Abstract: We introduce a CORBA-based medical image analysis and modeling system, which is platform independent and provides high accessibility and usability of the system for the users at remotely located sites. The system allows us to manage datasets and manipulates medical images such as segmentation and volume visualization of computed geometry from biomedical images in distributed environments. Using an active contour model and additive re-projection, the system provides boundary information of specific tissue and real time rendering of the 3D volume. In addition, it supports collaborative work among multiple users using broadcasting and synchronization mechanisms. For the development of the system we adopted the DICOM(Digital Image and Communications in Medicine) standard for a method of transferring images and associated information device. Since the system is developed using Java and CORBA, which provide distributed programming, the remote clients can access server objects via method invocation, without knowing where the distributed objects reside or what operating system it executes on.