Hageman:NAMICFluidMechDTITractography - Revision history

Nhageman: /* Links */

2010-06-22T18:11:39Z

Links

Nhageman: /* Publications */

2010-06-22T17:52:26Z

Publications

Nhageman: /* Publications */

2010-06-22T17:51:22Z

Publications

Nhageman: /* Links */

2009-06-04T16:58:27Z

Links

Nhageman: /* Description */

2008-06-23T17:51:03Z

Description

Nhageman: /* Fluid Mechanics Based DTI Tractography */

2008-06-23T17:45:16Z

Fluid Mechanics Based DTI Tractography

Nhageman: /* Description */

2008-06-23T17:41:36Z

Description

Nhageman at 17:40, 23 June 2008

2008-06-23T17:40:10Z

Nhageman at 09:48, 16 June 2008

2008-06-16T09:48:03Z

Nhageman at 09:47, 16 June 2008

2008-06-16T09:47:32Z

← Older revision		Revision as of 18:11, 22 June 2010
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	* [http://www.loni.ucla.edu LONI Website]		* [http://www.loni.ucla.edu LONI Website]

−	Project Week Results: [[2008_Winter_Project_Week:Fluid_Mechanics_Tractography\|2008 Winter]], [[2008_Summer_Project_Week\|2008 Summer]], [[2009_Winter_Project_Week\|2009 Winter]], [[2009_Summer_Project_Week\|2009 Summer]]	+	Project Week Results: [[2008_Winter_Project_Week:Fluid_Mechanics_Tractography\|2008 Winter]], [[2008_Summer_Project_Week\|2008 Summer]], [[2009_Winter_Project_Week\|2009 Winter]], [[2009_Summer_Project_Week\|2009 Summer]], [[2010_Summer_Project_Week\|2010 Summer]]

@@ Line 40: / Line 40: @@
 ''In Print''
 * [http://www.na-mic.org/Special:Publications?text=Projects:MultiscaleShapeSegmentation&submit=Search&keywords=checked NA-MIC Publications Database].
 <!--''In Press''-->

← Older revision		Revision as of 17:51, 22 June 2010
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	''In Submission''		''In Submission''
−	* Hageman NS, Toga AW, Narr K, Shattuck DW (2008). A diffusion tensor imaging tractography algorithm based on Navier-Stokes fluid mechanics. ''IEEE Trans. in Medicial Imaging'', In Submission.
	* Hamilton L, Nuechterlein K, Hageman NS, Woods R, Asarnow R, Alger J, Gaser C, Toga AW, Narr K (2008). Mean Diffusivity and Fractional Anisotropy as Indicators of Schizophrenia and Genetic Vulnerability, ''Neuroimage'', In Submission.		* Hamilton L, Nuechterlein K, Hageman NS, Woods R, Asarnow R, Alger J, Gaser C, Toga AW, Narr K (2008). Mean Diffusivity and Fractional Anisotropy as Indicators of Schizophrenia and Genetic Vulnerability, ''Neuroimage'', In Submission.

← Older revision		Revision as of 16:58, 4 June 2009
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	* [http://www.loni.ucla.edu LONI Website]		* [http://www.loni.ucla.edu LONI Website]

−	Project Week Results: [[2008_Winter_Project_Week:Fluid_Mechanics_Tractography\|2008 Winter]], [[2008_Summer_Project_Week\|2008 Summer]]	+	Project Week Results: [[2008_Winter_Project_Week:Fluid_Mechanics_Tractography\|2008 Winter]], [[2008_Summer_Project_Week\|2008 Summer]], [[2009_Winter_Project_Week\|2009 Winter]], [[2009_Summer_Project_Week\|2009 Summer]]

