Patients who undergo sedation for an MRI should always be monitored with a:

A patient with limited English proficiency arrives for an MRI. They cannot fully understand your screening questions. What should you do?

A patient discloses that they are pregnant but do not want anyone else to know. The radiologist requests documentation of pregnancy status in the chart. What is the ethically correct choice?

During an MRI of the knee, the patient tells you the coil feels “hot.” What should you do next?

What is the normal/average rate of respiration for a healthy adult?

You discover a patient still has a transdermal medication patch on their back after they are already positioned in the bore. What should you do?

You see a coworker altering times on the MRI log to make it appear that safety checklists were completed even though they weren’t. Which ARRT ethical principle applies MOST directly?

In KNN classification, predictions are made by [blank1] vote of the k nearest neighbors. For regression tasks, KNN uses the [blank2] of the k nearest neighbors’ values. [response_blank1] [response_blank2]

Explain the fundamental difference between bagging and boosting ensemble methods. How does each approach reduce prediction error?

[blank1] impurity measures the probability of incorrectly classifying a randomly chosen element, with 0 representing a pure node. Decision trees are prone to [blank2] when they grow too deep and learn training data too well. [response_blank1] [response_blank2]