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How it works
Ultrasound uses soundwaves to produce images of structures inside the body. These images can detect a variety of diseases and conditions. It doesn't use any radiation and is generally pain-free.
An Ultrasound scan can be used to examine most parts of the body, including:
- Abdominal and pelvic organs
- Joints, muscles and tendons
- Soft tissues (breast, scrotum and neck)
- Evaluating blood flow
What to expect
Ultrasound is a safe procedure which uses no radiation
You'll sit or lie beside the machine which looks like a TV screen with leads. Water soluble gel is applied, then a handheld transducer is placed on your skin with mild pressure and moved around. Sometimes ultrasounds are done internally such as trans-vaginal pelvic scans - the sonographer will explain the procedure and obtain consent prior to the examination. Once the scan is complete, you're free to leave.
Day of the scan
- Prior to arrival. Arrive 15 mins early to complete paperwork.
- Prior to scan. Gown if required.
- Approximately 20-30 mins. Ultrasound scan.
- After the scan. Final appointment with reception and time to go home.
- After scan. Images reviewed by radiologist and results sent back to referring Doctor.
Frequently asked questions
Why does my bladder need to be full for a pelvic ultrasound?
A full bladder pushes the uterus in a position where we can see it better, and brightens up the entire pelvis so that we can adequately visualize the uterus and ovaries. It also moves the intestines and bowel out of the way.
Is ultrasound better or worse than other modalities like CT?
Each modality images differently. Sometimes it is necessary to image with different modalities for the best diagnosis. An ultrasound is what your doctor has referred you for at this time. If additional imaging is needed, the radiologist will recommend it.
How does an ultrasound differ from an X-ray? Is it harmful?
Ultrasound uses sound waves, and no ionising radiation, and has no known significant risks.
Can I go home after an ultrasound?
The ultrasound scan itself should not cause you much pain, if any, and is generally non-invasive, so you don't need any recovery time. Most people can go about their normal business once they have finished the ultrasound examination.