On-line access to data and imagery allows the physician to retrieve, at any moment, all the information concerning a patient, pathology or a treatment. All the images can be seen either on a one after one basis or simultaneously according to their type, to a particular patient or to a specific pathology. Size and order can also be changed regarding particular needs. Remarks by a technician or another physician may be read, and if necessary, the physician is able to add his own comments.