Loading an Image
Images must be in Analyze format. Tracer is able to automatically detect when image headers and
images need to be byteswapped, so images from PC's can be viewed on Sun workstations and vice versa.
To load an image:
- From the "File" menu, choose "Open Image ..."
- Select the .hdr file of the image that you want to open from the "Open" dialogue box.
If the file is not in the current directory, the popup menu in the upper left of the dialogue
box will let you move up the directory tree, or you can double click on a subdirectory icon to
move down the directory tree.
- Once the .hdr file is selected, click the "Open" button in the dialogue box to load the file.
- Large files may take many seconds to load, a status bar may appear to show your progress.
- Once the file is loaded, the image should appear in the display region. Tracer will
automatically take you to a plane in the middle of the image and will adjust the intensity of the
display to a (usually) reasonable value. If the display appears black, this may be a problem with
the automatic intensity adjustment, and you may need to set the intensity manually.
If you have already loaded a file and choose to load another file with different dimensions, any
tracings of structures will be discarded (you will be notified, but won't have any opportunity to
change your mind). Consequently, it is always a good idea to save your traces
before you load a new image.
If you have already loaded a file and choose to load another file with the same dimensions, you
will be given the option to discard any existing traces.
©2001 Roger P. Woods, M.D.
Modified: December 15, 2001