Projects:CorticalCorrespondenceWithParticleSystem - Revision history

Styner: /* Description */

2011-03-30T18:48:12Z

Description

Styner: /* Key Investigators */

2011-03-30T18:47:10Z

Key Investigators

Styner: /* Key Investigators */

2011-03-30T18:47:03Z

Key Investigators

Marianna: /* Publications */

2010-05-14T14:51:44Z

Publications

Melonakos: /* Publications */

2010-05-11T20:23:44Z

Publications

Styner at 15:51, 11 May 2010

2010-05-11T15:51:55Z

Melonakos at 23:17, 20 October 2009

2009-10-20T23:17:09Z

Styner: /* Description */

2009-09-29T17:01:18Z

Description

Styner: /* Publications */

2009-09-29T16:59:46Z

Publications

Styner at 16:59, 29 September 2009

2009-09-29T16:59:02Z

@@ Line 43: / Line 43: @@
 mapping, while also smoothing the surface. FreeSurfer also preprocesses the
 input surface to generate a spherical topology.
 Once the framework for computing the correspondence given certain data features
@@ Line 49: / Line 48: @@
 that we would like to use together. We are using structural data as well as
 connectivity (DTI). We have first tested our method using structural metrics, namely, sulcal depth (as computed by FreeSurfer), and have demonstrated improved correspondence quality compared to traditional, location-only correspondence (using the particle-based entropy framework), and we have shown that our results are at least comparable to FreeSurfer. This comes as no surprise as we had already shown in [[Projects:PopulationBasedCorrespondence|our previous studies]] that correspondence can be enhanced by using local curvature in addition of point locations for objects with complex geometry. Next, we have developed a technique for representing the white matter connectivity information on the cortical surface in a manner that can be incorporated into the correspondence framework. We use probabilistic connectivity maps obtained by performing stochastic tractography (which is a [[Projects:DTIStochasticTractography | separate NA-MIC project]]) from various ROI's. The top left part on the image to the right shows this connectivity map overlaid with a coronal slice. The blue outline shows the cortical boundary. Note that the connectivity values on this surface are basically a function of sulcal depth, as illustrated on the far right. We use a cortex deflating scheme to overcome these problems. An example of this deflation process is shown on the bottom row of the figure. The connectivity values on the deflated surface provides a more accurate representation of the DTI data on the surface. We have found that using the connectivity maps in addition to sulcal depth and spatial location further improves correspondence quality.
 = Publications =

@@ Line 56: / Line 56: @@
 = Key Investigators =
-* UNC Algorithms: Ipek Oguz, Martin Styner, Clement Vachet
+* UNC Algorithms: Ipek Oguz, Martin Styner, Clement Vachet, Joohwi Lee
 * Utah Algorithms: Josh Cates, Tom Fletcher, Ross Whitaker

@@ Line 56: / Line 56: @@
 = Key Investigators =
-* UNC Algorithms: Ipek Oguz, Martin Styner
+* UNC Algorithms: Ipek Oguz, Martin Styner, Clement Vachet
 * Utah Algorithms: Josh Cates, Tom Fletcher, Ross Whitaker

@@ Line 51: / Line 51: @@
 = Publications =
 ''Published in LNCS/IPMI: Information processing in medical imaging''
-* [http://www.na-mic.org/publications/pages/display?search=Projects%3ACorticalCorrespondenceWithParticleSystem&submit=Search&words=all&title=checked&keywords=checked&authors=checked&abstract=checked&searchbytag=checked&sponsors=checked| NA-MIC Publication Database on Cortical Correspondence using Particle System]
+* [http://www.na-mic.org/publications/pages/display?search=Projects%3ACorticalCorrespondenceWithParticleSystem NA-MIC Publication Database on Cortical Correspondence using Particle System]
 = Key Investigators =

@@ Line 55: / Line 55: @@
 ''Published in LNCS/IPMI: Information processing in medical imaging''
-* [http://www.na-mic.org/publications/pages/display?search=Projects%3ACorticalCorrespondenceWithParticleSystem&submit=Search&words=all&title=checked&keywords=checked&authors=checked&abstract=checked&searchbytag=checked&sponsors=checked| NA-MIC Publication Database]
+* [http://www.na-mic.org/publications/pages/display?search=Projects%3ACorticalCorrespondenceWithParticleSystem&submit=Search&words=all&title=checked&keywords=checked&authors=checked&abstract=checked&searchbytag=checked&sponsors=checked| NA-MIC Publication Database on Cortical Correspondence using Particle System]
 = Key Investigators =

← Older revision		Revision as of 15:51, 11 May 2010
Line 57:		Line 57:
	* [http://www.na-mic.org/publications/pages/display?search=Projects%3ACorticalCorrespondenceWithParticleSystem&submit=Search&words=all&title=checked&keywords=checked&authors=checked&abstract=checked&searchbytag=checked&sponsors=checked\| NA-MIC Publication Database]		* [http://www.na-mic.org/publications/pages/display?search=Projects%3ACorticalCorrespondenceWithParticleSystem&submit=Search&words=all&title=checked&keywords=checked&authors=checked&abstract=checked&searchbytag=checked&sponsors=checked\| NA-MIC Publication Database]

−	~~'' In Press ''~~
−
−	~~Oguz I, Niethammer M, Cates J, Whitaker R, Fletcher T, Vachet C, Styner M. “Cortical Correspondence with Probabilistic Fiber Connectivity”. Proc. Information Processing in Medical Imaging, 2009~~

	= Key Investigators =		= Key Investigators =

@@ Line 26: / Line 26: @@
 explore correspondence on the cerebellum, which traditionally is excluded from
 such studies (e.g. in FreeSurfer-based work).
 The main disadvantage of using the particle-based correspondence technique
@@ Line 46: / Line 51: @@
 = Publications =