INTRODUCTION
PACS is the infrastructure of:
Hospital Operations: It gives faster and more widely available access to images and reports； offer the potential for saving in clinician time and patients length of stay.
Radiology Operations: It provides timely access to the images to improve the patients flow, throughput and image reporting.
Case Management: It can provide image data systems to be applied in the presentation of case review conferences.
Teaching Files: Both educational and clinical goals are enhanced by convenient access to teaching cases during reading sessions.
Multimodality Image Fusion: Eliminates the need of multiple single-connections.