Final answer:
A computed tomography (CT) scan is a sectional radiographic examination of the kidneys that can reveal tumors or stones. It is considered the gold-standard diagnostic test for the detection of kidney stones.
Step-by-step explanation:
A sectional radiographic examination of the kidneys that can reveal tumors or stones is called a computed tomography (CT) scan. CT scans are a noninvasive imaging technique that use computers to analyze cross-sectional X-rays in order to produce detailed images of the kidneys. This test is considered the gold-standard diagnostic test for the detection of kidney stones. Computed tomography is widely used in medicine for various diagnostic purposes.