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The PSMA PET scan represents one of the biggest advances in prostate cancer imaging
Understanding the PSMA PET Scan in Prostate Cancer Care
If you or a loved one has been recently diagnosed with prostate cancer, or are already living with it, your urologist may have recommended a PSMA PET scan.
This advanced imaging test plays an important role in understanding where prostate cancer is located and how best to manage it.
What is a PSMA PET Scan?
PSMA stands for Prostate-Specific Membrane Antigen — a protein found in high amounts on prostate cancer cells.
A PSMA PET scan combines positron emission tomography (PET) and computed tomography (CT) to create a detailed picture of the body.
A small amount of a radioactive tracer (on the Gold Coast, typically Fluorine-18 [F-18]) is injected into the bloodstream. This tracer attaches to PSMA proteins on prostate cancer cells, allowing the scan to detect even very small areas of disease throughout the body.
The PET part shows how the body’s tissues are functioning, while the CT part shows precise anatomical detail. When the two are combined, doctors can pinpoint not only where cancer is, but also how active it is.
Why It’s More Advanced Than Traditional CT or Bone Scans
In the past, staging prostate cancer relied on separate CT and bone scans.
However, prostate cancer can spread in three main ways:
Beyond the prostate capsule (local extension)
Through lymph nodes in the pelvis or beyond
To bones
A PSMA PET scan is both more sensitive and more specific, meaning it can detect smaller or earlier changes that CT or bone scans may miss. This leads to earlier diagnosis, more accurate staging, and more personalised treatment plans.
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When a PSMA PET Scan Is Used
After a New Diagnosis
At The Prostate Clinic, all men with a new prostate cancer diagnosis undergo a PSMA PET scan.For low-risk cancers (Gleason 6), the scan ensures no higher-grade cancer is missed elsewhere in the prostate.
For intermediate or high-risk cancers, it confirms whether the disease has spread beyond the prostate.
When Cancer Recurs
If PSA levels rise after prostate removal (radical prostatectomy) or radiotherapy, a PSMA PET scan helps identify where recurrence has occurred — whether locally, in lymph nodes, or in bones — guiding the next treatment steps.For Ongoing Screening in Certain Situations
Occasionally, when a man’s PSA remains high despite a normal MRI, a PSMA PET scan is used to rule out a hidden (“occult”) cancer. This approach reduces the chance of missing prostate cancer that may not appear on MRI alone.
How the Scan Works
The entire process usually takes around 90 minutes.
You’ll receive a small injection of the tracer and wait while it circulates.
The scan itself is done in a wide tunnel — less confined and quieter than an MRI machine.
There are minimal risks associated with the low-dose radiation.
The scan is FDA-approved and widely available across Australia.
Why This Matters
Since combining MRI and PSMA PET scanning, the number of unnecessary prostate biopsies has dropped significantly.
Better imaging means fewer invasive procedures, earlier detection, and more confidence in treatment planning — all while reducing anxiety for patients and their families.
In Summary
The PSMA PET scan represents one of the biggest advances in prostate cancer imaging. It helps:
Identify the exact location and spread of cancer
Guide treatment decisions more precisely
Detect recurrence earlier and more accurately
Reduce the need for unnecessary biopsies
If you’ve been advised to have a PSMA PET scan, know that it’s a safe and powerful tool that helps your medical team tailor care specifically for you.