injection site.
  • Discomfort: Some discomfort or soreness at the injection site is common and should subside within a few days.

If you experience severe pain, swelling, redness, or fever after the procedure, contact your doctor immediately.

What is a CT Calcium Score?

A CT Calcium Score (also known as a coronary artery calcium (CAC) score) is a non-invasive imaging test that uses a computed tomography (CT) scan to detect the presence of calcium in the coronary arteries. The presence of calcium is an indicator of plaque buildup in the arteries, which can increase the risk of heart disease, heart attacks, or other cardiovascular problems.

The CT calcium score helps identify individuals at risk for coronary artery disease (CAD) even before symptoms appear. This early detection enables preventative treatment to be commenced before serious heart conditions develop.

Why is a CT Calcium Score Performed?

A CT Calcium Score is used to:

  • Assess risk for coronary artery disease (CAD), particularly in individuals who may not yet have symptoms (e.g., chest pain or shortness of breath).
  • Identify early-stage heart disease in people who may not yet show signs or symptoms.
  • Help determine the appropriate treatment and lifestyle changes, including medications, to reduce heart disease risk.
  • Monitor heart disease progression in individuals with known risk factors or pre-existing conditions (e.g., diabetes, hypertension, family history of heart disease).

Who Should Consider a CT Calcium Score?

Your doctor may recommend a CT Calcium Score if you are:

  • At intermediate risk for coronary artery disease and between the ages of 40–75.
  • A smoker, diabetic, or have high cholesterol, high blood pressure, or a family history of heart disease.
  • Concerned about your heart health, but do not yet show symptoms.
  • Trying to assess the risk of heart disease in a way that may guide decisions about treatment options, such as statins.

How is the Test Done?

  • The procedure is quick, non-invasive, and usually takes only 5-10 minutes.
  • You will be asked to lie down on a table that slides into the CT scanner.
  • Electrode stickers will be placed on your chest to monitor your heart’s electrical activity during the scan.
  • You may be asked to hold your breath briefly while the scan is performed to reduce motion and ensure clear images.
  • The CT scanner will produce detailed images of your heart, focusing on the coronary arteries.

What Does the CT Calcium Score Mean?

The calcium score reflects the amount of calcified plaque in your coronary arteries. The higher the score, the greater the amount of plaque and the higher the risk for heart disease. The results are generally classified as follows:

  • 0: No calcium detected – Low risk of heart disease.
  • 1–10: Minimal amount of calcium – Low risk.
  • 11–100: Mild amount of calcium – Moderate risk.
  • 101–400: Moderate amount of calcium – Increased risk.
  • Over 400: High amount of calcium – High risk.

Your score will help your doctor make decisions about treatment, lifestyle changes, or whether further testing is necessary.

Benefits of the CT Calcium Score

  • Non-invasive: No surgery or needles are required.
  • Quick and accurate: Provides detailed and clear images to assess plaque buildup.
  • Early detection: Helps identify individuals at risk of heart disease before symptoms arise.
  • Guides treatment: Helps your doctor decide whether you need medication or lifestyle changes.

Risks and Limitations

  • Radiation exposure: A CT scan does involve a small amount of radiation, but the risk is generally considered low. Your doctor will assess whether the benefits outweigh the risks.
  • Not suitable for everyone: This test may not be recommended for individuals with existing heart disease or those at very low risk for cardiovascular issues.
  • Limited to detecting calcium: The test does not show soft plaque (non-calcified) which may also pose a risk for heart attack.

After the Scan

  • Please book a follow up appointment with your doctor to discuss your results.

The test may be part of a larger strategy to help reduce your risk for heart disease, including lifestyle changes (e.g., diet, exercise), medications, or further tests.

What is CT Coronary Angiography?

It is a non-invasive examination that uses computed tomography (CT) to look at the blood vessels that supply the heart with blood (coronary arteries), the heart musculature, the chambers and function of the heart. This examination can detect blockages, known as plaques that are soft or calcified in nature and provide information about their location and the severity of the blockage to your doctor for necessary treatment. Iodinated contrast medium is used to highlight the blood vessels.

Why is CT Coronary Angiography Done?

