Quick answer
General ultrasound is a non-invasive imaging investigation that uses sound waves rather than ionising radiation. It can examine abdominal organs, the thyroid, or superficial structures depending on the clinical question. Findings are interpreted together with symptoms, examination, and other available investigations.
What is general ultrasound?
Ultrasound uses sound waves to examine organs and tissues without radiation.
When may it be recommended?
It may be recommended for abdominal pain, monitoring, thyroid evaluation, lymph nodes, superficial masses, or other clinical questions.
What happens during the service?
Gel is applied to the skin and the ultrasound probe examines the area. The result is discussed in clinical context.
How should you prepare?
- Confirm which area will be examined because preparation varies by examination.
- For some abdominal examinations, you may be asked not to eat for several hours beforehand.
- A full bladder may be required for selected examinations; follow the instructions provided.
- Bring previous ultrasound and imaging reports for comparison.
- Wear clothing that allows easy access to the area being examined.
What limitations and precautions matter?
- Image quality can be affected by the area examined, bowel gas, and individual anatomy.
- Ultrasound cannot answer every clinical question; laboratory tests, CT, MRI, or another investigation may be required.
- The result must be interpreted alongside symptoms and clinical examination.
Medical sources
Medical content: Dr. Teaha Cristina · Last editorial review: