New technology like MRI appears with the development…
Nowadays it is one of the most exact way to diagnose any health defect
Key Facts:
Magnetic Resonance Imaging (MRI), or nuclear magnetic resonance imaging (NMRI), is primarily a medical imaging technique most commonly used in radiology to visualize the internal structure and function of the body. MRI provides much greater contrast between the different soft tissues of the body than computed tomography (CT) does, making it especially useful in neurological (brain), musculoskeletal, cardiovascular, and oncological (cancer) imaging.
Unlike CT, it uses no ionizing radiation, but uses a powerful magnetic field to align the nuclear magnetization of (usually) hydrogen atoms in water in the body. Radio frequency (RF) fields are used to systematically alter the alignment of this magnetization, causing the hydrogen nuclei to produce a rotating magnetic field detectable by the scanner. This signal can be manipulated by additional magnetic fields to build up enough information to construct an image of the body.
Also MRI technology uses Mimics (CT/MRT medical imagin – Mimics).
Materialise’s Interactive Medical Image Control System (Mimics) is an interactive tool for the visualization and segmentation of CT images as well as MRI data and 3D rendering of objects.
The phenomenon of NMR was discovered in 1946, its discovers F. Bloch and E. Purcell received the Nobel Prize. However, the method of MRI gone beyond laboratory researches in the early 80’s and now it takes the first place in the medical diagnosis.
The CT contrast associates with a single parameter that characterizes each tissue. – Its X-ray density, or how to say «the electronic density of» matter, ie the ability to layer a substance to absorb rent. radiation. We can say that CT reflects how the surface structure of the atoms of matter. What looks brighter fabric to CT, so it is denser.