iSite 3.5: User Preferences

1. iSite 3.5: User Preferences

2. Learning Objectives Understand the purpose and configuration of: • General Preferences • Window Width/Center • Image Processing • Filters • Display Preferences • Hanging Protocols (iSite Radiology only) • Canvas Page (iSite Radiology only)

3. Table of Contents • Preferences Dialog • General Preferences • Window Width/Center • Image Processing • Filters • Display Preferences • Hanging Protocols (iSite Radiology only) • Canvas Page (iSite Radiology only)

4. Preferences Dialog

5. User Preferences • User Preferences configure preferences for the currently logged in user • System Preferences configure system-wide settings for every user • Machine Level Preferences configure settings for the machine on which the user is currently logged in • User Preferences are associated with the Security Code ISTUSRPREF

6. Importing and Exporting Preferences • Importing and Exporting Preferences • Many preference settings can be imported and exported to facilitate setting up User and System Preferences • The User Preferences that can be imported and exported are Window Width/Center and Filters • The System Preferences that can be imported and exported are Window Width/Center, Filters, Annotation, DICOM Sources, Screen Overlays, Paper Printing, Organization Dictionary, Location Dictionary and Body Part Dictionary • Please note that importing preferences will override any preferences in the system

7. Preferences Dialog • Preferences can be accessed by selecting the ‘P’ icon in the upper-right corner of the iSite Control Strip

8. General Preferences

9. General Preferences • To configure your General User Preferences, click the ‘General Preferences’ listing and edit the options as desired for your iSite Radiology account

10. Main Exam Monitor Layout • Main Exam Monitor Layout allows users to specify the monitor on which current exams (versus prior exams) will be displayed

11. Main Exam Monitor Layout • ‘Two Monitor’ (dual diagnostic monitor workstations) selection allows current exams to be displayed on the left or right monitor

12. Main Exam Monitor Layout • ‘Four Monitor’ (four diagnostic monitor workstations) allows current exams to be displayed on the left two monitors, the right two monitors or the middle two monitors

13. Main Exam Monitor Layout • For customers who have the ‘Monitor Split Mode’ option enabled • The ‘Monitor Split Mode’ option will display the active exam as specified in the ‘Four Monitor’ option in the ‘Main Exam Monitor Layout’

14. Main Exam Monitor Layout • The ‘Monitor Split Mode’ is enabled on the fourth (and last) page of the Hanging Protocols Wizard • The ‘Monitor Split Mode’ is used to emulate two or four diagnostic monitor workstations for one and two diagnostic monitor workstations respectively

15. Canvas Page Mode • “Canvas Page Mode” options specify whether exams displayed in your Canvas Page are organized by patient or by exam

16. Canvas Page Mode • ‘Patient Based Mode’ will allow only one “Main Exam” per patient to be open at a time • ‘Exam Based Mode’ will allow multiple “Main Exams” per patient to be open at a time

17. Automatically Open Next Exam • If you wish iSite Radiology to automatically open the next exam in Worklist Filters when you mark an exam “Read” click the corresponding checkbox

18. Show Tips at Startup • The ‘Tip of the Day’ may be disabled by un-checking the “Show tips at startup” button

19. Tip of the Day • Alternatively, If you wish to disable the ‘Tip of the Day’ uncheck the “Show tips at startup” checkbox while viewing the ‘Tip of the Day’

20. New Features • The ‘New Features’ dialog will display upon the first log-in following a system upgrade

21. Disable Navigation Rectangle Splitting • Users who wish to disable Navigation Rectangle Splitting for Canvas Page Navigation Rectangles may select the “Disable Navigation Rectangle Splitting” checkbox

22. Disable Navigation Rectangle Splitting • The red rectangles shown on the Canvas Page indicate which images are displayed on the diagnostic monitors • The rectangles may be split in order to display nonadjacent series or even series within prior exams

23. Disable Navigation Rectangle Splitting • Demonstrated at left are series from two exams • The Navigation Rectangles in the upper left corner of each series indicate the placement of each series on the diagnostic monitors • If the ‘Disable Navigation Rectangle Splitting’ option is active then this is not an option

