If a patient cannot provide informed consent due to cognitive impairment, what is the appropriate course of action?

If a patient cannot provide informed consent due to cognitive impairment, what is the appropriate course of action?

• A. Involve supervisor, re-explain risks, obtain fresh consent from a legally authorized representative if necessary, and document.
• B. Proceed with imaging if a surrogate decision-maker cannot be reached.
• C. Ignore the consent issue and perform the exam anyway.
• D. Cancel all imaging until formal consent is obtained.

Answer: (D)