Final answer:
Imaging centers offer multiple diagnostic services, including MRI and PET scans, to ambulatory patients, hence the statement is true.
Step-by-step explanation:
An imaging center is indeed a freestanding facility that provides various diagnostic services such as radiographic, magnetic resonance imaging (MRI), and positron-emission tomography (PET) services to outpatients, who are ambulatory patients. This is a true statement since these standalone centers are equipped with the necessary technology to conduct these examinations without requiring patients to be admitted to a hospital. MRI, as described, uses a magnetic field and radio waves to create detailed images without exposing patients to ionizing radiation. In contrast, PET scans utilize radiopharmaceuticals to detect and image functional processes such as blood flow and metabolic activities within the body, aiding in the diagnosis of diverse conditions. Therefore, answering the student's question, the statement provided is “a) True”.