The nurse is conducting a staff in-service on renal ultrasounds. Which statement describes this diagnostic test?

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A renal ultrasound transmits ultrasonic waves through the renal parenchyma, allowing for visualization of the renal system without exposure to external beam radiation or radioactive isotopes. Computed tomography uses external radiation and sometimes contrast media to visualize the renal system. An intravenous pyelogram uses contrast medium and external radiation for x-ray films. The voiding cystourethrogram visualizes the renal system with injection of a contrast media into the bladder through the urethral opening and use of x-ray before, during, and after voiding.

The Nurse Is Conducting a Staff In-Service on Renal Ultrasounds