What are the four types of brain scans?
functional magnetic resonance imaging (fMRI) computerized tomography (CT) positron emission tomography (PET) electroencephalography (EEG) and magnetoencephalography (MEG)
What is a CT scan AP Psychology?
CT (computed tomography) Scan. a series of x-ray photographs taken from different angles and combined by computer into a composite representation of a slice through the body (also called a CAT scan)
What is EEG AP Psychology?
electroencephalogram (EEG) an amplified recording of the waves of electrical activity that sweep across the brain’s surface. these waves are measured by electrodes placed on the scalp.
What is the difference between fMRI and PET scan?
In fact, for a single scan, PET has a better signal-to-noise ratio (SNR) than fMRI. However, overall fMRI provides a clearer image as fMRI can be repeated multiple times due to its lack of radiation exposure. Indeed, this perhaps provides ample reason for the decline in PET use and the rise in fMRI use.
What are the different types of brain MRI?
Brain Scans
- Functional Magnetic Resonance Imaging (fMRI)
- T1-Weighted MRI.
- T2-Weighted MRI.
- Diffusion-Weighted MRI (DWI)
- Fluid -Attenuated Inversion Recovery MRI (FLAIR)
- Gradient Record MRI (GRE)
What are fMRI scans used for?
It may be used to examine the brain’s functional anatomy, (determine which parts of the brain are handling critical functions), evaluate the effects of stroke or other disease, or to guide brain treatment. fMRI may detect abnormalities within the brain that cannot be found with other imaging techniques.
What is the difference between fMRI and EEG?
As we have already noted, EEG signals are directly related to neuronal processing, whereas fMRI responses arise from subsequent changes in blood- oxygenation levels. There are other important differences as well that are rele- vant for combining the two types of data.
What is a PET scan brain?
A brain positron emission tomography (PET) scan is an imaging test of the brain. It uses a radioactive substance called a tracer to look for disease or injury in the brain. A PET scan shows how the brain and its tissues are working.
What is the difference between EEG and ERP?
Event-Related Potentials (ERPs) Event-Related Potentials (ERP) use similar equipment to EEG, i.e. electrodes attached to the scalp. However, the key difference is that a stimulus is presented to a participant (for example a picture/sound) and the researcher looks for activity related to that stimulus.
What is a gamma scan?
What is gammagraphy? Gammagraphy is an imaging technique that forms the basis of nuclear medicine. It uses special cameras that detect gamma rays to capture images of the inside of the patient’s body by tracing radioactive materials administered by the doctor as they pass through the body.
What is the difference between SPECT and CT?
A SPECT scan is a type of nuclear medicine test that uses a radiotracer (a special contrast agent), that is injected through your vein. A CT scan uses X-ray radiation to provide thorough images of the structures inside your body (anatomy).
Are MRI and fMRI the same?
While an MRI scan allows doctors to examine a patient’s organs, tissue, or bones, “an fMRI looks at the function of the brain,” Dr. Zucconi explains.
How many types of brain CT scans are there?
CT Angiography. CT Scan Arthrography. CT Scan Bones. CT Scan Brain/ CT Scan Head.