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 'Isotropic' 
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Result : Searchterm 'Isotropic' found in 4 terms [] and 11 definitions []
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Isotropic
 
Equal intensity in all directions.
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    • Isotropic Voxel
    • Contrast Enhanced Magnetic Resonance Angiography
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Isotropic Voxel
 
A voxel that is uniform in all directions.
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Further Reading:
  News & More:
Voxel-based structural magnetic resonance imaging (MRI) study of patients with early onset schizophrenia
Monday, 22 December 2008   by 7thspace.com    
MRI Resources 
Pathology - Pregnancy - Process Analysis - Stent - Musculoskeletal and Joint MRI - Devices
 
Isotropic Motion
 
Motion, which is uniform in all directions. This is generally used in reference to molecular diffusion or rotation, which gives rise to relaxation of the spin system through the dipole dipole interaction.
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MRI Resources 
Process Analysis - MR Myelography - Sequences - Used and Refurbished MRI Equipment - Blood Flow Imaging - Software
 
T1W High Resolution Isotropic Volume ExaminationInfoSheet: - Sequences - 
Intro, 
Overview, 
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(THRIVE) THRIVE is an optimized fast T1 weighted 3 dimensional imaging technique combining sensitivity encoding, large volume coverage and uniform fat suppression. THRIVE improves for example dynamic liver, small bowel, breast, prostate and pancreas MRI, providing isotropic images with high resolution in short breath-hold times.
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3 Dimensional Magnetic Resonance AngiographyInfoSheet: - Sequences - 
Intro, 
Overview, 
Types of, 
etc.MRI Resource Directory:
 - MRA -
 
(3D MRA) The 3D angiography technique can be applied to focus on fast flowing (arterial) blood and to visualize small tortuous vessels. 3D TOF images are less sensitive to turbulent flow artifacts. The advantage of this approach is that the signal, acquired from the entire volume has an increased signal to noise ratio. Slices are defined by a second phase encoded axis, which divides the volume into 'partitions'. 3D TOF MRA is acquired with 3D FT slabs or multiple overlapping thin 3D FT slabs (MOTSA) depending on the coverage required and the range of flow-velocities under examination.
Such 3D techniques can provide equal spatial resolution along all three axes, i.e. be 'isotropic', or the partition thickness can be greater or less than the in plane spatial resolution in which case can be said to be 'anisotropic'. The circle of Willis, anatomy as well as its fast arterial flow, lends itself well to both 3D TOF and 2D or 3D phase contrast angiography.
 
Images, Movies, Sliders:
 CE MRA of the Aorta  Open this link in a new window
    
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 PCA-MRA 3D Brain Venography Colored MIP  Open this link in a new window
    

 CE-MRA of the Carotid Arteries Colored MIP  Open this link in a new window
    
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 Circle of Willis, Time of Flight, MIP  Open this link in a new window
    
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Further Reading:
  Basics:
CHAPTER 55: Ischemia
2003
Magnetic resonance angiography: current status and future directions
Wednesday, 9 March 2011   by www.jcmr-online.com    
MRI Resources 
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