Magnetic Resonance Imaging (Mri)

Magnetic Resonance Imaging (MRI)

Nuclear Magnetic Resonance Imaging (MRI) is a diagnostic research method based on the analysis of the absorption and transmission of high-frequency radio waves by water molecules contained in tissues when they are placed in a strong magnetic field (see Nuclear Magnetic Resonance). Modern high-speed computers make it possible to carry out this analysis with recording changes in tissue signals in any plane and thus obtain images of these tissues. This is especially important when studying the function of the central nervous and musculoskeletal systems in the human body, and to a lesser extent for studying the chest and abdominal cavity. Nuclear magnetic resonance is widely used in non-invasive diagnostics and treatment planning for various diseases, including malignant tumors: the advantage of this method is that it does not have any harmful effects on the human body, unlike, for example, radiography, where potentially harmful ionizing radiation is used.

NMR imaging is a method that allows you to obtain images of internal organs in three-dimensional space. The resulting images contain information about the distribution of hydrogen, deuterium, carbon and other isotopes in organs and tissues. The method allows you to see changes in organs, including pathological ones.

An MRI scanner is typically a large magnet into which the patient is placed. Around the magnet are coils that pick up signals from the nuclei of atoms in the patient's body. A special computer processes these signals and creates an image.

Modern tomographs can operate in several modes:

1. T1 mode - shows the distribution of water in tissues, allows you to distinguish soft tissues from bones;
2. T2 mode - allows you to see the distribution of fat in tissues and in images in this mode soft tissues look darker than in T1;
3. FLAIR mode is a mode that allows you to see the white matter of the brain, that is, those areas that consist of glial cells;
4. DW (diffusion weighted) tomography - allows you to visualize pathologies of the white matter of the brain;
5. DWI (diffusion-weighted) tomography.

The method is used both in diagnosis and in the treatment process. For example, to monitor the effectiveness of chemotherapy.

Although MRI is a relatively safe diagnostic method, you should consult your doctor before undergoing the procedure.

MRI is an advanced diagnostic method that is used to examine tissues of the brain, spinal cord, skeleton, lungs and cardiac system. It provides information about the structure, volume, size, shape and functional state of an organ or tissue, as well as its relationship with surrounding structures. An NMR resonance image (high-resolution MR images) is a three-dimensional representation of a substance, giving the user more detailed information about the density and hemic properties of the sample. Computed MRI can be performed using other nuclear medicine machines (PET/CT), through IOC (nuclear counterlostration) or using special data acquisition devices (MSDP and MIC). Modern research shows that the use of MRI can improve the early stages of detecting cancer and speed up the acquisition of accurate information about affected organs. In particular, Mri can confirm whether a patient has a precancerous disease or cancer and which forms have already developed.