MRI Protocols Post-Processing
Miscellaneous MRI Post- Processing
Obtaining Numeric ADC ValuesSeperating Phases for CINE SequencesVolume Analysis
Axial Cine Post Processing
How to obtain actual numeric ADC values (rather than a map) for a region of interest on our Philips scanners:
- Open the ADC image in the "Basic Viewing" screen (where the hardcopy options are).
- Right click on the image, select ROI from the menu. You can choose the shape desired.
- Draw an ROI where desired.
- A number will come up on the ROI that you just drew. Right-click on the number to get the sub-menu for the number.
- From the sub-menu, choose "Statistics".
- A new window will open.
- The "Mean" value is the ADC value (to get regular ADC units divide by 1000000 aka 10-6). It is on the first line of data (below image).
- You can save a screen capture of the ADC map with the statistical data by choosing a system screen capture.
- Push screen capture to pacs.
- Go to the Advanced Viewing page (the “pumpkin” button on upper left)
- Choose the cine sequence from the thumbnails
- Right click on the thumbnail, and choose “IMAGE ALGEBRA”
- The image will open on the right ride of the screen in all 4 boxes
- Start with the upper left box:
- You’ll see 4 grey bars. These are actually two sets of bars, broken down into “Phases” and then “Types”.
- Using the “Types” set:
Slide both bars all the way to the right to choose the 3rd phase (the gray one). It should be the same in all three windows.
- Next, using the “Phases” set”:
click on the blue icon to the right of the “A” button and the “B” button (it looks like stacked files)
- The bar will turn solid grey, and all of the phases will be selected.
- Move your mouse to the menu bar directly above the image window.
- From the drop down menu, choose “Addition: (A+B)”.
- Click on the “star man” icon to the left to generate series.
This is meant to be a quick post-processing guide for post-processing a Axial Cine and adding CINE Axial to patients with headache or Chiari. Contact Jeff Pollock with any questions or comments regarding image quality.