Final answer:
The correct answer is D, which includes all suggested instructions to the patient. These ensure thorough preparation for the CT scan, cover safety aspects, and are essential for acquiring high-quality images.
Step-by-step explanation:
Before a CT examination, it is crucial to provide comprehensive instructions to patients to ensure their safety and the quality of the imaging results. The first step is describing the examination, which involves informing the patient about the area of the body to be scanned. This prepares the patient for what to expect and helps reduce anxiety. Secondly, the process of contrast administration must be explained if contrast agents are to be used.
Contrast agents can enhance the visibility of blood vessels, tissues, or specific organs, making it essential for the patient to understand why they are needed and how they will be administered. Lastly, any necessary breathing instructions need to be given clearly and precisely. Proper breathing techniques can be vital during the scan to ensure clear images are obtained, and to prevent the need for image retakes, which could increase the patient's exposure to radiation. Therefore, all three components are indispensable for a successful CT scan procedure.