Ask any experienced radiologic technologist what causes the most retakes, and the answer is almost always motion. Patient movement during the exposure whether voluntary or involuntary produces motion blur that degrades image quality and often necessitates a repeat exposure. Every repeat means additi …

In human radiology, it's been decades since staff routinely held patients in position during x-ray exposures. The practice is universally recognized as unnecessary and unsafe so technologists use positioning sponges, sandbags, immobilization devices, and communication with the patient to achieve pro …