T2 MR Perfusion of the Brain

Launching the T2 MR Perfusion of the Brain Program

• Left-click the "Programs" button in the Toolbar
• Click the button "Brain Perfusion T2"

If the T2 Brain Perfusion program does not launch - see below

Settings When Entering the Program

• Select a different series
• Determine the mask threshold to remove artifacts around the image
• Specify which series will serve as the bottom layer, and set its transparency with the slider
• Indicate the calculation start - start of the series, stable signal, or bolus
• Disable the "smoothing" parameters only if the image in the "T2 Perfusion" program appears blurry
• Specify the graph construction parameters

Appearance of the Perfusion Program

The Perfusion program header contains screen layout toggles
Possible options:

Main Mode

Maps

Selecting a Color Perfusion Map

• Click on the map name in the active overlay
• In the appeared list, click on the name of another map
• Maps already on screen are not available in the selection list

Maps and Tables

Correcting Reference Positions of Artery and Vein Cursors (if necessary)

• Scroll through the multi-volume in main mode (Button - - in the series header), (See Scrolling Through Multi-Volumes) until a volume with filled vessels appears
• Click the button .
• Correct the artery position:
  • hover the mouse cursor over the vessel cursor
  • press and hold the left mouse button
  • move the mouse to drag the vessel cursor
  • release the left mouse button
If the vessel is identified incorrectly by the program, scroll through the images to the best vessel display and click on the vessel
• Click the button
• Correct the vein position, mouse actions are similar to those described above
• Click again on the button to exit correction mode (the A and V buttons should be black)

Constructing Regions of Interest

Constructing Regions of Interest for Vascular Pathologies

• Correct the measurement reflection line
  Necessary for measurement accuracy
  On any image, align the measurement reflection line with the interhemispheric fissure
• Click the "Reflected Oval" button next to the Reflection Line button
• Construct an Oval on the image; it will automatically be reflected in the contralateral hemisphere
• Data for both areas will appear

Constructing Regions of Interest for Oncological Processes

• Construct any of the areas on any image
• Data for the constructed area will appear
• If reflection is needed (Reflection Line must be on screen - see above):
  Click the "More" button , then click the "Reflect Measurement" item

You can construct an unlimited number of areas on any of the images
Each area is identified by a number and color

Analyzing T2 Brain Perfusion

Editing Mathematical Data

• Viewing (selecting) data for a specific area
  • Hover the mouse cursor over the area name to the right of the graph,
  or
  • Click the column header in the table
• Editing graph points
  1. For convenience, double-click the numerical data panel to expand it to full screen
  2. Hover the mouse cursor over a graph point
  3. Press and hold the left mouse button
  4. Move the mouse
  5. Release the left mouse button
  6. Double-click the numerical data panel to collapse it to its original size
• Saving mathematical data
  • If a region of interest is not selected as above, then all data will be saved
  • Click the "Copy" button to copy the analysis results to the clipboard for pasting into a standard text document
  • Click the "Save" button to save the analysis results to a *.csv file for subsequent analysis in MS Excel
  • Click the "Print" button to send the analysis results for printing

Calculation Settings

• Click the "T2 Perfusion" button in the upper left corner of the program
• Click the "Calculation Settings" item
• Calculation Settings are described at the beginning of the article

Saving the Resulting Series

• Click the "T2 Perfusion" button in the upper left corner of the program
• Click the "Save Resulting Series" item
• The resulting series with all volumes (CBV, BAT, etc.) will be saved and located in the Preview Bar, at the very bottom of the current study

Note:
The state of the Perfusion program and all performed measurements are saved in the Study Finds
More details

Exiting the T2 Brain Perfusion Program

• Click the "T2 Perfusion" button in the upper left corner of the program.
• Click the "Exit Mode" item.
• The T2 Brain Perfusion program will be replaced on screen by the series from which it was constructed.

If the "T2 Brain Perfusion" program does not launch

• Ensure that the necessary series are present in the study
• If not, click the "OK" button to cancel T2 Perfusion construction

If you are sure that the necessary T2 series for constructing Perfusion are present in the study:
• Click the "More..." button



• Click the "Writing the Study.." button
• The study will be automatically anonymized and packaged
  Choose a location on the disk to save the archived study file with the "zip" extension
• Send the obtained zip file to the programmers of PO Vidar LLC at med@povidar.ru, along with a description of the problem
The programmers of PO Vidar LLC will try to resolve the issue as soon as possible