CTMRedit: a matlab GUI for viewing, segmenting, and interpolating CT and MRI Images

Written by Mark Hasegawa-Johnson and Jul Cha

Welcome to the CTMRedit home page!

If you are new to CTMRedit, I recommend that you look at the Visual Guide first, to familiarize yourself with the editing window layout. Then open the Tutorial Introduction; this file will walk you through the procedure of downloading, installing, and running CTMRedit with sample data.

If you would like to be on a mailing list for announcements about CTMRedit, send mail with the single word "subscribe" in the message body to ctmredit-users-request@citidep.org. If you have recommendations for improving CTMRedit, please send the maintainers mail at ctmredit-maintainers@citidep.org. Thank you!

Tutorial Information

• Visual Guide to the editing window.
• Tutorial Introduction for Windows or Unix, with screen shots.
• ASCII help files: Help on Starting CTMRedit, Help on Image Loading, Help on Button Bar Tools
• Contents of the distribution.

Features

• Display a "main image," and two "locator images" in orthogonal planes:
  • Yellow locator line shows position of the main image on each locator image.
  • If the main image is zoomed, blue zoom lines on the locator images show the extent of the main image window.
• Edit an "outline object." The outline object is a set of points with the following properties:
  • Arbitrary (non-integer) X and Y coordinates
  • Stored separately from the main image
  • Up to six differently-colored regions of interest.
  • Stored in a machine-independent format based on the NIST SPHERE format
• Load images:
  • Quickly: automatically initialized popup menus allow rapid navigation of a large database.
  • Without aliasing: all zooming uses the imagesm function, which upsamples images to avoid a "pixelly" zoom.
  • At any desired intensity: "Brighter" and "Darker" buttons adjust the mapping between 16-bit image intensity values and a typically 8-bit screen intensity.
  • Natively from GE SIGNA format files, as output by the GE "ximg" utility.
  • From any other standard image format, using the matlab "imread" function.
• Plot completed outline in three dimensions
  • Plot without interpolation, to check for consistency, or
  • Interpolate open curves using linear or sinc interpolation, or
  • Interpolate closed contours using shape-based interpolation.
• All functions are in .m-files, so they are easy to extend and re-use.
• System requirements:
  • Operating system: Tested on Linux, Solaris, and Windows 98.
  • Requires matlab version 5.0 or greater.
  • RAM: 32M required, 64M recommended.

Download -- Complete Packages

Sample images

• images.tar.gz:  Coronal and axial images of the mouth and throat during the sound /ae/ as in "cat" (3.6M).
• images.zip:  Same as above, but in a zip file for PCs (be sure to unpack the directory structure) (3.6M).

Complete software

• CTMRedit.tar.gz - contains everything listed below, in a unix gzipped tar file (37K).
• CTMRedit.zip   - contains everything listed below, in a PC zip file (43K).