Final answer:
Implementing standardized procedures to enable workers to speak up is a low-cost, quick, and effective change that would improve patient safety and foster a culture of safety and open communication in the radiology department.
Step-by-step explanation:
To address the issue of patients undergoing the wrong procedures and the lack of open discussion of mistakes in the radiology department, implementing standardized procedures to enable workers to speak up would be a low-cost, quick, and effective change. By establishing clear guidelines and encouraging a culture of safety and open communication, radiology technicians would feel empowered to raise their concerns and prevent errors from occurring. This change would not only help improve patient safety but also foster a more collaborative and accountable work environment.