Which two of the following would warrant the use of a grid? (select two)

The use of a grid is recommended when a part being imaged measures more than 10 centimeters and when high scatter is being produced.

When imaging larger body parts, such as those exceeding 10 centimeters, the amount of scattered radiation increases significantly. A grid helps to absorb this scatter, allowing for a clearer image by improving contrast. The grid works by allowing more of the primary radiation to reach the imaging detector while blocking a portion of the scatter, which is often more diffuse and can lead to a foggy appearance in the images.

In cases where high scatter is present, regardless of the size of the part, a grid becomes critical. High scatter radiation can obscure the detail needed for accurate diagnosis, and using a grid helps mitigate this issue, enhancing the overall quality of the radiographic image.

Understanding these two scenarios is crucial for radiologic technologists to ensure they produce high-quality images while minimizing patient exposure to unnecessary radiation.