Brain mapping is a technique where the biological quantities of a human brain are represented as spatial quantities resulting in maps. As with many other medical technologies, brain mapping is fast-evolving as well. Among several uses, brain mapping is chiefly used while performing surgery on the brain.

When surgery is to be performed on the brain such as surgery for epilepsy, the surgeon would want to comprehend how the brain areas are affected by seizures. The surgical intervention is meant for removing as much as seizure focus as possible while preserving crucial functions like understanding, speech, vision, movement, and sensation.

Why is brain mapping performed?
Brain mapping is a process which helps in identification of functions of various parts of the brain. Mapping the brain by stimulating different areas of the brain areas can aid in creating a map for a particular person. The map allows the doctor in understanding what parts of the brain are responsible for performing critical functions including sensation, movement, speech and other functions.

Which functions of the brain can be mapped electrically?
Typical areas of the brain which have motor, language, visual and sensory functions are needed to be mapped. When current is applied to a single area at a time, the doctor understands which part of the brain is responsible for which function.
When the patient is not able to speak due to the current, then the area is likely to be crucial for language function. If the limbs, face or trunk of the patient stop moving as the current passes, the area that is tested is responsible for movement. On the other hand, if the individual experiences tingling, numbing, and other sensations when the current is applied, it means that a sensory region is discovered.

How is electrical brain mapping performed?
Electrical brain mapping for guiding brain surgery for epilepsy can be performed in two distinct processes: directly during the surgery or in a two-stage procedure.

Two-stage procedure:
In the first stage of the process, the surgeon creates an opening in the skull which helps in exposing the surface of the brain. Small electrical contacts or electrodes are placed on the brain surface even though no brain tissue is removed. As soon as the electrodes are in the right position, the scalp is closed. The electrodes not only record the seizure of the patient electrically but also allow mapping of various areas of the brain. The last stage is surgery where abnormal brain tissues are removed.

Brain mapping process during surgery:
Electrical brain mapping may also be performed during the surgery which exposes part of the brain. This is termed as intraoperative brain mapping since it occurs while performing the main operation. The process of mapping may last for an hour to several hours at a stretch.

Brain mapping is also used to diagnose neurodegenerative diseases like Alzheimer s and Parkinson s. In these cases, the brain map shows extreme shrinkage of the brain due to tissue loss.

Brain Mapping Surgery - Why It Is Performed?

The sciatic pain caused due to a lumbar herniated disc can radiate down your legs and may make you immobile. It is quite common for a herniated disc to press against a nearby nerve and inflame, leading to pain radiating along the length of the affected sciatic nerve. For getting relief from lumbar herniated disc pain, you need to become active. Daily hamstring stretches are considered to be an effective way to tackle such pain if you do them regularly. 

Here are three important hamstring stretches which will help you in strengthening your hamstring muscles:

Seated chair stretches: This stretch is perfect for people whose mobility is limited or for those who have unusually tight hamstrings. It is carried out in a sitting position. While performing this stretch, you have to sit on a chair with another chair placed across. By resting one foot on the ground and the other on the second chair, you need to straighten your back and lean forward over the leg which is extended. Once you feel a stretch in the upper and rear thigh, you should be in that position for at least 30 seconds. You should switch legs and repeat the stretching exercise thrice for each leg.
Towel hamstring stretch: If you like stretching while lying down, this stretch is an ideal option for you. For performing a towel hamstring stretch, you have to lie down on the floor and keep one leg flat. Tighten your abdominal muscles while you lift the other leg and keep it straight. You should wrap a belt around the elevated leg s instep and use it for pulling back the leg towards you. Hold the position for around 30 seconds when you feel a stretch.
Wall hamstring stretch: This stretch is for people who find the towel hamstring stretch hard to execute. For such people, extra stability can be attained by taking help of a solid surface such as a door jamb or a wall. You can rest the raised leg against the wall for support. You need to lie on the floor near a wall corner and leave one leg straight while placing the other against the wall. Your hips should be on the floor.
While you do stretches of any kind, you should only stretch as far as you are comfortable. You must not stretch to a point which causes pain. These hamstring stretches are quite safe, but you should avoid them in case of any sudden, acute pain.

Lumbar Herniated Disc Pain - 3 Hamstring Stretches for it

Ultra sound is commonly known as sonography. It is a process of reproducing ultrasound images of soft tissues of a particular body part and other organs on the computer screen with the help of the echoes of the sound waves produced by the transducer, a high-frequency generating instrument.
Ultra sound is commonly used during the different stages of pregnancy to denote the foetal health, the foetal sex, date of delivery, birth defects etc. However, in recent times, the ultra sound has also been associated with the diagnosis of other body parts such as the eyes, heart, gall bladder, liver, ovary, uterus, kidney, uterus, testicles, and ovaries. Ultra sound has also been useful in conducting biopsies for suspecting cancer patients, although not all of the cancers are detected by this imaging process. 3D & 4D ultrasound imaging are useful for looking at a particular body portion with much more precision and in slow motion respectively.

The advantages of ultra sound are:
1. The process of ultrasound imaging is a painless and a fast one. It does not require any insertion of needles or similar objects to denote the problems of the concerned body part.
2. The process is more convenient as compared to other similar imaging processes like MRI, mammogram and x-rays as they can capture images of the soft tissues, blood flow & cysts more clearly than the other processes.
3. The process is free of any harmful effects as there are no chances of exposure to radiation as compared to similar processes such as CT scans or X-rays.

Ultrasound - How it is Beneficial over Other Imaging Techniques?

