What is the primary purpose of voiding cystourethrography?

Voiding cystourethrography is a diagnostic imaging technique that primarily evaluates the urinary tract, specifically focusing on the bladder and urethra during the voiding process. The procedure involves taking X-rays while the patient empties their bladder, which allows healthcare providers to observe the flow and any abnormalities in how urine travels through the urethra and how the bladder functions. This test is particularly useful for identifying issues such as urinary obstructions, reflux, or structural abnormalities within the urinary system, which can significantly impact urinary function.

Other choices, such as measuring blood pressure, diagnosing heart conditions, or analyzing respiratory function, clearly relate to different systems in the body and are not relevant to the urinary system. These choices highlight other important clinical assessments but do not pertain to the primary function or application of voiding cystourethrography.