Dr. Razz

Dr Razz is a 16 bit image display and analysis program for Macintosh color computers. The program has been optimized for display of radiographic CT and MRI images, although any 16 bit image stored in a raster file format (with or without a header) can in principle be viewed. Features include near real-time window width and window level adjustments on the full 16 bit image data on standard Macintosh graphic hardware. Images can be viewed individually, or a series of images (eg, a CT or MRI exam) can be viewed in an image stack. Most non-compressed CT and MRI images can be opened automatically, without entering any image parameters. In the 'Auto' open mode, the program attempts to automatically determine image type (CT vs. MRI), presence of a header and byte order (little endian vs. big endian). However, a 'Custom' open mode allows complete adjustment of these and other parameters. Images created with the General Electric 'ximg' image extraction tool can be opened directly, even if compressed. The window width and window level setting can be interactively changed via the window/level control, or by the arrow keys. Most of the image processing and image analysis tools are not yet implemented. Images can be saved as 16 bit raster files, or 8 bit grayscale PICTs. TIFF and 8 bit raster formats should be included by the first official release.

System 7.x and a color Macintosh with a 68020 or greater CPU are required. A math co-processor is NOT required. A Power Macintosh version will be released after the first non-beta version is posted for 680x0 Macintoshes. The application supports the core AppleEvents (except for printing, which is not yet implemented) and stationary pad documents.

Dr Razz is a "freeware" application. You are free to distribute this program for non-commercial use. Please include all doucmentation that came with the program. However, the copyright is retained by the author, Thurman Gillespy III.

I am interested in supporting as many file formats as possible. Please contact me if you have specific file format information. C language header files are especially appreciated. I am also interested in collecting as many examples of different image file formats as possible for a test suite.