What is the difference between MRI and MRS?
MRI gives information about the structure of the body (the distribution of water and fat), while MRS gives biochemical information about the tissues in the body. These techniques do not use X-rays and do not cause pain or discomfort.
What is the purpose of fMRI?
fMRI enables the detection of abnormalities of the brain, as well as the assessment of the normal functional anatomy of the brain, which cannot be accomplished with other imaging techniques.
What are the disadvantages of fMRI?
Disadvantages
- fMRI is expensive compared to other techniques and can only capture a clear image if the person stays still.
- Poor temporal resolution because of a 5-second lag between initial neural activity and image.
- May not truly represent moment-to-moment brain activity.
Why is fMRI so popular?
The popularity of fMRI derives from its widespread availability (can be performed on a clinical 1.5T scanner), non-invasive nature (does not require injection of a radioisotope or other pharmacologic agent), relatively low cost, and good spatial resolution.
What is the difference between EEG and fMRI?
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 are the advantages and disadvantages of fMRI?
Brain cells are one thing an fMRI can’t hone in on. The big advantage of fMRI is that it doesn’t use radiation like X-rays, computed tomography (CT) and positron emission tomography (PET) scans. If done correctly, fMRI has virtually no risks. It can evaluate brain function safely, noninvasively and effectively.
Which is better EEG or MRI?
In general, MRI is good at telling us where the lesion is, whereas EEG is good at separating normal and abnormal primarily cortical function. The topologic usefulness of EEG is limited, although it may be improved with computerization.
Why would a neurologist order an EEG?
Why It’s Done Most EEGs are done to diagnose and monitor seizure disorders. EEGs also can identify causes of other problems, such as sleep disorders and changes in behavior. They’re sometimes used to evaluate brain activity after a severe head injury or before a heart transplant or liver transplant.
What a neurologist can diagnose?
Neurologists specialize in studying and treating the brain and nervous system. They diagnose and treat problems that include Alzheimer’s disease, Parkinson’s disease, multiple sclerosis, stroke, amyotrophic lateral sclerosis (ALS), epilepsy, migraine, and concussion.
What tests do neurologists perform?
These tests may include one or more of the following:
- Blood and/or urine tests.
- Imaging tests such as an x-ray or MRI.
- A cerebrospinal fluid (CSF) test.
- Biopsy.
- Tests, such as electroencephalography (EEG) and electromyography (EMG), which use small electric sensors to measure brain activity and nerve function.
Can blood test detect neurological problems?
Blood tests can monitor levels of therapeutic drugs used to treat epilepsy and other neurological disorders. Analyzing urine samples can reveal toxins, abnormal metabolic substances, proteins that cause disease, or signs of certain infections.
What does a neurologist do on your first visit?
During your first appointment, a Neurologist will likely ask you to participate in a physical exam and neurological exam. Neurological exams are tests that measure muscle strength, sensation, reflexes, and coordination. Because of the complexity of the nervous system, you may be asked to undergo further testing.
What are the symptoms of nerve problem?
The signs of nerve damage
- Numbness or tingling in the hands and feet.
- Feeling like you’re wearing a tight glove or sock.
- Muscle weakness, especially in your arms or legs.
- Regularly dropping objects that you’re holding.
- Sharp pains in your hands, arms, legs, or feet.
- A buzzing sensation that feels like a mild electrical shock.
What is best painkiller for nerve pain?
NSAIDs, such as ibuprofen (Advil) or naproxen (Aleve), may be combined with other pain treatments and may help control breakthrough pain. Acetaminophen. Acetaminophen (Tylenol) may be used in combination with adjuvant analgesics to control neuropathic pain or may be used for episodes of breakthrough pain.
How do I reduce inflammation in my nerves?
There are a variety of ways a person can relieve the pain of a pinched nerve at home.
- Extra sleep and rest. Sleep is essential for a healing nerve.
- Change of posture.
- Ergonomic workstation.
- Pain relieving medications.
- Stretching and yoga.
- Massage or physical therapy.
- Splint.
- Elevate the legs.