Final answer:
A CT scan with intravenous contrast dye is the imaging technique used to view the urological system. It provides detailed X-ray images for diagnosis, including of kidney stones, and contrasts with techniques like Nuclear Medicine Imaging that utilize radiopharmaceuticals for different diagnostic visualizations.
Step-by-step explanation:
The diagnostic tool that involves the use of intravenous dye and radiological films to view the urological system is called a Computed Tomography (CT) scan, sometimes referred to as a CAT scan. This imaging technique constructs detailed X-ray images that allow for the visualization and assessment of the urological system, particularly useful in the diagnosis of conditions such as renal calculi, commonly known as kidney stones. A contrast dye may be used to provide clearer pictures of the structures within the urinary tract, enhancing the diagnostic capabilities of the scan.
Another imaging technique that utilizes radiopharmaceuticals to reveal metabolic and physiological functions in tissues is Nuclear Medicine Imaging. In this technique, a radioactive substance is injected into the body to trace its distribution and concentration in certain organs, providing valuable information for diagnosis. For instance, radioactive iodine can be used to image the thyroid gland for diagnostic purposes, and gallium-67 is useful in cancer imaging.