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Doctor insights on: Does An Eeg Use Radiation

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Does an EEG use any radiation?

Does an EEG use any radiation?

No: Merely, a recording of brain electrical activity, and no electricity goes to the patient, only a recording. ...Read more

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Gamma Rays (Definition)

This is light of extremely short wavelengths typically produced either among the stars / in cosmic rays or by radioactive element decay. Gamma rays form the background of normal radiation in which we all live; it is substantially greater than the exposure we get from imaging scans or should get from ...Read more


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How reliable is an eeg?

VAGUELY ACCURATE: An EEG is a recording of brain electrical activity taken over the scalp, over about 45 minutes. This brief period may completely miss many paroxysmal events and provide a false negative/normal result. Work with direct electrodes implanted into brain have convincingly demonstrated far more pathology than external recordings. So, basically "hit or miss" issues, and better to clinically assess. ...Read more

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What is an electroencephalogram (eeg)?

Tests brain activity: A noninvasive, painless exam where electrodes are placed on scalp and electrical activity is recorded via computer. Patient usually sits in a chair, or lays on a stretcher. Indications include seizures and other causes of brain dysfunction. May be used to both diagnose and monitor a seizure disorder. ...Read more

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Can an EEG detect tumors?

Not directly: Eeg measures the activity of brain cells, not tumors. If the tumor is effecting a significant number of brain cells, the eeg may be abnormal. Some tumors cause enough irritation of the brain to cause seizures. These seizures can be located in the brain by eeg. Some tumors will have no effect on the eeg. ...Read more

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What are the characteristics of an asperger's eeg?

What are the characteristics of an asperger's eeg?

Aspergers: Here are 2 articles i found. http://www.sciencedaily.com/releases/2012/06/120625203010.htm http://www.Futurehealth.Org/populum/pageproduct.Php?F=asperger-s---add--differences-and-simila-092007-76.Html. ...Read more

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How does caffeine affect an EEG scan?

How does caffeine affect an EEG scan?

Very minimal: Caffeine is a stimulant, and if you are too awake, you may have trouble relaxing, and a desired sleep tracing may be difficult to obtain, BUT otherwise little if any profound effect. ...Read more

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Do people with dementia have normal eeg's?

Do people with dementia have normal eeg's?

Generalized slowing: People with most types of dementia would have eegs with generalized slowing. There can also be some seizure activity but not universally. ...Read more

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What does an EEG diagnose that an MRI can't?

What does an EEG diagnose that an MRI can't?

Brain activity: Eeg measures brain electrical activity by using scalp electrodes. Eeg is more sensitive and gives a better global look at brain function. Typical MRI does not assess brain function. Functional MRI can indirectly measure brain activity also by measuring oxygen delivery to portions of the brain. ...Read more

Dr. Jeffrey Cohen
381 doctors shared insights

Eeg (Definition)

An electroencephaolgram (eeg) is a test that uses wires on the scalp to measure electrical activity produced by the brain. It is used to assess cerebral activity, and can be very helpful in the diagnosis and treatment of seizures as well ...Read more