Mean diffusivity, fractional anisotropy maps, and three-dimensional white-matter tractography by diffusion tensor imaging. Comparison between single-shot fast spin-echo and single-shot echo-planar sequences at 1.5 Tesla

2007 ◽  
Vol 18 (4) ◽  
pp. 830-834 ◽  
Author(s):  
Masaaki Hori ◽  
Keiichi Ishigame ◽  
Nobuyuki Shiraga ◽  
Hiroshi Kumagai ◽  
Shigeki Aoki ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Diffusion Tensor ◽  
Spin Echo ◽  
Three Dimensional ◽  
Mean Diffusivity ◽  
Fast Spin Echo ◽  
Single Shot ◽  
White Matter Tractography ◽  
Echo Planar ◽  
Fast Spin

Single-shot fast spin-echo diffusion tensor imaging of the lumbar spine at 1.5 and 3 T

2007 ◽  
Vol 25 (5) ◽  
pp. 665-670 ◽  
Author(s):  
Julio Carballido-Gamio ◽  
Duan Xu ◽  
David Newitt ◽  
Eric T. Han ◽  
Daniel B. Vigneron ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Lumbar Spine ◽  
Diffusion Tensor ◽  
Spin Echo ◽  
Fast Spin Echo ◽  
Single Shot ◽  
Fast Spin

Improvement of MR cholangiopancreatography at .5 T: Three-dimensional half-averaged single-shot fast spin echo with multi-breath-hold technique

1998 ◽  
Vol 8 (2) ◽  
pp. 459-466 ◽  
Author(s):  
Tomoaki Ichikawa ◽  
Hiroki Haradome ◽  
Hideto Hanaoka ◽  
Yosimori Kassai ◽  
Toshiaki Nitatori ◽  
...  
Keyword(s):  
Spin Echo ◽  
Three Dimensional ◽  
Fast Spin Echo ◽  
Breath Hold ◽  
Single Shot ◽  
Mr Cholangiopancreatography ◽  
Fast Spin

Single-shot fast spin-echo diffusion tensor imaging of the brain and spine with head and phased array coils at 1.5 T and 3.0 T

2004 ◽  
Vol 22 (6) ◽  
pp. 751-759 ◽  
Author(s):  
Duan Xu ◽  
Roland G Henry ◽  
Pratik Mukherjee ◽  
Lucas Carvajal ◽  
Steven P Miller ◽  
...  
Keyword(s):  
Phased Array ◽  
Diffusion Tensor ◽  
Spin Echo ◽  
Fast Spin Echo ◽  
Single Shot ◽  
3.0 T ◽  
Phased Array Coils ◽  
The Brain ◽  
Fast Spin ◽  
Array Coils

Magnetic resonance diffusion tensor imaging and tractography of intracranial cavernous malformations: preliminary observations and characterization of the hemosiderin rim

2010 ◽  
Vol 112 (4) ◽  
pp. 814-823 ◽  
Author(s):  
Keith A. Cauley ◽  
Trevor Andrews ◽  
Jay V. Gonyea ◽  
Christopher G. Filippi
Keyword(s):  
Diffusion Tensor Imaging ◽  
White Matter ◽  
Diffusion Tensor ◽  
Mean Diffusivity ◽  
Mass Effect ◽  
Lesion Size ◽  
Single Shot ◽  
Cavernous Malformations ◽  
Central Lesion ◽  
White Matter Tractography

Object Cavernous malformations (CMs) can cause symptoms that appear out of proportion to the lesion size, leading one to hypothesize that they may have an effect on adjacent white matter that is not fully explained by local mass effect. The goal of this study was to investigate the diffusion tensor (DT) properties of CMs, the hemosiderin rim, and normal-appearing adjacent white matter. Methods Eighteen cavernous malformations were characterized using standard MR imaging sequences as well as 6-direction DT imaging with single-shot echo planar–gradient echo imaging at 3 tesla. Results Diffusion tensor imaging demonstrated that CMs have a characteristic signature on DT imaging, with low fractional anisotropy (FA) and high mean diffusivity centrally within the lesion. The hemosiderin rim had a high FA value relative to the central lesion or adjacent white matter. Tractography revealed that tracts neatly deviate around CMs. Tracts were typically seen to pass through the hemosiderin rim. Conclusions The hemosiderin rim of CMs was intimately associated with white matter tracts that were deviated by the central lesion. These findings are consistent with histopathological reports that the hemosiderin rim is composed of blood breakdown products deposited in viable white matter.

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