When should the x-ray exposure time be increased?

Increasing the x-ray exposure time is sometimes necessary for certain patient characteristics to ensure that the resulting images are of adequate quality. In the case of larger adults, their increased body mass may require a longer exposure time to penetrate the dense tissues effectively. Larger adults typically have more tissue and bone density compared to smaller individuals, which can absorb more radiation. Thus, extending the exposure time helps to ensure that the X-rays can pass through these tissues adequately, resulting in clear and discernible images for diagnosis.

Other patient factors, such as age or edentulous status, do not typically necessitate longer exposure times. For example, older patients may not always require adjustments, and edentulous patients have less bone to penetrate, often necessitating shorter exposure times. Conversely, very young patients may have less tissue density, further suggesting that longer exposure times might not be needed for them. Understanding these variables is essential in radiographic practices to achieve optimal imaging results while adhering to radiation safety principles.