Abdominal ultrasound for kidney stones

It uses sound waves to create images of the kidneys and bladder. Very small stones or stones within the ureter may be difficult to see, so a normal scan does not always explain ongoing stone-like symptoms.

The sonographer looks for a visible stone, swelling of a kidney caused by backed-up urine, and changes in the bladder. The report may describe the stone's location and approximate size if it is seen. These details help the clinician judge whether observation, symptom control, or further imaging is appropriate.

Ultrasound findings must be interpreted alongside the pattern of pain, urine symptoms, examination, and laboratory results. A different test may be suggested when symptoms remain concerning despite an unclear or normal ultrasound.

Follow the imaging centre's instructions about eating, drinking, and arriving with a full bladder; the preparation depends on which organs need assessment. Wear clothing that allows easy access to the abdomen. During the scan, gel is placed on the skin and the transducer is moved across the abdomen and sides.

Afterwards, confirm who will explain the report and whether urine or blood testing is also needed. Continue any prescribed treatment as directed rather than changing pain medicine or other medicines based only on the scan images.

Seek urgent medical assessment for severe or worsening side or abdominal pain, fever or chills, repeated vomiting, faintness, confusion, difficulty passing urine, or blood in the urine with feeling very unwell. Pain with fever or reduced urine can signal infection or obstruction and should not wait for a routine scan appointment.

Ask whether the ultrasound showed a stone, kidney swelling, or another possible cause of symptoms; whether the bladder was adequately assessed; and what follow-up is needed if pain continues. You can also ask which symptoms should prompt immediate reassessment and how the result affects your current treatment plan.