Which of the following is a disadvantage of magnetic resonance imaging MRI )? Quizlet?

Which of the following is a disadvantage of magnetic resonance imaging (MRI)? It is unsafe for individuals with metals in their bodies. Identify a technique that shows which regions of the brain are required for given tasks. Which of the following is a characteristic of plasticity in the central nervous system?

Is magnetic resonance harmful?

A. Magnetic resonance imaging, or M.R.I., is considered one of the safest technologies for looking deep inside the body, because it doesn’t carry the radiation risk of X-rays or PET scans. “Over all, M.R.I. is a very safe test,” said Dr. Max Wintermark, chief of neuroradiology at Stanford University.

Which of the following is a disadvantage of functional magnetic resonance imaging fMRI )?

The disadvantage of fMRI is in its poor time resolution of approximately six seconds and is therefore too slow for tracking single or clusters of neurons in real-time. This is because the change in blood flow takes several seconds to catch up with neural activity.

Which of the following is a primary disadvantage of naturalistic observation?

List of the Cons of Naturalistic Observation. 1. It can be challenging to control for outside variables. Perhaps the most significant disadvantage of naturalistic observation is that researchers can sometimes struggle to determine what the exact cause of behaviors or choices is due to the presence of outside variables.

What are the side effects of contrast dye after a MRI scan?

Mild reactions include:

• nausea and vomiting.
• headache.
• itching.
• flushing.
• mild skin rash or hives.

What is an advantage and disadvantage of fMRI?

The big advantage of fMRI is that it doesn’t use radiation like X-rays, computed tomography (CT) and positron emission tomography (PET) scans. Yet fMRI also has its disadvantages. First, it’s expensive. Second, it can only capture a clear image if the person being scanned stays completely still.

What is one disadvantage of MRI as a brain imaging technique?

Expensive to use. Cannot be used in patients with metallic devices, like pacemakers. Cannot be used with uncooperative patients because the patient must lie still. Cannot be used with patients who are claustrophobic (afraid of small places).

What is the main disadvantage of laboratory observation?

An advantage to laboratory observations is that the researchers who are conducting the test can control certain aspects and have all the necessary specialized equipment. One disadvantage in a laboratory observation is that the behavior of the participant might not be the same was it would be in a natural setting.

Which of the following is a disadvantage of naturalistic observation quizlet?

Which of the following is considered a disadvantage of naturalistic observation? It does not identify the cause of observed behavior. they each have an equal chance of being assigned to either the experimental or control group. deduction from direct observation.

Why is an MRI magnetic?

When the body is placed in a strong magnetic field, such as an MRI scanner, the protons’ axes all line up. This uniform alignment creates a magnetic vector oriented along the axis of the MRI scanner.

Which of the following imaging techniques does not collect?

The technique which is used to look into the brain through an x-ray or an MRI does not gather information which is directly related to how a person functions. There is one more technique that is used to look into the brain and that is called PET scanning or positron emission tomography scan.

What are the disadvantages of having an MRI scan?

Disadvantages: MRI scan is done in an enclosed space and the loud noises that are made by the magnets can make some people feel fearful of being in a closely enclosed surface while they are having a MRI scan.

When is an MRI device MR unsafe?

Any device with an unknown MRI safety status should be assumed to be MR Unsafe. Adverse events for MRI scans are very rare. Millions of MRI scans are performed in the US every year, and the FDA receives around 300 adverse event reports for MRI scanners and coils each year from manufacturers, distributors, user facilities, and patients.

Is an MRI scan done in an enclosed space?

MRI scan is done in an enclosed space and the loud noises that are made by the magnets can make some people feel fearful of being in a closely enclosed surface while they are having a MRI scan.

What are the disadvantages of fMRI?

How fMRI Works. Yet fMRI also has its disadvantages. First, it’s expensive. Second, it can only capture a clear image if the person being scanned stays completely still. And third, researchers still don’t completely understand how it works. The biggest complaint from researchers is that fMRI can only look at blood flow in the brain.

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