Doctor insights on:
Does An Eeg Use Radiation
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
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
EEG: An EEG is a test that records the various brain waves emitted from the brain. The test is done by placing tiny electrodes all around the head and scalp, and recording the electrical activity emitted by the brain and recorded by tracing the waves onto recording paper. ...Read moreSee 1 more doctor answer
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 moreSee 2 more doctor answers
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
Structure/function: An MRI looks at the structure of the body by using magnetic fields. You lie quietly on a table inside a donut-shaped magnet. Sometimes IV contrast is used to bring out the detail in certain structures. An eeg looks at brain function. Wires are placed on the scalp using an adhesive paste, and you lie quietly while an machine records the electrical signals generated by brain activity. ...Read more
Hard to say: You offer no information that would make me believe your daughter would need an eeg, with ot without a cold. If you have specific information that can be reviewed, please start over and submit it for review. Site questions are not linked so you must start over with basic information and a specific question. ...Read more
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- Does the eeg tracing change if the patient is thinking about different things?
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