XMedCon

Nolf E, "XMedCon - An open-source medical image conversion toolkit";
European Journal of Nuclear Medicine; Vol. 30 (suppl. 2); 2003; pp S246; TP39.

The supported formats are:

Acr/Nema 2.0, Analyze (SPM), Concorde/µPET, DICOM 3.0, CTI ECAT 6/7, NIfTI-1, InterFile3.3 and PNG or Gif87a/89a.

In addition, the program allows to read unsupported files without compression, to print pixel values or to extract/reorder/reslice study images. It is possible to export images as PNG or annimated GIF for desktop applications. Its library can be used as a framework.

完整的官方说明：http://xmedcon.sourceforge.net/Main/Documentation