Managing Digital Subtraction Angiography
Introduction
Digital Subtraction Angiography (DSA) enables the Synapse Viewer to utilize and apply DSA to x-ray angiography (XA) images. DSA is a feature in which a multiframe dataset and one or more particular frames of that series can be referred to as a Mask, as defined in the DICOM header. Other frames have that Mask image subtracted from it.
By default, this feature is enabled for images with specific DICOM header information, and can be disabled for those images by selecting it in the right-click context menu.
|
Note: |
This feature only supports Average Subtraction utilizing the information defined in the DICOM header. The bookmarking feature is disabled for DSA images. |
Saving a Snapshot with DSA
Steps
- Right-click an image and select Image Presets.
- Select Digital Subtraction.
- Click the Snapshot
icon to save the current layout and image properties.
Results
The current selected DSA state is saved as part of the snapshot, Synapse will resume the DSA state that existed when the snapshot was taken.
Saving a Presentation State with DSA
When you save a presentation state, the current DSA state is saved as part of the presentation state and will be set accordingly, as part of the default initial state for subsequent reloads of the image. See Saving Presentation State.
Exporting DSA Images
Synapse supports exporting DSA XA images in any of the following image formats:
- PNG
- JPEG
- AVI
- Copy to Clipboard
- Copy Clipped Image
- DICOM Transfer (export to media)