Brain MRI
MRI technique is used to examine the brain as it helps to provide clear pictures of the parts of body that are surrounded by bone tissue. Detailed pictures of both benign and malignant abnormal growth of tumors in the brain can be obtained through brain MRI scan. The MRI scan is also indicative whether the tumor is spread to the nearly brain tissue or not. MRI scan can detect the abnormal tissues that grow during multiple sclerosis and the changes occurring during bleeding in the brain or if the brain tissue has suffered a stroke due to lack of oxygen. The functional magnetic resonance imaging is a relatively new procedure. This is used to measure the quick, tiny, metabolic changes that take place in an active part of the brain. The functional magnetic resonance imaging not only helps the radiologist to examine the anatomy of the brain but also to determine the precise part of the brain which is handling the critical aspects of speech, movement and sensation.
Multiple sclerosis
Multiple sclerosis or MS is an autoimmune disease that occurs when the myelin sheath that protects nerve cells is damaged. This leads to slowing of nerve impulses. Inflammation along the brain, optic nerve or spinal cord leads to nerve damage.
Those who have a family history of MS are more susceptible to this condition. The symptoms appear in episodes that relapse after days or weeks or even months. The episodes might be triggered by stress or fever.
Symptoms of Multiple sclerosis appear all over the body as they affect nerve cells. There is numbness and loss of balance, tremors in arms or legs, muscle spasms and difficulty in walking. There is an overriding feeling of fatigue. Patients suffering from MS might have eye discomfort with double vision or loss of vision. There might be painful spasms in the facial muscles and stool or urine leakage. The person might experience depressive feelings, slurred speech and difficulty in swallowing.
MS is diagnosed through brain MRI and spinal MRI. Spinal tap of cerebrospinal fluid is done to check for Multiple sclerosis. Medications to reduce the degradation caused by MS include interferon, Methotrexate, azathioprine (Imuran), intravenous immunoglobulin (IVIg) and cyclophosphamide (Cytoxan). Speech therapy and occupational therapy helps the patients to a large extent.
Cerebral aneurysm
Cerebral aneurysm occurs when a weakness in the blood vessel of the brain causes it to bulge. This can be congenital or caused due to injury. A few cerebral aneurysms might rupture especially in cases of hypertension. A person suffering cerebral aneursym might suffer loss of vision, double vision and headaches. There might be increased intracranial pressure and swelling of the optic nerve. Brain MRI or CAT are taken to ascertain presence and location and size of Cerebral aneurysm. Spinal tap might be done.
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