@@ Line 21: / Line 21: @@
 Representations of the pressure tensor derived from 2D slices from human control subjects.  At each voxel in the image, the pressure force is represented by a tensor glyph, an ellipsoid whose axis is obtained from a diagonalization of the corresponding pressure tensor.  The color of the ellipsoid represents the dominant diffusion direction, according to the color coded axes in the figure with the superior-inferior z-axis (blue) coming out of the page, the anterior-posterior y-axis (green) vertical, and the left-right x-axis (red) horizontal.  A. A 2D axial slice taken at the level of the internal capsule.  The white box marks the enlarged area shown in B.  B.  Enlarged view from A.  The posterior limb of the corpus callosum, marked with a star is a highly organized white matter tract, and the pressure force acts on the artificial fluid co-linear with the fiber tract.  In contrast, the lateral ventricular space, marked with a delta contains little structure.  Consequently, the pressure force is isotropic in that region.
-[[Image:NAMICflowfieldlesion.JPG|Fluid Velocity Field Solution]]
+[[Image:NAMICflowfieldlesion.JPG|400 px|Fluid Velocity Field Solution]]
 We solve our modified Navier-Stokes fluid mechanics model with these variables to get a fluid velocity field which is then used as a metric of regional connectivity.  Tracts are generated using a modified method based on a generalized gradient vector field approach.

← Older revision		Revision as of 17:40, 23 June 2008
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	Representations of the pressure tensor derived from 2D slices from human control subjects. At each voxel in the image, the pressure force is represented by a tensor glyph, an ellipsoid whose axis is obtained from a diagonalization of the corresponding pressure tensor. The color of the ellipsoid represents the dominant diffusion direction, according to the color coded axes in the figure with the superior-inferior z-axis (blue) coming out of the page, the anterior-posterior y-axis (green) vertical, and the left-right x-axis (red) horizontal. A. A 2D axial slice taken at the level of the internal capsule. The white box marks the enlarged area shown in B. B. Enlarged view from A. The posterior limb of the corpus callosum, marked with a star is a highly organized white matter tract, and the pressure force acts on the artificial fluid co-linear with the fiber tract. In contrast, the lateral ventricular space, marked with a delta contains little structure. Consequently, the pressure force is isotropic in that region.		Representations of the pressure tensor derived from 2D slices from human control subjects. At each voxel in the image, the pressure force is represented by a tensor glyph, an ellipsoid whose axis is obtained from a diagonalization of the corresponding pressure tensor. The color of the ellipsoid represents the dominant diffusion direction, according to the color coded axes in the figure with the superior-inferior z-axis (blue) coming out of the page, the anterior-posterior y-axis (green) vertical, and the left-right x-axis (red) horizontal. A. A 2D axial slice taken at the level of the internal capsule. The white box marks the enlarged area shown in B. B. Enlarged view from A. The posterior limb of the corpus callosum, marked with a star is a highly organized white matter tract, and the pressure force acts on the artificial fluid co-linear with the fiber tract. In contrast, the lateral ventricular space, marked with a delta contains little structure. Consequently, the pressure force is isotropic in that region.
		+
		+	[[Image:hageman_flowfield_lesion.jpg\|Fluid Velocity Field Solution]]
		+
		+	We solve our modified Navier-Stokes fluid mechanics model with these variables to get a fluid velocity field which is then used as a metric of regional connectivity. Tracts are generated using a modified method based on a generalized gradient vector field approach.

	[[Image:NAMICFMech_CspFig.jpg\|Human Corticospinal Tracts]]		[[Image:NAMICFMech_CspFig.jpg\|Human Corticospinal Tracts]]

← Older revision		Revision as of 09:48, 16 June 2008
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	* [http://www.loni.ucla.edu LONI Website]		* [http://www.loni.ucla.edu LONI Website]

−	Project Week Results: [[2008_Winter_Project_Week:Fluid_Mechanics_Tractography\|2008 Winter]], [2008_Summer_Project_Week\|2008 Summer]]	+	Project Week Results: [[2008_Winter_Project_Week:Fluid_Mechanics_Tractography\|2008 Winter]], [[2008_Summer_Project_Week\|2008 Summer]]

← Older revision		Revision as of 09:47, 16 June 2008
Line 48:		Line 48:
	* [http://www.loni.ucla.edu LONI Website]		* [http://www.loni.ucla.edu LONI Website]

−	Project Week Results: [[2008_Winter_Project_Week:Fluid_Mechanics_Tractography\|2008 Winter]]	+	Project Week Results: [[2008_Winter_Project_Week:Fluid_Mechanics_Tractography\|2008 Winter]], [2008_Summer_Project_Week\|2008 Summer]]