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Result : Searchterm 'Helium' found in 1 term [] and 43 definitions []
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CHORUS 1.5Tâ„¢InfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.MRI Resource Directory:
 - Devices -
 
www.isoltech.co.kr/english/product/default.htm 'Next generation MRI system 1.5T CHORUS developed by ISOL Technology is optimized for both clinical diagnostic imaging and for research development.
CHORUS offers the complete range of feature oriented advanced imaging techniques- for both clinical routine and research. The compact short bore magnet, the patient friendly design and the gradient technology make the innovation to new degree of perfection in magnetic resonance.'
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Short bore
Head, C-spine, L-spine, TMJ, Knee, Shoulder, General purpose, Phased Array System: 4 digital receiver channels (Up to 12 channels)
Optional
SYNCHRONIZATION
ECG/peripheral: Optional/yes, respiratory gating
PULSE SEQUENCES
Spin Echo, Gradient Echo, Fast Spin Echo, Inversion Recovery (STIR, Fluid Attenuated Inversion Recovery), FLASH, FISP, PSIF, Turbo Flash ( MPRAGE ),TOF MR Angiography, Standard echo planar imaging package (SE-EPI, GE-EPI), Optional: Advanced P.A. Imaging Package (up to 4 ch.), Advanced echo planar imaging package, Single Shot and Diffusion Weighted EPI, IR/FLAIR EPI
IMAGING MODES
2D/3D, Travelling Sat, Multi-Slab 3D, MTC and TONE Pulse Sequence, Fat/Water Suppression, Presaturation (up to 6 bands), Flow Compensation using GMR pulse, Multi-Slice, Multi-Group Imaging
SINGLE/MULTI SLICE
Image reconstruction time (2562 ) : 0.02 s
FOV
40 cm
BORE DIAMETER
or W x H
58 cm diameter (patient)
MAGNET WEIGHT
4050 kg
H*W*D
233 x 206 x 160 cm
COOLING SYSTEM TYPE
Water-cooled coil and air-cooled amplifier
CRYOGEN USE
0.07 L/hr helium
STRENGTH
20 mT/m (Upto 27 mT/m)
5-GAUSS FRINGE FIELD
2.5 m / 3.8 m
Passive and active
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Cryogen Meter
 
Sometimes called helium meter or nitrogen meter is used to monitor the cryogen level of liquid He or N2 used to cool the magnet.
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Most Wanted - Breast MRI - Contrast Agents - Cardiovascular Imaging - Corporations - Non-English
 
Cryostat
 
Cryostats are devices for maintaining a constant low temperature (as by means of liquid helium used in MRI). They require vacuum chambers with thermal isolation.

See also Dewar, Cryoshielding and Boil off Rate.
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Further Reading:
  Basics:
Superconducting Magnets
   by mri-q.com    
Zero Boil Off Cryostats
Friday, 23 September 2011   by www.cryogenicsociety.or    
Searchterm 'Helium' was also found in the following services: 
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Dewar
 
A large vacuum jacketed double walled container generally made out of stainless steel that is used to transport cryogens. Cryogenic liquids are shipped and used non-pressurized in this thermally insulated containers. Dewar flasks are specifically designed to withstand rapid temperature changes and extreme differences in temperature. Flasks containing helium (used in MRI for cooling of superconducting magnets), hydrogen and other low-boiling liquid cryogens have an outer vessel of liquid nitrogen for insulation.
Dewars are also called cryostats.
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Further Reading:
  News & More:
Cryogenic Liquids and their Hazards
   by www.ccohs.ca    
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Element
 
An element consists of atoms having the same structure and the same chemically reaction.
See also Magnetic Resonance Spectroscopy, Isomer, Isotope, Helium, and Gadolinium.
Mathematically, an element or member of a set is any one of the separate objects that make up that set. Elements in arrays (parallel arrangement of many identical items) are used in MRI coils.

See also Array Coil, Array Processor, and Array Spatial Sensitivity Encoding Technique.
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MRI Resources 
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