1. Copyright © 2015, Oracle and/or its affiliates. All rights reserved. | BDB-DICOM Sample Program Capturing and using large data objects with BDB Berkeley DB 1

2. Copyright © 2015, Oracle and/or its affiliates. All rights reserved. | The Purpose The purpose of the sample program is to demonstrate how to use Oracle Berkeley DB in medical mobile applications. – It illustrates how Oracle Berkeley DB can be used to store, retrieve and query DICOM files for offline usage on Windows mobile devices – The sample program is written as a proof of concept, and is not supposed to be used directly in production. The sample program is built with the typical three-tier architecture – Oracle DB as the persistent layer – The sample program includes both a server program and a client program for Windows mobile devices – The client program uses Oracle Berkeley DB for offline storage 2 Berkeley DB

3. Copyright © 2015, Oracle and/or its affiliates. All rights reserved. | Issues/Trends/Challenges in Health Industry 3 Unable to share patients’ medical images between systems, labs, hospitals. Hard to search and manage. ISSUES Centralized management in DICOM-tailored database - Oracle Database Multimedia. Digitalization and telemedicine Doctor needs fast, easy access - local persistence. Multiple Data Sources needs embedded database Telemedicine - anytime and anywhere? Oracle Differentiator TRENDCHALLENGES Oracle Database 12c Multimedia DICOM Berkeley DB

4. Copyright © 2015, Oracle and/or its affiliates. All rights reserved. | Architecture DICOM Server OracleDatabaseMultimedia BDB Client HTTP JDBC HTTP Request Stream Group db file or data stream db file or data stream db file or data stream Berkeley DB4

5. Copyright © 2015, Oracle and/or its affiliates. All rights reserved. | The Coding The sample server is written in Java. It is responsible for serving client requests by retrieving DICOM objects from Oracle database and sending them to clients in a custom-made protocol. The sample client is written in C++. To support offline access to the DICOM objects, Oracle Berkeley DB is used to provide persistent cache of the objects. 5 Berkeley DB

6. Copyright © 2015, Oracle and/or its affiliates. All rights reserved. | BDB-DICOM Client on Mobile Device Download & Storage Download with HTTP protocol Store serialized DICOM into BDB – DICOM = Key: DICOM id in Oracle database Value: Predefined subset of DICOM metadata – Consistent with DICOM but more compact ContentDICOM DICOM in DB Oracle databaseBDB Format Single file (X~XX MB) Blob (X~XX MB)Stream (X~XX KB) Metadata 2000+ XML metadata 2000+ attributes from XML in blob Predefined interesting attributes’ ImageBinary dataImage data in blobThumbnail Berkeley DB6

7. Copyright © 2015, Oracle and/or its affiliates. All rights reserved. | BDB-DICOM Client on Mobile Device Query & Retrieval List DICOM in BDB – List grouped attributes – Display thumbnail (JPEG) Query on attributes – Single query: $attribute = value – Combinational query: “AND” Query hint – List all attributes – List all values on common attributes (patient’s name, modality, etc) Query checking – Immediate checking on queried attribute’s name PatientStudyAcquisition name, sex, birth day, history, etc date, description, institution name, etc operator, manufacturer, time, date, etc Berkeley DB7

8. Copyright © 2015, Oracle and/or its affiliates. All rights reserved. | BDB-DICOM Client on Mobile Device Update & Delete Modify DICOM attribute – Partially update the old record in BDB – Avoid rewriting other attributes and image content Length value ID Length value Length value … … Length value Berkeley DB8

9. Copyright © 2015, Oracle and/or its affiliates. All rights reserved. | Accessing the demo YouTube: https://www.youtube.com/watch?v=zpFrgXgSXrY OTN: http://www.oracle.com/technetwork/database/database- technologies/berkeleydb/learnmore/index.htmlhttp://www.oracle.com/technetwork/database/database- technologies/berkeleydb/learnmore/index.html – Look for “DICOM video walkthrough” 9 Berkeley DB