Final answer:
Among the given statements, the true one is that the physician will review the medical records of 50 patients requiring MRI scans for clinical treatment and research purposes. The physician will use a coding system to maintain patient confidentiality, and the key will not be stored in the medical records but securely elsewhere.
Step-by-step explanation:
The statement that is true among the options provided is: 1) The physician will review the medical records to explore factors related to 50 patients who require MRI scans. This research involves looking into medical records for clinical treatment purposes as part of standard clinical care. The physician plans to use a coding system to protect patient confidentiality, and they will be able to identify the patient information using this system. However, the key to the coding system will be stored securely and separately, ensuring the privacy of patient data. This type of research requires a balance between the costs of treatments and diagnoses, the quality of life for the patient, and the risks to individual privacy.