Your doctor may recommend a CTCA if you are at risk for coronary artery disease (CAD) or have symptoms like chest pain, shortness of breath, or irregular heartbeats. It can help evaluate:

  • Blockages or narrowing of the coronary arteries
  • The presence of plaque buildup in the arteries
  • Abnormalities in the coronary anatomy

How should I prepare for the examination?

In CT coronary angiography, a slower heart rate makes it possible for the scanner to capture high-quality images of your blood vessels.

Please:

  • fast for 4 hours prior to the appointment
  • arrive early to your appointment to allow time for your heart rate to settle.
  • do not drink caffeinated drinks or smoke 24-hours prior to the exam
  • do not exercise on the day of the examination.
  • stop erectile dysfunction medication 3-days prior to the exam.

How is the Test Performed?

Preparation:

  • You will be asked to change into a gown. ECG leads (three dots) will be placed onto the chest to allow monitoring of the heart rate during the examination.
  • A small IV cannula will be placed into a vein in your arm.
  • A spray of GTN (angina medication) under the tongue will be given to dilate the heart arteries.

Procedure:

  • You will lie down on a table that slides into the CT scanner.
  • Contrast dye (usually iodine-based) will be injected into the catheter. You may feel some warmth or a flushed sensation from the contrast dye injection.
  • The CT scanner will rotate around you, taking multiple images to create detailed 3D pictures of your coronary arteries.
  • You will be asked to hold your breath for short periods (10-seconds) during the exam.
  • The test will take about 20-minutes.

After the Scan

  • The results of the CTCA will be reviewed by a radiologist and can be discussed with your doctor within 24hrs or the next working day.
  • If you have received a contrast dye, be sure to drink plenty of fluids afterward to help clear it from your body.

Risks and Considerations:

  • Radiation Exposure: Although CTCA involves exposure to X-rays, the amount of radiation is relatively low. Your doctor will weigh the benefits and risks before recommending the test.
  • Allergic Reaction to Contrast Dye: While rare, some people may experience an allergic reaction to the dye. Be sure to inform your doctor if you have any known allergies or kidney problems.

Australia’s New National Lung Cancer Screening Program is a screening tool designed to detect early signs of lung cancer, especially in high-risk individuals. Using advanced CT technology with lower radiation, it provides detailed images of the lungs to identify abnormalities such as tumours or lesions. This quick and non-invasive procedure can lead to earlier, more effective treatment

Patient Information Sheet:

The Australian government has introduced a new National Lung Cancer Screening Program aimed at detecting lung cancer at an early stage, when it is easier to treat. This program is for people who are at high risk of developing lung cancer and provides an opportunity for early detection, improving survival rates and outcomes.

Who is Eligible for Screening? The program is designed for people who:

  • Are aged 50 to 70 years.
  • Have a history of smoking 30 pack-years
    • A “pack year” is defined as smoking one pack of cigarettes per day for one year. For example, if you smoked one pack a day for 20 years, you would have 20 pack years.
  • Currently smoke or have quit smoking in the last 10-years

Please Note: People with symptoms of lung cancer, such as persistent cough, unexplained weight loss, or chest pain, should see their doctor immediately. This screening program is for people without symptoms but who are at high risk.

What is Lung Cancer Screening?

Lung cancer screening involves a test called a low-dose CT scan (LDCT), which takes detailed images of the lungs. This test can help detect early signs of lung cancer before symptoms appear, increasing the chances of successful treatment.

How Does the Screening Work?

  1. Referral from Your GP: If you are eligible, your GP will refer you for a low-dose CT scan. If you’re unsure whether you’re eligible, ask your GP.
  2. The Low-Dose CT Scan: The screening involves lying on a table while a CT scanner takes pictures of your lungs. The procedure is quick, painless, and usually takes about 10 minutes. You may need to hold your breath briefly during the scan.
  3. Results: After the scan, a specialist radiologist will review the images. If no concerning abnormalities are found, you will be informed, and the next screening appointment will be scheduled in 2 years. If anything suspicious is detected, further tests or consultations with a lung cancer specialist may be recommended.

