What does MRI check? What is MRI

As a new medical technology in recent years, the emergence of magnetic resonance imaging has provided solid support for the diagnosis of medical diseases. This scientific research technology, which only appeared in the 1980s, has already become the mainstream disease diagnosis and treatment technology. So what exactly does this magical MRI examination include, and what parts of our body can it diagnose?

Nuclear magnetic resonance imaging is also called magnetic resonance imaging, also known as spin imaging, and magnetic resonance imaging in Taiwan. It is based on the different attenuation of the released energy in different structural environments inside the material. The emitted electromagnetic waves are detected by applying an external gradient magnetic field. The position and type of the atomic nuclei that make up the object can be known. Based on this, a structural image of the object's interior can be drawn. It has been widely used in physics, chemistry, medicine, petrochemical engineering, archaeology and other fields. The application of magnetic resonance imaging technology in clinical diagnosis and scientific research has become a reality, greatly promoting the rapid development of medicine, neurophysiology and cognitive neuroscience.

Based on the different attenuation of the released energy in different structural environments inside the material, the emitted electromagnetic waves can be detected by applying an external gradient magnetic field to determine the position and type of the atomic nuclei that make up the object, and based on this, a structural image of the object's interior can be drawn.

1. Nervous system lesions: cerebral infarction, brain tumors, inflammation, degenerative diseases, congenital malformations, trauma, etc., are the earliest human systems to be applied. We have accumulated rich experience and the positioning and qualitative diagnosis of lesions are relatively accurate and timely, and early lesions can be discovered.

2. Cardiovascular system: It can be used for the diagnosis of heart disease, cardiomyopathy, pericardial tumors, pericardial effusion, mural thrombus, endocardial detachment, etc.

3. Chest lesions: tumors, lymph nodes and pleural lesions in the mediastinum can show the relationship between the lung masses and larger trachea and blood vessels.

4. Abdominal organs: diagnosis and differential diagnosis of liver cancer, hepatic hemangioma and liver cysts, diagnosis and differential diagnosis of intra-abdominal masses, especially retroperitoneal lesions.

5. Pelvic organs: uterine fibroids, other uterine tumors, ovarian tumors, qualitative positioning of pelvic masses, tumors of the rectum, prostate and bladder, etc.

6. Bones and joints: The diagnosis and scope of bone infection, tumor, and trauma, especially some subtle changes such as bone contusion, have great value. It has high diagnostic value for lesions of intra-articular cartilage, ligament, meniscus, synovium, synovial bursa, and bone marrow lesions.

Systemic soft tissue lesions: Regardless of whether they originate from tumors, infections, degenerative lesions of nerves, blood vessels, lymphatic vessels, muscles, or connective tissues, a relatively accurate positioning and qualitative diagnosis can be made.