Final answer:
Radiographic examination uses X-rays and gamma rays to detect discontinuities.
Step-by-step explanation:
The examination that uses X-rays and gamma rays to detect discontinuities is known most commonly as radiographic testing, which is frequently employed in various fields including medicine and engineering.
In the medical field, X-rays are widely utilized for imaging internal structures of the body, such as bones and certain organs, due to their ability to penetrate different materials. Gamma rays, with higher energy than X-rays, can be used to detect flaws in metal structures, a technique also known as gamma radiography. This process is comparable to how X-rays examine the human body.
In medical imaging, technologies like Computed Tomography (CT) scans use X-rays to produce cross-sectional views of the body, which aids in providing a more detailed three-dimensional perspective. Tomography, including methods like SPECT and PET, enhances the depth of information with the help of computer analysis, providing more precise localization of abnormalities within the body.