CAMRT Radiography Practice Exam

Which of the following techniques would help reduce motion artifacts in radiography?

1. Increased exposure time

2. Use of immobilization devices

3. Higher radiation dose

4. Shorter collimation

The correct answer is: Use of immobilization devices

Using immobilization devices is essential for reducing motion artifacts in radiography. When patients move during the exposure, even slightly, it can result in blurred images and degrade the quality of the diagnostic information. Immobilization devices help to securely hold the patient in place, minimizing any movement that may occur due to discomfort, anxiety, or involuntary actions. This improved stability allows for a clearer and more accurate radiographic image. Other techniques mentioned, such as increased exposure time or higher radiation dose, do not address the fundamental issue of patient movement. Longer exposure times may increase the chance of motion artifacts rather than eliminate them, especially if the patient is not immobilized. Similarly, using a higher radiation dose does not inherently resolve issues related to motion; it primarily raises health risks without guaranteeing improved image quality in cases of motion. Additionally, shorter collimation entails a reduction in the visible area of the image but does not impact the motion directly. Thus, employing immobilization devices is the most effective approach among the options provided to achieve clearer, more diagnostic images.