Loading Additional Image Volumes

Images must be in Analyze or NIfTI. MultiTracer is able to automatically detect when Analyze image headers and images need to be byteswapped, so images from different platforms should load and display automatically.

To load an additional image volume:

• From the main MultiTracer window "File" menu, choose "Open Volume Number" and select the submenu number that corresponds to the slot into which you want to load the volume. The sixteen available slots are arrayed in a four by four grid in the main MultiTracer window.
• In the "Open" dialog box, choose either the 'Analyze File Filter' or the 'NIfTI File Filter' depending on which type of file you want to open (Selecting the NIfTI file filter will also display Analyze format files since the .hdr suffix is allowed for NIfTI files)
• Select the .hdr file or .nii file that you want to open from the "Open" dialog 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.
• If the file that you have selected is a supported data type, the x-dim, y-dim, z-dim, t-dim x-size, y-size, z-size, bits/pixel and data type fields in the Open dialog will populate with values from the header. If these fields remain blank, the file is not a supported data type and any attempt to load the file will fail.
• If the t-dim of the file is greater than one, the "Load volumes" fields in the Open dialog will be editable, allowing you to specify the range of volumes that you want to load (the default is to load all volumes). Acceptable values for these fields range from one to t-dim, and the value in the first field must be less than or equal to the value in the second field.
• Once the file is selected, click the "Open" button in the dialogue box to load the file.
• Large files may take several 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.
• If the additional image volume does not match the dimensions of the first image volume, it will be discarded and an error message will appear.

Modified: August 26, 2012