Oncology information system
Oncology Information System (OIS) is a software solution that manages departmental, administrative and clinical activities in cancer care. It aggregates information into a complete oncology-specific electronic health record to support medical information management. The OIS allows the capture of patient history information, the documentation of the treatment response, medical prescription of the treatment, the storage of patient documentation and the capture of activities for billing purposes. Unlike a hospital information system (HIS), which is intended to manage patient records more generally, or radiological information system (RIS), intended to track and manage radiology requests and workflow, the OIS supports the delivery of integrated care and long-term treatment for cancer patients by collecting data during various phases of treatment, maintaining a history of treatment fractions, screening, prevention, diagnosis, image reviews, palliative care and end-of-life care. An OIS will be designed around the specific requirements of chemotherapy, radiotherapy and other supportive activities. Basic features of an OIS 
OIS generally support the following features:

 Treatment workflow
 Doctor's prescription
 Patient register
 Management of the treatment schedule
 Management of patient documents
 Financial control
 Health Level 7(HL7) and DICOM RT interoperability

References 

Radiation therapy
Medical physics
Electronic health records