American Society of Radiologic Technologist (ASRT) Practice Exam

The ________ is NOT a primary factor in the production of a radiograph.

1. milliamperage (mA)

2. time (seconds)

3. kilovoltage peak (kVp)

4. generator phase

The correct answer is: generator phase

The generator phase is indeed not considered a primary factor in the production of a radiograph. In radiography, the primary factors that directly influence the quality and quantity of the x-ray beam include milliamperage (mA), time in seconds, and kilovoltage peak (kVp). Milliamperage controls the quantity of x-rays produced and directly affects the density of the radiograph. Higher mA values result in increased exposure and a darker image. Time in seconds, which measures the duration that the x-ray exposure is taking place, also affects the overall density of the radiograph. Longer exposure times lead to more x-rays hitting the film or receptor, thus increasing image density. Kilovoltage peak is crucial for determining the quality and penetrating power of the x-ray beam. Higher kVp increases the energy of the x-ray photons, enabling them to penetrate denser body parts, which enhances image contrast. In contrast, generator phase refers to the design and type of x-ray generator used, which affects the efficiency and consistency of x-ray production but is not a primary variable that the radiologic technologist can adjust to directly influence the production of a radiograph during an exposure. Thus, it does not play a direct role in