What are the main methods for examining brain cancer?

What are the main examination methods for brain cancer? I believe many people have this question. If you want to understand the condition of the disease, you should know about the examination methods of brain cancer. Let us follow the experts to learn about the examination methods of brain cancer .

1. Fundus examination: observe whether there is optic nerve head edema. Papilledema is a sign of increased intracranial pressure. It is called the "three symptoms" of increased intracranial pressure together with headache and vomiting. However, it is only seen in one-quarter of patients. Therefore, the possibility of brain tumor cannot be simply ruled out based on a negative eye examination.

2. Head X-ray: It helps to understand whether there is increased intracranial pressure, local destruction or hyperplasia of the skull, whether the sella turcica is enlarged, the displacement of pineal calcification and pathological calcification in the brain tumor, etc. It is helpful for positioning and qualitative diagnosis, but the positive rate of X-ray is less than one-third, so brain tumors cannot be ruled out due to negative X-rays. This is one of the examination methods for brain cancer.

3. EEG examination: It has the value of locating fast-growing brain tumors in the cerebral hemispheres, and the amplitude and frequency of the diseased side can be seen to be reduced, but it is not very helpful for diagnosing brain tumors in the midline, deep in the hemisphere, and under the tentorium. The EEG topography developed after the 1970s can graphically display the location and range of intracranial lesions. It is more sensitive to the diagnosis of brain tumors than conventional EEG. Its main manifestation is abnormal slow wave power in the tumor area and around the tumor area. It is an effective screening method before CT examination.

4. Brain CT scan: The detection rate of brain tumors can reach more than 90%. It is easy to display the size, shape, number, location, density and nature of the lesions, and the anatomical relationship is clear. It is currently the main method for brain cancer examination.

5. Magnetic resonance imaging (MRI): It can show most intracranial tumors and peritumoral edema, and can accurately show the location, size and shape of the tumor. It is an important additional examination method for CT, especially for tumors of the skull base and brain stem close to the bones, such as benign astrocytoma on the tentorium, which can show autologous abnormalities, making up for the missed diagnosis of CT without abnormal findings. Therefore, MRI is more suitable for early diagnosis. It is also one of the examination methods for brain cancer.

The above is an introduction to the examination methods for brain cancer. I hope the above content can be helpful to you. If you have any questions about brain cancer, you can contact our online experts and they will give you detailed answers.

For more information, please visit the brain cancer special topic at http://www..com.cn/zhongliu/na/ or consult an expert for free. The expert will then give a detailed answer based on the patient's specific situation.