A benefit of MRI over CAT scans for brain imaging is MRI
a. shows moving pictures of the brain’s function
b. is not as constricting, so people with claustrophobia fare better
c. does not involve exposure to radiation d. gives valuable information about brain function After learning this content, you are being tested on it with a multiple-choice question.
The correct answer and explanation is:
MRI vs. CAT Scan for Brain Imaging
The correct answer is C. MRI does not involve exposure to radiation.
Magnetic Resonance Imaging (MRI) and Computerized Tomography (CAT) scans are both used in brain imaging, but they differ significantly in how they work and their associated risks. MRI uses magnetic fields and radio waves to create detailed images of the brain, while CAT scans use X-rays to generate images. A major advantage of MRI is that it does not involve exposure to ionizing radiation, which is a concern with CAT scans. Ionizing radiation can pose long-term health risks, particularly with repeated exposure, making MRI a safer option in certain contexts, especially for patients requiring frequent imaging.
Process Used During a Test
The correct answer is A. Recall.
Recall is the process of retrieving information from memory without any external cues. In a test setting, when you are asked to recall facts or concepts, you are tapping into your long-term memory and bringing that information into conscious awareness. The other options, such as olfactory sensory register or storage, are related to different stages of memory. Olfactory sensory register deals with smells, and storage is about maintaining information in memory. Retrieval, though similar to recall, refers to the overall process of bringing information out of memory, whereas recall specifically focuses on actively bringing details into consciousness.
By utilizing recall during a test, you are actively retrieving the information you’ve studied to answer questions accurately. In this case, you would be recalling facts about the difference between MRI and CAT scans and also applying the memory process to answer the multiple-choice question.