What Is a Radiology Referral?

A radiology referral (also called an imaging request) is a document from a doctor that asks a radiology provider to perform a specific imaging test, such as an X-ray, ultrasound, CT scan, or MRI. Imaging helps clinicians diagnose injuries and illness, confirm or rule out serious conditions, guide treatment decisions, and monitor progress over time.

In Australia, most medical imaging requires a referral because the radiology clinic needs clear instructions about what area to image, what type of scan is required, the clinical reason for imaging, and where the report should be sent. A referral also helps ensure imaging is used appropriately, because not every symptom needs a scan, and unnecessary imaging can lead to false alarms, radiation exposure (for some scans), and avoidable costs.

This guide explains what a radiology referral is, why doctors order imaging, common scan types, what an imaging request form includes, how radiology results are handled, preparation and safety considerations, costs and billing basics, privacy, and how telehealth can fit into the radiology referral process. This content is general information only and not medical advice.

Radiology vs pathology: what's the difference?

Radiology uses imaging (pictures) to assess structures inside the body, such as bones, organs, and soft tissues. Pathology uses laboratory testing of samples (blood, urine, swabs) to assess things like infection, inflammation, hormones, and organ function.

Both are “referrals” in the sense that they are requests for investigations, but they answer different clinical questions. For pathology basics, read What Is a Pathology Referral?.

Why doctors order imaging

Imaging is usually ordered to clarify diagnosis, assess severity, or rule out serious causes. Doctors use clinical judgement to decide whether imaging is needed now, later, or not at all. Many conditions can be diagnosed clinically without imaging, and guidelines often recommend “watch and wait” for certain symptoms when the risk is low.

Common reasons for imaging include:

• Suspected fractures or significant injury after trauma.
• Persistent pain where a structural cause is suspected.
• Suspected gallstones, kidney stones, or abdominal organ issues.
• Persistent or worsening symptoms where serious causes must be ruled out.
• Monitoring known conditions (for example, follow-up imaging).
• Guiding certain procedures (for example, some ultrasound-guided interventions).

Imaging decisions are tied to safety: doctors consider red flags, severity, and whether findings would change management.

Common radiology tests in Australia

Different scan types are used for different clinical questions. Here's a practical overview of what you might see on a referral.

X-ray

X-rays are commonly used to assess bones and detect fractures, dislocations, and some chest issues. They involve radiation, but usually at relatively low levels compared to CT. X-rays are often used for acute injury assessment.

Ultrasound

Ultrasound uses sound waves, not radiation. It is commonly used for soft tissue assessment (for example, gallbladder, kidneys, abdominal organs), pregnancy-related imaging, and many musculoskeletal soft tissue concerns. Ultrasound can be a first-line test for many conditions because it is safe and widely available.

CT (Computed Tomography)

CT scans provide detailed images and are often used when the clinical question requires more detail than an X-ray can provide, such as assessing internal injuries, complex fractures, or certain abdominal and chest concerns. CT involves higher radiation exposure than X-ray, so it is usually ordered when clinically justified.

MRI (Magnetic Resonance Imaging)

MRI uses magnetic fields and radio waves, not radiation. It is commonly used for soft tissue, spinal, joint, neurological, and complex musculoskeletal issues. MRI can be very informative but is often more expensive and may have longer wait times.

Other imaging types

Depending on the scenario, referrals may also be for specialised imaging such as mammography, bone density scans, nuclear medicine imaging, or other targeted studies.

What a radiology referral (imaging request) includes

Radiology providers need clear instructions to perform the correct test safely. While forms vary, imaging requests commonly include:

• Your identifying details (name, date of birth, and other identifiers).
• Referring doctor details (name, provider number, practice details).
• Requested scan type and body part/region to image.
• Clinical notes (why the scan is needed, symptoms, suspected diagnosis).
• Urgency (routine vs urgent) when applicable.
• Relevant risk notes (for example, pregnancy status where relevant).
• Where to send the radiology report (usually to the referring doctor).

The “clinical notes” section matters because it helps radiologists interpret findings in context and ensure the right protocol is used.

