Philips Azurion - 10.5.4 Analysis Task; Defining the Region of Interest; Defining the Region of Interest Automatically; Defining the Region of Interest Manually

10.5.4 Analysis Task
Y
ou use the Analysis task to idenfy and mark the contours of the coronary or vascular artery.
You can analyze subtracted and unsubtracted images in QVA, but you can analyze only unsubtracted
images in QCA.
Dening the Region of Interest
You can dene the contours of a region of interest automacally (“one-click” method), or by manually
placing points along the centerline of the vessel.
At any me, you can delete the contours and start over by selecng Delete in the control panel.
Dening the Region of Interest Automacally
This is also known as the “one-click” method. Measurements and graphs are displayed when the region
of interest is dened.
1 Click the Analysis task.
2 Click Idenfy Vessel Segment in the control panel.
3 Double-click on the stenosis in the center of the vessel to detect the contour of the vessel.
4 To adjust the contour, see Eding the Contour (page 164).
Detected contours may not be correctly aligned with the vessel wall if there is insucient contrast in
the image, or if a bifurcaon or overlapping vessels are present.
Dening the Region of Interest Manually
This method allows you to dene the region of interest by placing points along the centerline of the
vessel. Measurements and graphs are displayed when the region of interest is dened.
1 Click the Analysis task.
2 Click Idenfy Vessel Segment in the control panel and do the following:
• Click the centerline of the vessel to place the start point of the region of interest.
• Connue placing points along the centerline and double-click to place the end point and to
detect the contour of the vessel.
Eding the Contour
If the contour for the vessel segment is not sasfactory, you can edit the contour manually.
When eding a contour, you must start and nish the edit on the exisng contour. The pointer changes
to indicate that you are close enough to the contour.
For addional informaon, click Help in the control panel.
1 In the analysis task, click Edit.
2 To edit the contour by clicking, do the following:
2D Quant
ave Analysis (Opon) QCA / QVA
Azurion Release 1.2 Ins
trucons for Use 164 Philips Healthcare 4522 203 52421