Is it safe for puppies and kittens?

Yes. Ultrasonography uses non-ionizing radiation (sound waves), unlike X-rays. It is completely safe for developing fetuses, which is why it is the standard for pregnancy checks.

What is A-FAST / T-FAST?

These are emergency acronyms. If your pet has been hit by a car, we perform a FAST scan (Focused Assessment with Sonography for Trauma). We aren't looking at the details; we are looking for "free fluid" (internal bleeding) in the tummy or chest. It takes 2 minutes and saves lives.

Can you see everything?

Not quite. Ultrasound cannot see through Gas or Bone. If a dog has a stomach full of gas (bloat) or we need to look inside the skull, Ultrasound won't work. In those cases, we switch back to X-rays or recommend a CT scan

Ultrasonography | Ormeau Vet

You might have heard us mention “Ultrasound” or “Sonography” interchangeably. While “Ultrasound” is the machine, Ultrasonography is the actual medical procedure—the art of using sound to create a map of the body.

At Ormeau Vet, this is one of our most advanced diagnostic tools. It allows us to do something X-rays can’t: see the body in motion.

It is essentially submarine technology for your pet. Here is the science behind how it works and why it is so effective for diagnosing complex internal issues.

Sonar for Soft Tissue

Ultrasonography works on the principle of Pulse-Echo Physics.

The probe (the wand we hold against your pet) sends out millions of high-frequency sound pulses per second. These sound waves travel through the body and bounce off tissues.

Fluid (like the bladder): The sound travels straight through. This appears Black on the screen.
Soft Tissue (like the liver): Some sound bounces back. This appears Grey.
Bone or Stone: The sound hits a hard wall and bounces back completely. This appears Bright White.

By measuring exactly how long it takes for the echo to return, the computer constructs a live, moving image of your pet’s insides.

The “Movie” vs. The “Photo”

The biggest difference between Radiography (X-ray) and Ultrasonography is Time.

Radiography takes a snapshot. It is a frozen moment in time.
Ultrasonography is a movie. It is Real-Time.

This distinction is critical. With Ultrasonography, we don’t just see the shape of the heart; we see it beating. We don’t just see the intestines; we see them contracting (peristalsis).

This allows us to diagnose functional problems—like a heart valve that isn’t closing properly or a section of the gut that has stopped moving—that would look perfectly normal on a still photo.

Why the “Shave” is Non-Negotiable

We know it can be a bit of a shock to pick up your fluffy dog and find they have a “reverse mohawk” on their belly! However, for Ultrasonography, the shave is scientifically necessary.

Ultrasound waves hate air. They cannot travel through the tiny pockets of air trapped between hairs. If we place the probe on fur, the sound waves scatter, and the screen is just “snow” (static).

To get the crystal-clear, diagnostic images required to spot a tiny tumor or a kidney stone, the probe must have perfect, airtight contact with the skin. The fur will grow back, but the diagnosis we get today could save their life.

The Operator’s Eye (The “Sonographer”)

Unlike an X-ray, which is somewhat standardized, Ultrasonography is operator-dependent.

The probe is like a flashlight in a dark room. You only see what you point it at. This means our Ormeau vet performing the scan needs a deep understanding of 3D anatomy and a steady hand to navigate between organs.

At the Ormeau vet clinic, our team is trained to recognize the “texture” of organs. We look for changes in the Parenchyma (the internal tissue).

Is the liver “mottled” (suggesting hepatitis)?
Are the kidneys “shrunken” (suggesting chronic disease)?
Is the intestinal wall “layered” correctly?

It is a meticulous search for clues that requires patience and skill.