Field II is a program for simulating ultrasound tranducer fields and ultrasound imaging using linear acoustics. The programs uses the Tupholme-Stepanishen method for calculating pulsed ultrasound fields. The program is capable of calculating the emitted and pulse-echo fields for both the pulsed and continuous wave case for a large number of different transducers. Also any kind of linear imaging can be simulated as well as realistic images of human tissue. The program is running under Matlab on a number of different operating system (Windows, Linux, Mac OS X, HP-UX, SUN, SGI, IBM and Alpha), and the programs are currently free to use under certain restrictions (see copyright).

The latest release of the program is version 3.16 of December 18, 2007. Note that this code will work with Matlab 7.3 and 7.5 under Linux and Windows in both 32 and 64 bits versions. A version for the Intel Mac has also been made.

There is problems with Matlab version 7.8 and the 7.6 code. A new 64 bits version for Linux and Matlab 7.8 has been made, and can be found at: ?downloading_7_8.html . More versions will be added once they are compiled.

The lates News is from June 30, 2009 on the Matlab 7.8 version.