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| | | | | | | Searchterm 'Range' was also found in the following services: | | | | |
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RF coil pair ar ranged with their magnetic fields at right angles to each other in such a way as to minimize their mutual magnetic interaction. | | | | | |
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(DTI) Diffusion tensor imaging is the more sophisticated form of DWI, which allows for the determination of directionality as well as the magnitude of water diffusion. This kind of MR imaging can estimates damage to nerve fibers that connect the area of the brain affected by the stroke to brain regions that are distant from it, and can be used to determine the effectiveness of stroke prevention medications.
DTI (FiberTrak) enables to visualize white matter fibers in the brain and can map ( trace image) subtle changes in the white matter associated with diseases such as multiple sclerosis and epilepsy, as well as assessing diseases where the brain's wiring is abnormal, such as schizophrenia.
The fractional anisotropy (FA) gives information about the shape of
the diffusion tensor at each voxel. The FA is based on the normalized
variance of the eigenvalues. The fractional anisotropy reflects differences between an isotropic diffusion and a linear diffusion. The FA range is between 0 and 1 (0 = isotropic diffusion, 1 = highly directional).
The development of new imaging methods and some useful analysis techniques, such as 3-dimensional anisotropy contrast (3DAC) and spatial tracking of the diffusion tensor tractography (DTT), are currently under study. | | | | • View the DATABASE results for 'Diffusion Tensor Imaging' (9).
| | | • View the NEWS results for 'Diffusion Tensor Imaging' (2).
| | | | Further Reading: | | Basics:
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News & More:
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Device Information and Specification
CLINICAL APPLICATION
Whole body
SE, IR, FSE, FIR, GE, SG, BASG, PBSG, PCIR, DWI, Radial, Angiography: TOF, FLUTE (Fluoro-triggered bolus MRA), Time-resolved MRA
IMAGING MODES
Single, multislice, volume study
Level Range: -2,000 to +4,000
POWER REQUIREMENTS
208/220/240 V, single phase
| | | | • View the DATABASE results for 'Echelon™ 1.5T' (2).
| | | • View the NEWS results for 'Echelon™ 1.5T' (3).
| | | | Further Reading: | Basics:
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| | | Searchterm 'Range' was also found in the following services: | | | | |
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| | | | • View the DATABASE results for 'Element' (40).
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Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Cylindrical Wide Short Bore
Opt. (WIP) Single and Multi Voxel
SE, FE, IR, FastSE, FastIR, FastFLAIR, Fast STIR, FastFE, FASE, Hybrid EPI, Multi Shot EPI; Angiography: 2D(gate/non-gate)/3D TOF, SORS-STC
IMAGING MODES
Single, multislice, volume study
TE
8 msec min. SE; 1.2 msec min. FE
less than 0.015 (256x256)
1.0 min. 2-DFT: 0.2 min. 3-DFT
32-1024, phase;; 64-1024, freq.
65.5 cm, patient aperture
4050 kg (bare magnet incl. L-He)
COOLING SYSTEM TYPE
Closed-loop water-cooled
Liquid helium: approx. less than 0.05 L/hr
Passive, active, auto-active
| | | | • View the DATABASE results for 'Excelart AG™ with Pianissimo' (2).
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