Difference between revisions of "2010 Winter Project Week Musco Skeletal Segmentation"

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<i><u>Approach:</u></i>
 
<i><u>Approach:</u></i>
 
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Objective 1: We have adopted a multi-contrast MR methodology to segment knee bones and cartilage structures.  The algorithm utilizes tissue intensity information from multiple MR contrasts to segment structures of interest.  Inputs to the algorithm included n registered MR image sets.  The algorithm created an n-dimensional space of voxel intensities associated with the n image sets. The user assigned seed points to the structures of interest, and the algorithm assigned a cluster center to each structure of interest.     
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Objective 1: We have adopted a multi-contrast MR methodology to segment knee bones and cartilage structures.  The algorithm utilizes tissue intensity information from multiple MR contrasts to segment structures of interest.  Inputs to the algorithm included n registered MR image sets.  The algorithm created an n-dimensional space of voxel intensities associated with the n image sets. The user assigned seed points to the structures of interest, and the algorithm created a cluster center for each structure of interest. Cluster radii were calculated based on standard deviations obtained from seed points, and tissue structures classified based on intensity clustering of voxels.     
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Multi-Contrast MR images are collected and seed points for each region of interest are taken as input. Cluster center and standard deviation are calculated for each ROI based on pixel intensities of the seed points. The pixels are clustered based on different pixel intensity values in multiple MR images to the nearest cluster center radius.
 
  
 
For detailed approach, please visit http://www.na-mic.org/Wiki/index.php/Stanford_Simbios_group
 
For detailed approach, please visit http://www.na-mic.org/Wiki/index.php/Stanford_Simbios_group

Revision as of 01:08, 4 January 2010

Home < 2010 Winter Project Week Musco Skeletal Segmentation


Key Investigators

  • Stanford: Harish Doddi, Saikat Pal, Scott Delp
  • Kitware: Luis Ibanez

Objective

The aim of this project is to develop a methodology for rapid segmentation of knee structures from magnetic resonance (MR) images for subject-specific modeling. The overall goal can be broken down into two specific objectives -
1. Rapid segmentation of target structures into label maps.
2. Generation of simulation-ready models from existing atlas and label maps of individual structures.


Approach, Plan

Approach:
Objective 1: We have adopted a multi-contrast MR methodology to segment knee bones and cartilage structures. The algorithm utilizes tissue intensity information from multiple MR contrasts to segment structures of interest. Inputs to the algorithm included n registered MR image sets. The algorithm created an n-dimensional space of voxel intensities associated with the n image sets. The user assigned seed points to the structures of interest, and the algorithm created a cluster center for each structure of interest. Cluster radii were calculated based on standard deviations obtained from seed points, and tissue structures classified based on intensity clustering of voxels.



For detailed approach, please visit http://www.na-mic.org/Wiki/index.php/Stanford_Simbios_group


Plan:
a. Smooth the existing segmented label maps
b. Build models for bones and cartilage from the existing segmented label maps.

Progress

Finished segmenting different regions of interest like bones, cartilage etc.

Created label maps from existing segmented output.