Collectively grouped under the Ewing sarcoma family of tumors, Ewing's sarcoma is the second most common primary bone cancer occurring predominantly in children and in adolescents. Very rarely is it experienced in adults above the age of 30.

Typically forming in the bones of the chest, pelvis, head, back or trunk and in the long bones of the arms and legs, Ewing's sarcoma is believed to originate in certain kinds of primitive cells. When it begins to affect similar kind of cells found outside the bone, it is usually called an extraosseous Ewing's sarcoma.

Causes
1. Similar to all types of Ewing tumors, Ewing's sarcoma is generally caused by an alteration in a certain cell compelling a gene named EWS found on chromosome no. 22 to move over to a DNA section on any one of the surrounding chromosomes resulting in the activation of the EWS gene.
2. While it is not a hereditary condition, it usually occurs after childbirth, but no substantial evidence has been found as to why it happens so.

Symptoms
Symptoms of Ewing's sarcoma may include:
1. Swelling and pain especially in the arms, legs, back, chest or pelvis
2. Swelling accompanied by joint immobility
3. A bone breaks having no apparent cause
4. Swelling which may or may not be accompanied by a warm, tingling sensation
5. Fever resulting from unknown causes
6. Lumps or bumps which do not subside over time
7. Abnormal weight loss
8. High levels of fatigue
9. Tumors which have spread over to the lungs may cause shortness of breath
10.Tumors spread over to the spine may cause weakness or even paralysis.

Because the symptoms of Ewing's sarcoma can hardly be distinguished from symptoms caused by other infections or injuries, an early diagnosis is absolutely necessary for a successive treatment.

Causes and Symptoms of Ewing's Sarcoma

Bone cancer is a cancerous tumour in the bone, destroying the normal bone tissues. Tumours on bone tissues are not always cancerous or malignant, they are mostly benign. Primary bone cancer is when the malignant tumour begins to form in the tissues of the bones, but when these cancerous cells spread to other body parts like breasts, prostate or lungs, it is called metastatic cancer. Primary bone cancer is less common than metastatic cancer.

Bone cancer can be of three different types:

Osteosarcoma: In this case, the malignant tumour arises from the osteoid bone tissue. This occurs mainly in the upper arm and knee areas.

Chondrosarcoma: In this case the cancerous cells form in the cartilaginous tissues, causing a lot of pain. This occurs mostly in the pelvic area.

The Ewing sarcoma generally arises in the bone but it can also form in the soft tissues. Other kinds of soft tissues affecting cancerous cells are known as soft tissue sarcomas.

Causes-

There aren t many clear defined causes; however, several factors have been identified by researchers.

Osteosarcoma is seen to occur more frequently in people who have been through a high external radiation therapy dose.

In people who have frequently been treated with anticancer medications, children tend to be most affected.

Heredity may be an adding cause, although the percentage of hereditary transfer of cancer cells is very low.



People with hereditary bone defects or implants have a higher chance of acquiring bone cancer.

Symptoms-

The most common and saddening symptom of bone cancer is painful, although not all bone cancers cause pain. Unusual or persistent swelling or pain around a bone maybe a red flag for bone cancer. In case of a situation like this, immediate doctor s opinion is required.

Diagnosis-

Usually, diagnosis of a bone cancer can be made using X-rays; for example, a bone scan, a computed tomography scan, a magnetic imaging procedure positron emission tomography, and an angiogram. Biopsy and blood tests are also helpful in bone cancer diagnosis.

Treatment-

The size, location and stage of cancer, age, and health of the person decide the kind of treatment that should be given to the patient. Various treatment options include chemotherapy, radiation therapy and cryosurgery.

Survival-

The combined survival rate of all sorts of bone cancers is 70%. This percentage may vary with the type of bone cancer and also its stage.

An Overview Of Bone Cancer

The pain which a person experiences as a result of having a herniated disc can be quite debilitating, to tell you the truth. However, taking into due account the fact that all a person in such a situation would want would be to be up and running as soon as possible.

In order for this to happen, as would be expected, he or she would need to go through the options which are available for treatment of a herniated disc. There are various types of herniated disc treatments which are available though it can be said that conservative treatments are preferred as these treatments do not require surgery to be carried out on the person who is suffering from the issue.

The course of this sort of treatment lasts somewhere between one month to one and a half months. The aim of conservative treatment is to reduce or minimise the pain that is automatically associated with a herniated disc. There is a strategy to help a person improve by which he or she is provided with medicine for the purpose of pain relief while physiotherapy is made use of to make the underlying condition better.

Surgical treatment may be required, if the case is such that the person has lost a great degree of function and is in pain that seems to be pretty much unbearable. `If the person has a lumbar herniated disc, then the conservative treatment for this sort of case would require him or her to apply ice and heat from a warm source to provide relief to the area. If the pain is very bad yet the person is determined not to undergo surgery then the answer would be to consume some oral steroids or narcotic pain medications. One should surely keep in mind that this is only to carried out as per the prescription of a doctor who is trained and experienced to a sufficient degree.

If surgery is required for this sort of herniated disc, then it is likely to be a lumbar decompression surgery which aims to allow for the growth of the spine back to health as a result of removing the herniated disc. When it comes to cervical herniated disc treatment, conservative solutions include using drugs like ibuprofen and physical therapy; similar to solving lumbar herniated discs. However, surgical treatment for cervical herniated discs warrants anterior cervical decompression; where the disc is removed from the front of the neck.

 What Therapy Is Best For Herniated Disc?

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