When computing the contour tree, we store a mapping from each voxel in the image volume to its associated edge in the contour tree.
All of the dendrites, axons, and astroglial processes were traced in subdomains of each image volume to produce the densely reconstructed volumes (DR, Table 1 (available online only)).
This paper presents several representative hardware-accelerated algorithms that have been introduced recently to address the problems of classification, illumination, non-photorealistic rendering, decoding, and image compositing in volume data visualization.
The use of EARL-compliant PSF images (PSF7) resulted in volumes similar to those obtained with OSEM reconstructions (median = 34.6 cm3, interquartile range 7.9 to 51.4; no significant difference; Fig. 3a).
In clinical medical images, the scan volumes to be registered often contain same anatomic structures of the patient but are often scanned at different time or in different scans.
From a matrix whose rows corresponded to the 91 conditions (seven subjects * 13 regressors) and columns to the fifty-five thousand voxels in a single image volume, corresponding to the mask, were subtracted from each element the mean of voxel values of its column and the mean of voxel values of its row and added the grand mean of all voxel values in the original matrix.
The use of 320-detector row CT with whole-heart volume to be imaged in a single gantry rotation enables noninvasive quantitative assessment of coronary contrast changes with temporal uniformity, which may be ideal for TAG functional assessment of a coronary arterial stenosis [ 94, 96].
The acquired in vivo images were volume rendered to allow for the 3D reconstruction employing Image J software.
Since the reconstruction engine needs to position the 2D image in the 3D volume, in addition to the image data itself, the exact position and orientation of the US probe are required for each 2D image taken.
Care was taken to place aortic and carotid image slices perpendicular to the long axis of the vessel on the pilot images in order to limit partial volume effects.
