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Consistent Presentation of Images Integration Profile Tutorial

This solution aims to resolve the consistency problem among softcopy and hardcopy images viewed on different display devices and printers from different vendors. It involves standardizing the calibration of display and output devices using the DICOM grayscale standard display function (GSDF) and creating hardcopy output using DICOM basic print with presentation LUT support.

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Consistent Presentation of Images Integration Profile Tutorial

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  1. Consistent Presentation of Images Integration Profile Tutorial Ellie Avraham Kodak Health Imaging IHE Planning and Technical Committees HIMSS / RSNA

  2. Consistent Presentation of Images Objectives • Resolving the Consistency problem among Softcopy Images viewed on different Display devices (from different Vendors). • Display Devices vary in their capabilities: Luminance range, Monitor Display Resolution and Display Characteristic Curve. • [Show two different Diagnostic Workstations (from different Vendors) Retrieving and displaying the same image and having the same reading view.] • Resolving Consistency among Hardcopy Images Printed on different Laser Imager (from different Vendors). • Hardcopy Devices vary in their capabilities: Optical Density range, Printer Resolution and Printer Characteristic Curve. • [Show on a Light-box two Films printed on different Laser Printers (labeled from different Vendors) having both the same reading view.] • Consistency view among Mixed Hardcopy and Softcopy Images. • [Retrieve an Image and display it on a Workstation (that have a Print Composer) and then send the same displayed image to a Laser Printer. Show the Printed Image on the Light Box has the same reading view as the displayed image on the Workstation] HIMSS / RSNA

  3. Consistent Presentation of Images Solution Requires: 1 • Standardize (Calibrate) the Softcopy Display (Workstation) and the Hardcopy (Laser Printer) Output Devices using the DICOM Grayscale Standard Display Function (GSDF). • 1. [Show the calibration of a Softcopy Workstation with a Photometer, Slide #4] • 2. [Show a picture of calibrating a Hardcopy Printer with a Densitometer, Slide #5] The GSDF transformation defines the mapping of the P-values to the display Luminance or Optical density values, and is preserving the Human perceptual response, based on the Human Contrast Sensitivity [Barten model]. HIMSS / RSNA

  4. Printer Calibration Tools (Densitometer) HIMSS / RSNA

  5. Display Calibration Tools (Photometer) HIMSS / RSNA

  6. Consistent Presentation of Images Solution Requires: • Creating Hardcopy Output Using DICOM Basic Print with Presentation LUT Support for controlling the consistent appearance of pre-formatted images on printed output 2 [Show the Basic Print Management with Presentation LUT, slide #7] HIMSS / RSNA

  7. Basic Print Request with Presentation LUT Print Print Composer Server Print Composer Print Request DICOM Film Session N-CREATE DICOM Presentation LUT N-CREATE DICOM Film Box N-CREATE DICOM Image Box N-SET DICOM Film Box N-ACTION DICOM Film Session N-ACTION Print Server Print Status (DICOM N-EVENT-REPORT) Printer Status HIMSS / RSNA

  8. Consistent Presentation of Images Solution Requires: • Saving the Softcopy Display Viewing Parameters using DICOM Grayscale Softcopy Presentation State (GSPS) 3 Grayscale Softcopy Presentation State (GSPS), is an object for storing and communicating the parameters that describes how an image or a set of images should be displayed. A GSPS object contains references to the images it applies to, and the transformations (grayscale transformations, shutter transformation, image annotation, spatial transformations, and displayed area annotation) that should be applied when the images are presented on a softcopy display, or printed on film. HIMSS / RSNA

  9. What the Radiologist Displays: What the Reviewing Physician Sees: Area Of Interest Area Of Interest Flip Zoom Annotate Original Image Original Image Window Level Consistent Presentation of Images On a Calibrated Display With Presentation State The Radiologist’s Transformations Are Saved Original Image Inconsistent Presentation On an Uncalibrated Display Original Image The Radiologist’s Transformations Are Lost HIMSS / RSNA

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