Final answer:
The exact dosage of radiation during a 12-second fluoroscopy exposure is not provided, but it's most likely on the order of millirads based on typical diagnostic levels. Additional information from the syllabus is required to give a precise answer.
Step-by-step explanation:
The question relates to the field of radiation therapy in medicine, specifically referring to the dosage of radiation a patient receives during a procedure using fluoroscopy. In medical terms, radiation dose is typically measured in units such as rads, grays (Gy), and sieverts (Sv). The provided information does not give a direct answer to the dose per "look" or 12-second exposure in fluoroscopy; however, we can reference standard dose ranges for diagnostic procedures. Generally, a 10-mSv fluoroscopy session might equate to about 1 Gy depending on the specific RBE (relative biological effectiveness). It is important to note that this is an approximation and actual doses can vary.
To provide an answer, additional specific information from the syllabus or fluoroscopy equipment specifications would be required. Without this data, we can hypothesize that typical diagnostic levels are on the order of millirads to several rads, making options 2 (400 millirads) or 3 (5 millirads) more likely for a single 12-second "look", given the regular safety standards and dose reduction techniques used in fluoroscopic procedures.