What Is MRI (Magnetic Resonance Imaging)?

Magnetic resonance imaging (MRI) is a new inspection technique based on the principle that magnetic nuclei can generate transitions between energy levels under the action of a magnetic field. MRI helps to check the energy state and brain blood of patients with epilepsy. The flow situation is of great value in the diagnosis of degenerative diseases.

Magnetic resonance imaging (MRI)

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Magnetic resonance imaging (MRI) is a new inspection technique based on the principle that magnetic nuclei can generate transitions between energy levels under the action of a magnetic field. MRI helps to check the energy state and brain blood of patients with epilepsy. The flow situation is of great value in the diagnosis of degenerative diseases.

MRI is achieved by the external high-frequency magnetic field, which generates signals by radiating energy from substances in the body to the surrounding environment. The imaging process is similar to image reconstruction and CT, except that MRI does not rely on external radiation, absorption and reflection, and does not rely on radioactive materials. Gamma radiation in the body uses the interaction of external magnetic fields and objects to image. High-energy magnetic fields are not harmful to the human body.

Common MRI examinations in the clinic reveal changes in the brain structure of secondary epilepsy. If the clinical classification of epilepsy is unknown, MRI can determine whether the patient is caused by changes in the brain structure. Intracranial tumors often cause epilepsy. Glioblastomas, ganglia, gliomas, arteriovenous malformations, and hematomas have extremely high diagnostic confirmation rates. MRI can clearly show the brain atrophy of patients with epilepsy, and it shows the cerebral parenchyma and cerebrospinal fluid very well.

Compared with MRI and CT, the main advantages are:

Ionizing radiation has no radiological damage to the brain tissue and no biological damage.

It can directly make tomographic images of cross section, sagittal plane, coronal plane and various inclined planes.

There are no artifacts such as ray hardening in CT images.

It is not disturbed by osteograms, and it can be satisfied that small lesions in the posterior cranial fossa and brain stem can show high diagnostic value for the cranial and parasagittal sinus, lateral fissure structure and widely metastatic tumors.

shows that the pathological process of the disease is more extensive and the structure is clearer than CT. It can be found that CT shows completely normal isodensity lesions, especially demyelinating diseases, encephalitis, infectious demyelinating, ischemic lesions and low-grade gliomas.