24. Show Measurements Palette • Users who wish to display the measurements palette automatically when viewing images, may select the “Show Measurement Palette” checkbox

25. Display Key Image Stack • Users who wish to display the Key Image Series at the beginning of the Exam Rack, may select the “Display Key Image Stack” checkbox

26. Anatomical Right on Left Side of Image Window • Please note that the visibility of this option is dependent on the System Preferences set by your institution's iSite System Administrator

27. Anatomical Right on Left Side of Image Window • Users who wish to automatically display axial and oblique CTs with the anatomical right displayed on the left, regardless of the initial orientation of the image, may select the “Axial/Oblique CT:…” checkbox

28. Window Width/Center

29. Window Width/Center • Users may select the Window Width and Center dialog to add, modify or delete the default preset window width and center values display

30. Add Window Width/Center • The Add Window Width/Center may be used to create new Window Width/Center presets by establishing a name, indicating the Modality and settings the Width and Center

31. Window Width/Center • To edit a window width and center setting “double click” a listing or highlight a listing and click the ‘Properties’ button • When you have finished making changes, click ‘Apply’ and then ‘OK’ to save and exit the Dialog box

32. Window Width/Center • Window Width/Center settings are mapped to the number keys in the order displayed on the list

33. Image Processing

34. Image Processing • Edge Enhance: Uses a Laplacian method to increase the visibility of edges in the image • Edge Detection: Provides an alternative to the Edge Enhance tool, using a Sobel operator to increase the visibility of edges • Median Filtering: Uses a common filtering method to reduce noise in an image • CLAHE (Contrast Limited Adaptive Histogram Equalization): Utilizes an adaptive form of histogram equalization that enhances the contrast adaptively across the image

35. Image Processing • Image Processing Filters have several configurable parameters which may be configured by each individual user

36. Image Processing • Image Processing Filters can be applied manually (via a right mouse click option) • Any time an Image Processing Filter is applied to an image, iSite displays a “P” (Processed) Icon in the meta data area of that image

37. Image Processing – Edge Enhance • ‘Edge Enhance’ is performed with a Laplacian operator to discriminate the edges; the result is scaled and added back into the original image data

38. Image Processing – Edge Enhance • The intensity of ‘Edge Enhance’ is controlled by the “degree” parameter which can be “Light”, “Medium” or “Strong” • Edge Enhancement is applicable on any monochrome image

39. Image Processing – Edge Enhance The image on the right side has the ‘Edge Enhance’ filter applied

40. Image Processing – Edge Detect • This class of algorithm accentuates the rising and falling components of edges • This is done with a Sobel operator; the result is scaled and added back into the original image data

41. Image Processing – Edge Detect • The intensity of ‘Edge Detect’ is controlled by the “degree” parameter which can be “Light”, “Medium” or “Strong”

42. Image Processing – Edge Detect The image on the right side has the ‘Edge Detect’ filter applied

43. Image Processing – Median Filter • ‘Median Filter’ is used as a noise reduction filter • Neighborhoods around each pixel are sampled and the central pixel is replaced with the median value of the neighborhood

44. Image Processing – Median Filter The image on the right side has the ‘Median Filter’ applied

45. Image Processing - CLAHE • Contrast Limited Adaptive Histogram Equalization (CLAHE) is a variant of histogram equalization • The draw back of the general histogram equalization method is that the computation is performed across the entire image

46. Image Processing - CLAHE • In medical images, the local behavior of the histogram can be radically different than either the global, or non-local behavior • This class of method performs the histogram equalization on a parameterized region-by-region basis and stitches the results to prevent any boundary edges

47. Image Processing - CLAHE • The following parameters can be set via the “Preferences” • Contextual Region Dimension • Number Of Bins • Clip Limit • Map Level

48. Image Processing – CLAHE The image on the right side has ‘CLAHE’ applied

49. Filters

50. Filters • Filters allow you to create custom search criteria for Worklists