CAMRT Radiography Practice Exam

What specifically is the role of a sensitometer?

1. Measuring temperature

2. Measuring exposure of photographic film

3. Echocardiography assessment

4. Radiation dose calculation

The correct answer is: Measuring exposure of photographic film

The role of a sensitometer revolves around measuring the exposure of photographic film. This device is crucial in radiography and photography, as it quantifies the amount of light or radiation that photographic film is exposed to. The sensitometer emits a controlled light source that exposes the film in a standardized manner, allowing for the determination of the film's sensitivity and the development process. By evaluating how the film responds to specific exposures, radiographers can assess the quality of film and ensure proper exposure settings are used in imaging procedures, leading to optimal image quality. The other options do not directly relate to the primary function of the sensitometer. For example, measuring temperature pertains to thermometers, while echocardiography is a specific imaging technique that assesses heart function, and radiation dose calculations are performed using different dosimetric equipment, not a sensitometer.