This paper introduces the technical progress of the emission computed tomography (ECT) device in these years. As the latest technical advance and applications in nuclear medicine imaging, the features, performances and applications of CTs of dual-head coincidence (DHC) single photon emission computed tomography (SPECT) and positron emission computed tomography (PET) are discussed.

This paper introduces a multi-function DSA image workstation, the main structure is described. The structure of software system are emphasized on. The image workstation has a variety of functions, such as image acquisition, data transferring, archiving and processing. The client/server software modules is used for digital image processing and communication in medicine.