Encoders for Magnetic Resonance Imaging & Precise Position Measurement/Display Control
As late as 1982, there were but a handful of Magnetic Resonance Imaging (MRI) scanners in the entire United States. Today, there are thousands enabling an image in to be captured in seconds versus what used to take hours for diagnosis of brain tumors and disorders, spinal disorders, multiple sclerosis, and cardiovascular disease.
MRI is a noninvasive diagnostic technique that uses nuclear magnetic resonance to produce cross-sectional images of organs and other internal body structures. The patient lies inside a large, hollow cylinder or tube containing a strong electromagnet, which causes the nuclei of certain atoms in the body (especially those of hydrogen) to align magnetically. Whether or not the patient goes in head first or feet first, as well as how far in the magnet they will go, is determined by the type of exam to be performed
The patient, lying on his or her back, slides into the bore on a special table whose exact position is controlled and monitored by encoders with position measurement feedback supplied to the PC and MRI technician. Encoders ensure that the MRI technologist can move and position the patient’s body to the exact area or isocenter of the magnetic field (indicated by a crossed light beam marker) to ensure an accurate and quality image scan.
The patient is then subjected to radio waves that are then detected by a receiver and translated into two-dimensional or 3-D pictures by computer.
Dynapar offers a range of industry duty encodersdesigned to comply with FDA manufacturing guidelines for MRI’s. Our standard and customized product offerings and global manufacturing and support are designed to work within any engineering project deadline:
- Dynapar E14or E12small unit encoders interface with a PLC which communicates to controller (PC or MRI machine)
The Series E14 is a totally enclosed,easy-to-install,incremental encoder designed for commercial and industrial applications with limited space. > Discover More
The E12 is standard Size 12 (1.2" diameter), servo or face-mount, with a rugged metal housing. > Discover More
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MRI Schematic Diagram
This schematic diagram depicts the functional configuration of an MRI unit.