1. Basic Validation of DICOM objects using DVTk
Piyush B
DVTk developer
Piyush B

2. Basic Validation of DICOM objects
media\media.pdvt
Validation Concept
Definition Files
Media Validation
Validation Results and Analysis
Easy to Use DVT Scripts
Piyush B

3. Overview of DVT Media files Scripts Emulator Definition-file
Session-file
Project-file
XML Results file
Image files (dcm, pix)
Media files
Scripts
Emulator
DICOM via TCP/IP
System under Test
Test System

4. Capabilities
Data driven tool and core is independent of specific DICOM SOP Classes and Test Cases - allows future extension as the DICOM Standard evolves.
Capable of playing the role of SCU and SCP.
Emulator for Verification, Storage and Print SOP Classes.
Media File validation.
Provides clear test results - including a summary of errors / warnings.
Support for TLS and SSL secure sockets.

5. DVTk validation can be identified as:
Validation of Association Negotiation Control Service Elements (ACSE’s) - Association Request, Acceptance, Rejection, Release and Abort support.
Validation of DICOM Message Exchange (DIMSE’s) - Service Object Pair Class support.

6. Validation against the DICOM Standard and/or System Definition
DVT provides an independent measurement of the accuracy of the Product‘s DICOM interface according to the
DICOM Standard
Product‘s Conf. Statement
Input in DVT for this information is the ‘Definition File’.

7. Real DICOM Object via TCP/IP
Validation Concept
Real DICOM Object via TCP/IP
System under
Test
Definition
Object
Reference
Validation Results
DVT
Report
Piyush B

8. DICOM Definition File The Definition Files provide DVT with the DICOM
specific knowledge to enable a validation.
Describes a single DICOM SOP class
Example: Storage SOP Class ‘SC Image‘
Corresponding File: SecondaryCapture.def

9. Content of a Definition File
Attribute Condition
Attribute Type
Attribute Values
Multiplicity
Attribute Tag
Value Representation
Attribute Name

10. Results Files
DVT stores the results of each test (either by Scripts, Media Validation or Emulation) in ‘XML’ files.
Two types of XML files
Detailed (all DVT output logged)
Summary (only errors and warnings are logged)
DVT uses a XSLT style sheet for displaying the XML files.

11. 2 types of Results files

12. DVT Results Reporting Results are generated in XML
Easily data exchange
Can be handled as data
Presented in HTML
Can be customized by changing the style sheet
Gives you the advantages of HTML web pages
Generate overall test reports
Easily include multiple test data
Include test analysis data

13. DVT Results Reporting

14. DVT Results Reporting

15. Media Validator
DVT can validate the content of a DICOMDIR and a DICOM Media file.
Media Read
DICOM Object
SOP Class X
Test System

16. Media Results Files
DVT writes one summary and one detailed XML file for each:
Directory Record
DICOM file
When the media validation is completed DVT generates an summary and a detailed index XML.

17. Validation of a DICOMDIR
DVT will validate
the structure of the DICOMDIR
check the presence of the referenced files
the referenced and present DCM file against the SOP Class definition of the DCM File
| VALIDATION RESULTS for DATASET File Meta
|=================================================================
| "Dicom Meta Information" M |
|V |Tag |VR|VT|P|Value(s) |Name/Results
| |(0002,0000) |UL|1 |+|0x000000BA= |Group 0002 Length
| |(0002,0001) |OB|1 |+|"C:\Program Files |File Meta
| | | | | |\DVT\media | Information
| | | | | |\B08_0026.pix" | Version
| |(0002,0002) |UI|1 |+|" |Media Storage SOP
| | | | | | " | Class UID
| |(0002,0003) |UI|1 |+|" |Media Storage SOP

18. DICOMDIR Results Files

19. DVT Script Types Script Types DICOM Scripts (DS)
DICOM Super Scripts (DSS)
Visual Basic Scripts (VBS)
Script Approach
Simple DICOM Command based (DS/DSS)
Advanced Multi-Threaded Event Driven (VBS)
Simple
Advanced

20. DVT Script Types
Example of a DICOM Script
Simple

21. DVT Script Types
Example of a Visual Basic Script
Advanced

22. Running a SuperScript using DICOM and system Definition Files
storage.pdvt
store_scu.ses
store_scp.ses
Script session
Script session
Association RQ
Association AC
Store RQ
‘Image Y’
Store RSP
‘Image Y’
Release RQ
Release RSP
store_scu.dss
Test System
Piyush B

23. Example scripts Example: Verification Example: Modality Worklist
Execute SCU against SCP
verification.pdvt (SCU and SCP 1 script)
Example: Modality Worklist
worklist.pdvt (SCU and SCP 1 script)
Example: Storage
storage.pdvt (SCU and SCP 3 script)
Piyush B