How a radiology referral is issued

Imaging requests are issued after a clinical assessment. The clinician assesses your symptoms, timeline, severity, and red flags, and decides whether imaging is necessary. If imaging is ordered, the clinician chooses the appropriate modality (X-ray vs ultrasound vs CT vs MRI) based on the suspected condition and the safest, most informative test.

Sometimes doctors order imaging after first arranging other steps, such as physical examination, conservative treatment, or pathology tests. This is not a delay for the sake of it; it is often aligned with clinical guidelines and risk management.

Can telehealth doctors issue radiology referrals?

In many cases, telehealth doctors can issue radiology referrals when it is clinically appropriate and a safe assessment can be done remotely. Telehealth can be suitable for certain follow-ups, persistent symptoms with clear history, or scenarios where imaging is a logical next step based on symptoms and risk.

However, telehealth may not be appropriate when a physical examination is required to decide whether imaging is needed, when there are red flags that require urgent in-person assessment, or when symptoms are severe and unclear. In those cases, the clinician may recommend in-person care rather than issuing routine imaging requests.

For suitability guidance, read When Telehealth Is Not Appropriate and How Clinical Judgement Applies in Telehealth.

Preparing for your imaging appointment

Preparation depends on the type of scan. The radiology clinic will usually provide instructions at booking. Common preparation points include:

• Bring your referral (or follow the clinic's digital upload process).
• Bring photo ID and any Medicare/private health information if relevant.
• Arrive early to complete safety and consent paperwork.
• For ultrasound, you may need a full bladder or fasting, depending on the area being scanned.
• For CT with contrast, you may be asked about kidney function, allergies, and previous reactions.
• For MRI, you will be screened for metal implants or devices and may need to remove jewellery.

If you're preparing through telehealth, read Preparing for a Telehealth Appointment.

Safety considerations: radiation, pregnancy, contrast, and implants

Radiology safety is a key reason referrals require clinical judgement and proper documentation.

• X-ray and CT involve radiation, so clinicians try to avoid unnecessary exposure, especially in pregnancy.
• Ultrasound and MRI do not use radiation, but MRI requires careful screening for implants and metal.
• Some CT and MRI scans use contrast agents; clinics screen for allergies and kidney risks.

Always tell your clinician and the radiology clinic if you are pregnant, think you may be pregnant, have kidney problems, have had previous contrast reactions, or have implants or devices.

Costs and billing: what patients should expect

Costs vary widely depending on the scan type, whether the clinic bulk bills, and whether the scan is covered under Medicare arrangements in your circumstances. Some imaging services have a gap fee, particularly for certain MRI types or specialised imaging. Public hospital imaging pathways can be different from private clinics.

Before attending, it's reasonable to ask the radiology clinic about fees and whether there will be out-of-pocket costs.

What happens to the results?

After your scan, a radiologist reviews the images and produces a report. The report is typically sent to the referring doctor. Your doctor then interprets the results in context of your symptoms and examination, and discusses next steps with you. Sometimes imaging shows an “incidental finding” that may not be related to your symptoms, which is another reason results should be reviewed with a clinician rather than interpreted alone.

What if imaging is normal but symptoms continue?

Normal imaging can be reassuring, but it doesn't always mean “nothing is wrong”. Many conditions are functional, inflammatory, or early-stage and may not show on imaging. If symptoms persist, follow up with your clinician. They may recommend conservative treatment, further investigations, or specialist review depending on the clinical picture.

Privacy and radiology

Radiology referrals and imaging reports contain sensitive health information. Radiology providers and clinics are expected to handle health data securely and send results to the appropriate clinician. You can ask where your report will be sent and how it will be stored. If you have privacy concerns, discuss them during your consultation.

For broader privacy guidance, read Medical Certificates and Patient Privacy.

How Dociva can support radiology referrals

Dociva is designed around clinically appropriate telehealth and clear documentation. Where imaging is clinically appropriate, clinicians may provide radiology referral documentation based on assessment and professional judgement, and guide you on preparation and follow-up so results can be reviewed and acted on safely. If you want updates during pre-launch, use pre-launch sign-up.

Frequently Asked Questions (FAQs)