What is a major concern when using x-rays?

Radiation exposure is indeed a significant concern when using x-rays, especially for certain populations such as pregnant individuals. X-rays utilize ionizing radiation to produce images of structures within the body, which can carry risks depending on the dosage and frequency of exposure. In pregnant patients, the concern primarily revolves around the potential effects on fetal development, as the developing fetus is more sensitive to radiation. Medical practitioners assess the necessity of taking x-rays against the possible risks to minimize any adverse outcomes.

The other options do not accurately represent the concerns associated with x-ray usage. For example, x-rays are well-known for their effectiveness in imaging bones, making them a standard practice for diagnosing fractures and other skeletal issues. Additionally, while there may be costs associated with imaging technologies, x-rays are generally considered one of the more cost-effective and quicker imaging modalities available, and they are commonly utilized in emergency situations due to their speed and accessibility.