Note: We do not offer pregnancy ultrasounds.
how ultrasound works

How Ultrasound Imaging Works: A Simple Guide

June 16, 2025

If you’ve recently been referred for an ultrasound, you’re not alone. Thousands of people across the Gold Coast undergo this common and safe medical test every week. But despite how routine it is, many patients still wonder how ultrasound works. What’s actually happening inside the machine, and how can it help with diagnosis?

At Capri Ultrasound, we understand that medical procedures can sometimes feel overwhelming. This article is designed to ease that anxiety by clearly explaining how ultrasound works in simple terms, no technical medical terms, just clear, honest information.

 

What Is Ultrasound Imaging?

Ultrasound imaging, also known as sonography, is a safe and non-invasive way for doctors to view what’s happening inside your body. Unlike X-rays, which use radiation, ultrasound uses high-frequency sound waves to create live images of your internal organs, tissues, or blood flow.

Here’s how it works: sound waves are sent into your body using a small device called a transducer. These waves bounce off your internal structures, and the returning echoes are picked up and transformed into real-time images on a screen.

It’s commonly used to check organs like the liver or kidneys, monitor pregnancies, or examine joints and soft tissue. If you’re searching for a trusted provider of ultrasounds near you, Capri Ultrasound is conveniently located and ready to help.

 

How Ultrasound Works (Step-by-Step)

To help you feel more at ease, here’s a step-by-step look at what happens during an ultrasound:

  • Application of gel: A water-based gel is applied to the area being examined. This helps the sound waves travel more effectively.
  • Use of a transducer: The sonographer gently moves a small handheld device over your skin.
  • Sound wave transmission: The transducer emits high-frequency sound waves that travel through your body.
  • Echo interpretation: These waves bounce off organs and tissues, and the returning echoes are captured by the transducer.
  • Real-time image generation: The echoes are processed by a computer to create live images, which the sonographer and doctor use for diagnosis.

The procedure is generally painless, takes around 10 -15 minutes, and doesn’t require any recovery time.

 

Types of Ultrasound Scans

Ultrasound technology can be used to examine many parts of the body, depending on your symptoms and referral. Common scan types include:

  • Pelvic & renal ultrasounds: These both require filling your bladder. A pelvic ultrasound is particularly useful for assessing reproductive organs. A renal ultrasound is also called, “urinary tract” or “KUB”, and is used for assessing the kidneys and bladder, and in men, the size of the prostate.
  • Abdominal ultrasound: Helps visualise the liver, gallbladder, kidneys, and pancreas to investigate pain or swelling.
  • Musculoskeletal ultrasound: This type of scan is designed to assess joints, muscles, tendons, and ligaments, ideal for sports injuries or chronic pain.
  • Vascular ultrasound: examines veins and arteries for blood clots (DVT), varicose veins and narrowing of arteries.
  • Small parts ultrasound: examines various organs like the thyroid for inflammation, infection and masses such as nodules.

Each scan is tailored to the patient’s needs and is performed by trained sonographers.

 

What to Expect During an Ultrasound

There’s usually very little preparation required. Depending on the scan type, you might be asked to wear loose clothing or arrive with a full bladder (commonly for pelvic and bladder scans). Some abdominal scans may require fasting for a few hours before your appointment.

When you arrive, a friendly sonographer will talk you through the process and make sure you’re comfortable. You’ll lie down while the scan is performed, the transducer will be moved over your skin with some pressure, but it shouldn’t hurt. You might hear a faint whooshing sound during Doppler scans (used to check blood flow), but most procedures are silent.

 

Costs & Accessibility

At Capri Ultrasound, we believe that essential diagnostic imaging should be affordable and accessible to everyone. That’s why unlike most local clinics, we offer bulk billing ultrasound Gold Coast services, so you won’t be out of pocket if you have a valid Medicare referral.

We accept all referrals, regardless of which doctor or clinic issued them, and we’re committed to short wait times and flexible appointment slots. Whether it’s your first scan or a follow-up, our goal is to provide high-quality imaging with compassionate care.

 

Why Choose Capri Ultrasound?

Choosing the right provider matters. At Capri Ultrasound, we pride ourselves on offering expert service backed by professionalism, clarity, and kindness. Our team of experienced sonographers is committed to making every patient feel comfortable and informed, from the moment you walk in to the moment you leave.

Whether you need a general scan, a pelvic ultrasound, or a more specialised musculoskeletal ultrasound, you can trust us to deliver accurate results and exceptional care. We’re centrally located on the Gold Coast so next time you’re googling ‘ultrasound Gold Coast’, Capri Ultrasound is here to help.

Still have questions? We recommend speaking with your GP about your referral or contacting us directly to book your scan.

For more information about the procedure, you can also visit Healthdirect’s guide to how ultrasound works, a reliable, government-run source of health information.

 

More on How Ultrasound Works in Everyday Diagnosis

Understanding how ultrasound works isn’t just useful for easing nerves, it also highlights how this technology supports accurate, timely diagnosis across a range of conditions. From examining veins and arteries to investigating unexplained pain, ultrasound plays a key role in everyday healthcare without the need for radiation or invasive procedures.

Understanding how ultrasound works can help reduce the stress that often comes with medical testing. No matter what scan you book in for, you can rest assured knowing the process is non-invasive and handled by skilled professionals. Capri Ultrasound is here to provide clear answers and high-quality imaging when you need it most. Contact us with your referral today

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