You are going to radiograph the thorax of a dog. You need 10 mAs. Which of the following combinations of mA and time would be the most preferable to use in terms of avoiding any ar... You are going to radiograph the thorax of a dog. You need 10 mAs. Which of the following combinations of mA and time would be the most preferable to use in terms of avoiding any artifacts? Assume that your X-ray machine will allow you to select any of these combinations. a. 10 mA, 1 s b. 100 mA, 0.1 s c. 500 mA, 0.02 s d. 1000 mA, 0.01 s
Understand the Problem
This question is asking which combination of mA and time (while maintaining the same mAs) will minimize motion artifacts in a thoracic radiograph of a dog. Higher mA and shorter exposure times are generally preferred to reduce motion blur.
Answer
1000 mA, 0.01 s
The most preferable combination would be 1000 mA, 0.01 s because it uses the shortest time, which minimizes motion artifacts.
Answer for screen readers
The most preferable combination would be 1000 mA, 0.01 s because it uses the shortest time, which minimizes motion artifacts.
More Information
In radiography, using the shortest possible exposure time is crucial for reducing motion artifacts, which are especially problematic when imaging the thorax due to the respiratory movements of the patient. Higher mA settings allow for shorter exposure times while still achieving the desired mAs (milliampere-seconds).
Tips
Ensure that the product of mA and time (seconds) equals the required mAs. Always prioritize the shortest possible exposure time to minimize motion artifacts, especially in thoracic radiography.
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