1995.12    developed as a part of surgical simulator software (written in C++, MacOS)

1998.06    developed as an independent software  (written in Java, UNIX)

2000.11    developed as an OpenGL based software (written in C/C++, Win32)

2002.04    released (version 1.0b)

2002.05    updated (a few bugs fixed) and released (version 1.01b)

2002.07    updated (see below) and released (version 1.10)
                - histogram widget enabled
                - jump (cursor) widget enabled
                - full OpenGL drawing on slice canvases (formerly gdk drawing)

2002.10    updated (see below) and released (version 1.28)
                - layout, object visibility widget enabled
                - change-channel button enabled
                - a few bugs fixed

2003.02    updated (see below) and released (version 1.32)
                - version of GTK+ updated (final of 1.3)
                - first/last-channel button enabled
                - a few bugs fixed

                Client Development Environment (CDE) version0.90 released

2003.06    updated (see below) and released (version 1.44)
                - semi-transparent slice display enabled
                - VOI and cursor tools updated
                - rotation of channel and whole volume in arbitrary angle enabled
                - standard plug-in LEGO-RENDER updated
                - a few bugs fixed
               
2003.12    updated (see below) and released (version 1.56)
                - 2D texture-based volume-rendering enabled
                - several shortcut key commands modified
                - greyscale tool added
                - standard plug-in SuiteMemory added (former CursorMemory)
                - standard plug-in LEGO-RENDER updated
                - a few bugs fixed
               
2004.08    updated (see below) and released (version 1.64)
                - suppoorting multi-thread processing in non-linear filters of plug-in
                - internal specification change for graphics objects
               
2005.09    updated (see below) and released (version 1.72)
                - 3D texture-based volume-rendering enabled
                - read/write ANALYZE(TM) format