A region of interest (ROI) of 1.6 cm (tubing diameter) was placed over the aorta of the phantom, and ROIs of 4 cm diameter were placed over the left and right myocardial sections, carefully including the complete section of the vessel and tissue compartment in the segmentation.
Based on this calibration, volumetric BMD is determined independently for cortical and trabecular bone compartments using the segmentation process described previously.
E-cadherin antibodies (Cell Signaling Technology, Beverly, MA) were used to define the epithelial compartment for better tissue segmentation.
To compare global parenchyma volumes between groups, and to determine intracranial volume (ICV) for normalisation of subcortical volumes, each image was brain extracted using FSL's brain extraction tool [Smith, 2002] and segmented into gray matter, white matter and CSF compartments using FSL's Automatic Segmentation Tool (FAST) [Zhang et al., 2001].
However, a cohort of seven additional genes revealed a complex set of overlapping gene expression patterns indicating a much greater level of segmentation of this epithelial compartment (Figure 4).
Peterková et al. have identified five different morphotypes in the mandibular molar region of tabby/EDA mice and reported that these result from abnormal segmentation of the epithelial compartment of the dental lamina along a mesiodistal axis.
63 Such automated segmentation of adipose tissue compartments is critically important for widespread application of MR fat water imaging.
To do so, models of the pulp cavity were evaluated regarding the segmentation into separate pulp compartments.
The size of myocardial and ventricular compartments was determined by semi-automated segmentation in the short-axis slice images covering the entire heart.
Using Analyze 8.1© (Mayo Clinic, Rochester, MN), one investigator (JYL), unblinded to the image acquisition order, registered the baseline and 24 month MR images and then performed paired manual segmentation of the index-compartment tibia and femur cartilage.
