A medical imaging technique that is somewhat new to the radiology field is called Magnetic Resonance Imaging. This imaging technique is performed to show anatomy and physiological processes in disease and healthy human anatomy. MRI scanners are strong radio waves, magnetic fields, and magnetic field gradients that generate organ images in the human body. MRI’s do not involve ionizing radiation or actual X-rays which puts it in an entirely different class than CT or computerized tomography and PET scans. MRI’s use nuclear magnetic resonance in a medical application. NMR is also used for imaging. An example would be NMR spectroscopy being used by NMR applications.
Magnetic Resonance Imaging was originally referred to as Nuclear Magnetic Resonance Imaging. This name was dropped though to avoid any negative associations with the wording. Hydrogen atoms are generally associated with water and fat and they are naturally abundant in biological and people in general. Atomic nuclei usually are able to be readily absorbed and emit radio frequency energy in an external magnetic field. In research and clinical MRI, atoms of hydrogen are used to generate a signal of detectable radio frequency. The antennas receive these emissions in close proximity to the human organs that may be examined by the ordering physician. MRI’s are essential because they literally map the water and fat locations in the human body. Radio waves are sent out in pulses in order to excite spin of nuclear energy transitions and the signal of the magnetic gradient fields are localized in space. Pulse sequences can be varied by perimeters. This can set off different contrasts between the tissues can be generated based upon the relaxation properties of the atoms of hydrogen. In the 1970’s and 1980’s is when the MRI was proven to the versatile in the imaging world. Diagnostic medicine and biomedical research use MRI’s prominently for proper diagnosis in human anatomy and its diseases. mri imaging kenai ak and its MRI scans are capable of the production of a variety of physical and chemical data, plus detailed spatial imaging.
X-ray hazards are well controlled by the Radiation Operators Branches worldwide in most medical contexts. MRI is always a better choice than the typical CT scan. Magnetic Resonance Imaging is often used in the staging of diseases, medical diagnosis, and follow-ups without exposing the body to unnecessary radiation in all clinics and healthcare facilities. MRI’s and CT scans often yield different information diagnostically. CT scans gives off more radiation that the MRI scans. However, MRI’s often have the patients enter a narrow, confined tube, they are generally louder and take a longer amount of time to complete. Some patients that have non-removable metal inside their body habitus or special medical implants may not be able to undergo a MRI examination safely. Patients that have shrapnel, cochlear implants, and cardiac pacemakers should not have a MRI procedure. A patient in their first trimester of pregnancy may have a MRI before a CT procedure due to the ionizing radiation effects that it may have upon an unborn fetus.