Method and system for rule-based anonymized display and data export
The invention provides, in some aspects, a system for implementing a rule derived basis to display anonymized image sets. In various embodiments of the invention, users with the appropriate permission can launch a function inside a system in order to anonymize and export the currently loaded study or studies, or one or more studies identified by a search criteria. The data from the studies that were identified is then anonymized on the system using predefined rules. In an embodiment of the present invention, the data from selected studies is anonymized on a server, and only then transmitted to another network device thus minimizing the risk that protected health information can be inadvertently disclosed. In an alternative embodiment of the present invention, the data from selected studies is anonymized on a server, and only the anonymized data is stored to the hard disk or other media of a user viewing the study.
1. A method of anonymously displaying a plurality of images comprising:
receiving from a client on a server digital data processor device a primary study, the primary study selected from a plurality of studies; and
executing on the server digital data processor device a render server program comprising:
a. applying two or more Study Selection Rules to generate a plurality of second studies based on one or more Digital Imaging and Communication in Medicine (DICOM) parameters from the primary study and/or one or more Abstract Tags from the primary study, where the plurality of second studies comprise an image and one or more PHI values (Protected Health Information values) overlaid on the image, where the plurality of second studies comprise the primary study and at least a secondary study, where an image set comprises the primary study and at least the secondary study;
b. applying one or more Protocol Selection Rules to select a Display Protocol, where the one or more Protocol Selection Rules are based on one or more DICOM parameters from the plurality of second studies and one or more Abstract Tags from the plurality of second studies;
c. applying one or more Viewport Assignment Rules to assign at least the primary study and at least the secondary study to two or more Viewports;
d. applying one or more Style Rules to the image set, where the one or more Style Rules are selected from a global ordered list;
e. receiving from the client a dialog for exporting data, where the dialog comprises an option to de-identify the one or more PHI values;
f. interrogating the dialog, where the option to de-identify the one or more PHI values is configured;
g. using a secure hash function to calculate one or more secure values to de-identify the one or more PHI values; and
h. displaying the image set in the two or more Viewports based on one or more of the one or more Protocol Selection Rules, and the one or more Viewport Assignment Rules, where at least one of the two or more Viewports displays the primary study, where at least one of the two or more Viewports displays the secondary study, where the one or more PHI values are replaced with the one or more secure values.
2. The method of claim 1 , where the primary study comprises a two dimensional image.
3. The method of claim 1 , where the primary study comprises a three dimensional image.
4. The method of claim 3 , where the at least one of the two or more Viewports displays the primary study as a first volume rendered image.
5. The method of claim 1 , where the secondary study comprises a three dimensional image.
6. The method of claim 5 , where the at least one of the two or more Viewports displays the secondary study as a second volume rendered image.
7. The method of claim 1 , where the one or more Style Rules are selected from the group consisting of a two dimensional image, a three dimensional image, an oblique image, a curved image, a maximum intensity projection (MIP) slab, a three dimensional image MIP, a volume rendering technique (VRT) and a shaded VRT.
8. The method of claim 1 , where the primary study comprises an image type ‘IMAGE TYPE 1’, where the secondary study comprises the image type ‘IMAGE TYPE 2’, where ‘IMAGE TYPE 2’ is not equal to ‘IMAGE TYPE 1’.
9. The method of claim 1 , where the primary study comprises a single reference image.
10. The method of claim 1 , where the primary study comprises one or more characteristics selected from the group consisting of anatomical location of the primary study, anatomical organ of the primary study, anatomical organ system of the primary study, anatomical tissue of the primary study, type of analysis of the primary study, type of condition of the primary study, type of treatment of the primary study, and type of disease of the primary study.
11. The method of claim 1 , further comprising a second Study Selection Rule of the two or more Study Selection Rules, where the second Study Selection Rule uses both one or more DICOM parameters from the primary study and one or more Abstract Tags from the primary study.
12. The method of claim 1 , further comprising a second Study Selection Rule, where the second Study Selection Rule comprises a pseudo-code:
“IF (Primary.Dicom.BodyPartExamined) is ‘ANATOMICAL REGION 1’ and (Primary.Dicom.Modality=‘IMAGE TYPE 1’), THEN SELECT (Other.Dicom.BodyPart Examined=‘ANATOMICAL REGION 1’ and Other.Dicom.Modality=‘IMAGE TYPE 2’)”, where IMAGE TYPE 1 is not equal to IMAGE TYPE 2.
13. The method of claim 1 , where a first secure value displayed corresponding to one or more first secure values in the primary study is the same as one or more second secure values in the secondary study when one or more first PHI values in the primary study are the same as one or more second PHI values in the secondary study.
14. The method of claim 1 , where the one or more secure values displayed cannot be used to generate the one or more PHI values.
15. The method of claim 1 , further comprising adding an institution aware ID to the one or more PHI values.
16. The method of claim 15 , further comprising adding a separator character to the one or more PHI values to give one or more concatenated values.
17. The method of claim 16 , where the secure hash function operating on the one or more concatenated values are used to generate the one or more secure values.
18. The method of claim 1 , further comprising adding a separator character to the one or more PHI values to give one or more concatenated values.
19. The method of claim 18 , where the secure hash function operating on the one or more concatenated values are used to generate the one or more secure values.
20. The method of claim 1 , where the secure hash function is impossible to invert.