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 'Shim Coils' 
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Result : Searchterm 'Shim Coils' found in 1 term [] and 5 definitions [], (+ 15 Boolean[] results
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Shim CoilsInfoSheet: - Coils - 
Intro, 
Overview, 
etc.MRI Resource Directory:
 - Coils -
 
Coils carrying a relatively small current that are used to provide auxiliary magnetic fields in order to compensate for inhomogeneities in the main magnetic field of a MR system. See also Shimming.
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• Related Searches:
    • Coil
    • Shimming
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MRI Resources 
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Active Shimming
 
Shimming by suitably adjusting the currents in shim coils for qualitiy assurance.
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• View the DATABASE results for 'Active Shimming' (4).Open this link in a new window

 
Further Reading:
  Basics:
Second Order Shimming of High Field Magnets
   by www.healthcare.siemens.com    
Dealing with Increased MRI Field Strength
Tuesday, 1 October 2013   by www.evaluationengineering.com    
  News & More:
Improved shim method based on the minimization of the maximum off-resonance frequency for balanced SSFP
Monday, 1 June 2009   by www.ncbi.nlm.nih.gov    
MRI Resources 
Pacemaker - Nerve Stimulator - Claustrophobia - Databases - Quality Advice - Spine MRI
 
Chiller
 
A refrigeration unit that supplies cold water used to cool MRI components. Depending on the system configuration chillers are used to cool shield coolers, shim coils and sometimes the air conditioning.
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Further Reading:
  News & More:
Cooling MRI magnets without a continuous supply of scarce helium
Tuesday, 13 August 2013   by www.wired.co.uk    
MRI Resources 
Examinations - Jobs pool - Non-English - Bioinformatics - Online Books - Stent
 
CoilForum -
related threadsInfoSheet: - Coils - 
Intro, 
Overview, 
etc.MRI Resource Directory:
 - Coils -
 
A coil consists of one or more loops of conductive wire, looped around the core of the coil. Coils are part of the hardware of MRI machines and are used to create a magnetic field or to detect a changing magnetic field by voltage induced in the wire. A coil is usually a physically small antenna.
The perfect coil produces a uniform magnetic field without significant radiation.
Different types of MRI coils are used in MR systems:
Gradient coils are used to produce controlled variations in the main magnetic field (B0) to provide spatial localization of the signals and to apply reversal pulses in some imaging techniques.
MR imaging radio frequency coils to receive and/or transmit the RF signal.
Shim coils provide auxiliary magnetic fields in order to compensate for inhomogeneities in the main magnetic field of the MRI machine.
See also Gradient Coil, Radio Frequency Coil, Hardware and Coil Loading.

See also the related poll result: '3rd party coils are better than the original manufacturer coils'
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• View the NEWS results for 'Coil' (11).Open this link in a new window.
 
Further Reading:
  News & More:
DOTmed Industry Sector Report: MRI Coil Sales & Service Companies
Thursday, 13 December 2007   by www.dotmed.com    
High-field MRI Coils – that work, superbly, even at 750 MHz
   by www.dotynmr.com    
MRI coil optimized for imaging of infants gets FDA clearance
Tuesday, 17 April 2012   by www.medcitynews.com    
ScanMed Introduces a Groundbreaking New Orbit and Mandible Array to the MRI Market
Wednesday, 26 March 2014   by www.digitaljournal.com    
MRI Resources 
Veterinary MRI - Societies - Open Directory Project - Pacemaker - Knee MRI - Abdominal Imaging
 
MRI EquipmentInfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.
 
The MRI equipment consists of following components:
The magnet generates the magnetic field.
Shim coils make the magnetic field homogeneous.
Radio frequency coils transmit the radio signal into the body part being imaged.
Receiver coils detect the returning radio signals.
Gradient coils provide spatial localization of the signals.
Shielding coils produce a magnetic field that cancels the field from primary coils in regions where it is not desired.
The computer reconstructs the signals into the image.
The MRI scanner room is shielded by a faraday shield.
Different cooling systems cool the magnet, the scanner room and the technique room.
Better MRI equipment and software design along with the latest information technology improves system maintenance and overall communication. Software and digital imaging and communications in medicine (DICOM) compatibility allows to network into hospital databases, helps to modify pulse sequences, data post processing, and archiving via picture archiving and communication system (PACS).

See also the related poll result: 'Most outages of your scanning system are caused by failure of'
Radiology-tip.comCT Scanner,  Radiography
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Radiology-tip.comUltrasound Machine,  Ultrasound System Performance
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Further Reading:
  News & More:
Dräger introduces anaesthesia system for MRI environment
Wednesday, 12 December 2007   by www.mtbeurope.info    
MRI Resources 
Stimulator pool - Absorption and Emission - Homepages - Diffusion Weighted Imaging - Mass Spectrometry - Distributors
 
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