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For this discussion board, provide an overview of each of the following types of imaging/assessment measures:
1. Computerized Tomography (CT)
2. Magnetic Resonance Image (MRI)
3. Functional Magnetic Resonance Image (fMRI)
4. Positron Emission Tomography (PET)
5. Single Photon Emission Computed Tomography (SPECT)
6. Electroencephalogram (EEG)
Which imaging technique would you select if you suspected a brain tumor? Why?
The following article may be helpful in answering this discussion board:
Camprodon, J.A., & Stern, T.A. (2013). Selecting neuroimaging techniques: A review for the clinician. The Primary Care Companion for CNS Disorders, 15(4), 12f01490. doi: 10.4088/PCC.12f01490
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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3869600/
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Computerized tomography:
According to the assigned book in this class it is commonly known as a CT scan where the “patient’s head is placed in a large doughnut-shaped ring. The ring contains an X-ray tube and, directly opposite it (on the other side of the patient’s head), an X-ray detector” (Carlson & Birkett, 2016, p. 130). There is an x-ray beam that scans the head in every angle. The information gathered from these beams are made into pictures of the skull. The goal of this method of brain scanning is to find the location of a lesion in the brain.
Magnetic Resonance Image (MRI)
This is very similar to a CT scan by finding the location of lesions in the brain.  The MRI finds slices in the brain, but with better detail in contrast to the CT scan. They use a magnetic field and radio waves to find the lesion location. Instead of using x-rays, the MRI uses a magnetic field . Here the MRI analyzes the signal taken by the magnetic field and then pictures are prepared of slices of the brain.
Functional Magnetic Resonance Image (fMRI)
An fMRi records the metabolic activity happening in regions of the brain. This type of scan measures measures the brain’s regional metabolic activity of living. It detects blood flow and oxygen levels.
Positron Emission Tomography (PET)
This type of scan “visualizes activity of brain regions that are metabolically active in a living brain” (Carlson & Birkett, 2016, p. 141). The PET uses radioactive 2-DG as well. This type of scan also shows how one’s tissues and organs function and also has the ability to show traces of certain diseases.
Single Photon Emission Computed Tomography (SPECT)
This type of scan looks at blood flow to tissues and organs throughout the body. The types of tracers used are  iodine-123, technetium-99m, xenon-133, thallium-201, and fluorine-18.
Electroencephalogram (EEG)
These can often be described as writings of electricity from the head. This is often used to watch the stages of sleep and to diagnose epilepsy. This is because sleep patterns are associated with electrical activity. This test happens when an experimenter attaches electrodes to the scalp for the purpose to monitor the brain’s activity.

References
Lam, P. (2018, July 24). Mri scans: Definition, uses, and procedure. Retrieved January 21, 2020, from https://www.medicalnewstoday.com/articles/146309.php
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Devlin. (2018, October 08). What is functional magnetic resonance imaging (fmri)? Retrieved January 21, 2020, from https://psychcentral.com/lib/what-is-functional-magnetic-resonance-imaging-fmri/
(Links to an external site.)
Mayfield Brain & Spine. (n.d.). SPECT scan. Retrieved January 21, 2020, from https://mayfieldclinic.com/pe-spect.htm
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Carlson R., & Birkett, M. A. (2017). Physiology of behavior. Harlow: Pearson.