Sorry, this section is still under construction.

Aneurysm Bone Dimmed Visualization

Please Review

This tutorial will attempt to guide you through a specific set of functions within VIDA step by step while by-passing an in depth explanation of the multitude of capabilities for each specific module. If you wish to find a more detailed discussion of any of these modules, please click on the smiling face and "have fun."

Start VIDA

Type vida_start.

Loading Scan

If the image data is not on your computer, you will need to transfer the data to disk before you can load it into shared memory. For more explicit instructions, please see the Tape Utilities section.

Loading Data into Shared Memory

To use VIDA's Volume Render Program, you must first load the image data into shared memory.

To maximize the contrast of the structures within the brain, you will want to find and load the grey scale values of the blood vessel and its immediate surrounding tissue. Using the LAF:Sample panel, draw a box in the brain. Using the histogram, determine the minimum and maximum grey scale values. Next, using the LAF:Properties panel, type in the desired Scale Max value and press return (the desired maximum should be the LAF:Sample maximum(i.e. 353) + (100 to 150)). Then type in the desired Scale Min value and press return (the desired maximum should be the LAF:Sample minimum (i.e. -33) - (100 to 150)). If you want to preview what you are about to load, using the LAF:Preview panel, press the loop button to view the image as it will appear after being loaded. For more explicit information on loading data, please see the Loading Image Data section.

Visualizing Cerebral Blood Vessel

Display Colors and Contrast

To enhance your ability to view the cerebral blood vessels, you may wish to change the display colors. We suggest you select heat or Grey_Screen from the Color Scales menu. For more explicit instructions, please see the Color Scales section. You may also find changing the Window and Level parameters useful for visualization.

VIDA Tutorial Sections Relevant to the 3-D Visualization of Brain Aneurysm Tutorial

You may find it helpful to review the relevant VIDA tutorial sections.

Tape Utilities

Loading Image Data

LAF:Sample

LAF:Properties

LAF:Preview

Color Scales

2-D Segmentation

Volume Renderer

VR:Select Volume

VR:Rendering Parameters panel

VR:Movie Maker panel

Movie Viewer

Last modified: Tue Jun 23 10:40:06 CDT