The Web Image Analysis Program allows users to display and manipulate image data directly onto their computers. With this program, images may be displayed, zoomed and reduced. In addition, it also includes region of interest (ROI) definition, Time Activity Curve (TAC) for dynamic images and as well as other image processing capabilities such as color manipulation, image filtering and reslicing. The program can be run from any computer with a Java-enabled Web Browser (Netscape or Microsoft Explorer).