NOTE: As of November 2018, the new home of DICOM4QI is here: https://dicom4qi.readthedocs.io

Pixelmed

1.Description of the platform/product:

2.Description of the relevant features of the platform:

  • are both single and multiple segments supported? not clear (as tested by Andrey Fedorov)
  • how are the overlapping segments handled? N/A

  • do you support both BINARY and FRACTIONAL segmentation types? not clear (as tested by Andrey Fedorov) TBD

  • do you render the segment using the color specified in the DICOM object? no
  • how do you communicate segment semantics to the user? not available
  • how do you support the user in defining the semantics of the object at the time segmentation is created? the tool is a viewer only, not applicable

3.Read task: load each of the DICOM SEG datasets that accompany the imaging series into your platform

Steps to load DICOM SEG into Pixelmed image viewer:

1. Convert image dataset into multiframe using script such as below (parameters: input single-frame DICOM directory, and the directory for the output multiframe image):

#!/bin/sh

PIXELMEDDIR=.

java -Xmx2g -Xms512m -XX:-UseGCOverheadLimit -cp "${PIXELMEDDIR}/pixelmed.jar:${PIXELMEDDIR}/lib/additional/commons-compress-1.9.jar:${PIXELMEDDIR}/lib/additional/commons-codec-1.3.jar:${PIXELMEDDIR}/lib/additional/vecmath1.2-1.14.jar" com.pixelmed.dicom.MultiFrameImageFactory $*

2. Display SEG in overlay using the following command (parameters: multiframe DICOM image, and DICOM SEG image):

java -Xmx2g -Xms512m -XX:-UseGCOverheadLimit -cp "${PIXELMEDDIR}/pixelmed.jar:${PIXELMEDDIR}/lib/additional/commons-compress-1.9.jar:${PIXELMEDDIR}/lib/additional/commons-codec-1.3.jar:${PIXELMEDDIR}/lib/additional/vecmath1.2-1.14.jar" com.pixelmed.display.SuperimposedDicomSegments $*

Test dataset #1

Test dataset Result of rendering
3D Slicer
Brainlab
syngo.via
AIMonClearCanvas

Test dataset #2

Test dataset Result of rendering
3D Slicer
Brainlab

Notes:

  • Appears that only one segment can be displayed in a slice at a time.
  • Possible errors rendering Brainlab dataset. Runtime errors:
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: Coordinate out of bounds!
    at sun.awt.image.IntegerInterleavedRaster.getDataElements(IntegerInterleavedRaster.java:219)
    at java.awt.image.BufferedImage.getRGB(BufferedImage.java:918)
    at com.pixelmed.display.SuperimposedImage$AppliedToUnderlyingImage.notificationOfCurrentLocationIn3DSpace(SuperimposedImage.java:224)
    at com.pixelmed.display.SingleImagePanel.updateStatusBarValues(SingleImagePanel.java:1039)
    at com.pixelmed.display.SingleImagePanel.mouseMoved(SingleImagePanel.java:993)

Test dataset #3

Test dataset Result of rendering
3D Slicer

Test dataset #4

Test dataset Result of rendering
3D Slicer

4.Write task

Application evaluated is viewer only. Pixelmed has capabilities of writing DICOM SEG objects, but those were not evaluated.