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Conductor
 
Material that allows heat or electric current to flow.
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• View the NEWS results for 'Conductor' (4).Open this link in a new window.

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Constructive Interference Steady StateInfoSheet: - Sequences -
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etc.
 
(CISS) This gradient echo sequence is a stimulated T2 echo. Two TrueFISP sequences are acquired with differing RF pulses and than combined for strong T2 Weighted high resolution 3D images.
These TrueFISP sequences are normally affected by dark phase dispersion bands, which are caused by patient induced local field inhomogeneities and made prominent by the relatively long TR used. The different excitation pulse regimes offset these bands in the 2 sequences. Combining the images results in a picture free of banding. The image combination is performed automatically after data collection, adding some time to the reconstruction process. The advantage of the 3D CISS sequence is its combination of high signal levels and extremely high spatial resolution.
Used for, e.g. inner ear, cranial nerves and cerebellum.

See also Steady State Free Precession.
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Further Reading:
  News & More:
Pediatric and Adult Cochlear Implantation1
2003   by radiographics.rsnajnls.org    
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Contiguous Slice Multi Echo MultiplanarInfoSheet: - Sequences -
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(CSMEMP) MR imaging pulse sequence in which signals for multiple contiguous slices at multiple echoes are collected.
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Contiguous Slice with Variable Echo MultiplanarInfoSheet: - Sequences -
Intro, Overview, 
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etc.
 
(CSVEMP) MR imaging pulse sequence in which signals for multiple contiguous slices at multiple echoes are collected.
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Continuous Arterial Spin LabelingInfoSheet: - Sequences -
Intro, Overview, 
Types of, 
etc.
 
(CASL) In order to take spins in a different magnetic state to that of the static tissue a train of RF pulses repeatedly saturates blood water spins flowing through the neck. The saturated (or 'labeled') spins flow into the brain and, assuming water is a freely diffusible tracer, exchange completely with brain tissue water, thus reducing the overall tissue magnetization. A steady state progresses where the regional magnetization in the brain is directly related to cerebral blood flow.
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Further Reading:
  Basics:
Measuring Cerebral Blood Flow Using Magnetic Resonance Imaging Techniques
1999   by www.stanford.edu    
  News & More:
Non-invasive MRI technique distinguishes between Alzheimer's and frontotemporal dementia
Saturday, 18 June 2005   by www.eurekalert.org    
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MRI is trending to low field magnets :
reduced costs will lead to this change 
AI will close the gap to high field 
only in remote areas 
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