Benefits of Lung Cancer Screening:

  • Early Detection: Screening can detect lung cancer at an early stage when it is more treatable.
  • Improved Outcomes: Early treatment significantly improves survival rates for lung cancer patients.

Possible Risks and Considerations:

  • False Positives: Sometimes the screening may suggest something abnormal, but further testing may show that it is not cancer. This can cause anxiety and unnecessary follow-up procedures.
  • False Negatives: In rare cases, the screening may miss some cancers, especially if they are in the early stages.
  • Radiation Exposure: The low-dose CT scan involves a small amount of radiation. However, the benefit of early cancer detection outweighs the risks associated with this radiation.

What Happens After Screening?

  • No Further Action: If your results are clear, you will be asked to return for another screening in two years.
  • Further Testing: If the scan shows something abnormal, your doctor may recommend additional tests, such as a biopsy, bronchoscopy, or PET scan, to determine whether you have lung cancer or another condition.

Important Reminders:

  • Don’t Skip Your Screening: If you are eligible for the program, regular screening is important for early detection.
  • Talk to Your Doctor: If you have any concerns or questions about the screening process, talk to your doctor. They can help guide you through the program and discuss whether it’s right for you.

Contact Information:

If you have questions about the National Lung Cancer Screening Program or want to learn more, you can contact the following:

  • Your General Practitioner (GP) for more details about your eligibility and the referral process.
  • The National Cancer Screening Program hotline: 1800 627 701
  • For further information, visit the official National Lung Cancer Screening Program website: https://www.health.gov.au/our-work/nlcsp

Are CTs Safe?

You will receive a small dose of x-ray radiation. Please advise the radiographer if you are, or think you may be pregnant.

After the Exam

The CT images will be reviewed by a radiologist and sent to your doctor. Please book an appointment with your referring doctor to discuss the findings. Most results are available within a few days.

Key Features of Our Clinic

Our point of difference

All Referrals Welcome

In Australia, radiology referrals are not clinic-specific. You can use a referral made out to another clinic here.

Expert Radiologists

An imaging study is only as good as the specialist reporting it. Our team are highly-experienced radiologists, with sub-specialised areas of expertise.

Latest Technology

We have invested in the latest low-dose imaging technology, which offer enhanced clarity, to ensure our patients enjoy the safest clinical experience possible.

Fast Reporting

Onsite Radiologists means rapid turn-around of reports, with results sent back to your referrer within 24-hours, or the next working day.

Urgent Appointments

Clinically urgent appointments are always accommodated. Please call reception for further assistance.

All Referrals Welcome

In Australia, radiology referrals are not clinic-specific. You can use a referral made out to another clinic here.

Expert Radiologists

An imaging study is only as good as the specialist reporting it. Our team are highly-experienced radiologists, with sub-specialised areas of expertise.

Latest Technology

We have invested in the latest low-dose imaging technology, which offer enhanced clarity, to ensure our patients enjoy the safest clinical experience possible.

Fast Reporting

Onsite Radiologists means rapid turn-around of reports, with results sent back to your referrer within 24-hours, or the next working day.

Urgent Appointments

Clinically urgent appointments are always accommodated. Please call reception for further assistance.

Our Team

Meet Our Radiology Team

Dr Andrew Low

BEng, MSc, MBBS(Hons 1), FRCPC, FRANZCR

Radiologist

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Dr James Bewes

BScAdv, MMedPhys, MBBS(Hons), FRANZCR

Radiologist

View Profile

Questions

If you have any questions or concerns about CTs, please feel free to contact our friendly staff.

Ask a Question

Expert imaging. Clear answers. Compassionate care. Book your appointment today!

If you wish to make a booking or require urgent attention, please get in touch with our friendly team to make a booking.

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Dear Patients

Welcome to our brand new clinic!

We now have appointments available with minimal wait times for:

  • X-ray
  • Ultrasound
  • Ultrasound Guided Procedures
  • CT (including Cardiac CT)
  • CT Guided Procedures
  • MRI (including Cardiac MRI)
  • MRI for patients with eligible Pacemakers

The majority of our services have same-day or next-day availability, (excluding MRI and more complex examinations).

Please phone or email our team to make a booking. Online bookings also coming soon!

All referrals accepted.