Final answer:
X-rays are used in CT scans due to their ability to penetrate the body based on specific attenuation characteristics of different tissues, creating detailed internal images for diagnosis while balancing patient safety with controlled exposure.
Step-by-step explanation:
X-rays are used in CT scans because they penetrate the body according to specific attenuation characteristics of each tissue. This property of X-rays allows them to create detailed images of the internal structures of the human body. Soft tissues appear as different shades of gray, while denser materials like bone show up as white, allowing physicians to diagnose a wide range of medical conditions.
Although X-rays are a form of high-energy electromagnetic radiation, their use in medicine is considered essential for diagnostic imaging. It is crucial to control the exposure carefully, as X-rays are capable of damaging cells and can lead to cancer if not monitored correctly. With modern technology, the intensity of radiation used is extremely low, balancing the need for clear images with patient safety.