EVEN BETTER
WAYS TO STUDY
MICROCIRCULATION

NEW UNIQUE FEATURES

1. Line of interest (LOI)

Line of Interest (LOI) is greatly improving the versatility of the PeriCam PSI in addition to the Region of Interest  (ROI) and Time of Interest (TOI). With this tool, you can get a cross section of your perfusion image. Simply draw a line of the image and get your cross section. Choose whether you want it to be valid for a range of images or a single image and 1 or several pixels wide. You have the option to add several LOIs if you like. Line of Interest can be used in many different ways, for example to see gradients in perfusion or for estimating the size of features such as vessels in the perfusion image.

Figure 1: The LOI function used on a mouse brain recording

2. Grid

Grid overlay allows you to visualize the size of details in your perfusion im­ages in a new dimension. Define the grid spacing in real-life length units and toggle the grid on or off at your convenience. In addition, the grid can be shown in the report or export­ed in an image file as well. The grid is optimized for visibility over the wide range of colors in the perfusion images.

3. Mirror ROIs

The possibility to mirror ROIs is now added to the already versatile ROI tools that allow copying, pasting, moving, rotating, etc., and now also mirroring ROIs. Are you measuring on a subject with some symmetry? Just draw a ROI, copy it and mirror the copy to ensure you have the same ROI on both halves of your subject. Simply right-click on the ROI and choose “flip horizontally” or “flip vertically” to make it happen.

4. Reference lines

Reference lines can now be defined as visual aids in your graph. If you want to measure a return to baseline, you can just check your perfusion values. But what if you could visualize it as well? Or show an average perfusion in a rapidly changing signal? Now you can define reference lines in your graph. Drag the lines to the right level or define a value manually. You can customize the colors of the lines in whatever way fits you best.

5. Apply ROI changes for a range of images
Sometimes your subject – or camera – will just not stay in the same position during a re¬cording. Then suddenly your ROI (Region Of Interest) is not in the right position. Now you can apply edits to you ROIs for a range of images instead of for the whole recording or to the end of the recording. You can define the range by entering the starting and ending images or, even better, just define the range by drawing a time of interest. But it doesn’t end at correcting for movements. How about only defining a ROI within a certain time of interest, while it simply doesn’t exist in the rest of the recording.

6. Discrete color scale
A discrete color scale gives you more control over the visualization of your perfusion image. The continuous color scale for perfusion images is a great way to visualize the perfusion images, but sometimes you work with specific threshold values and would like to visual¬ize those clearly. Enter the discrete color scale. Create a customized color scale with up to six freely definable colors and set the threshold value for each color to optimally fit for your application.

7. View and export images in full resolution
PeriCam can capture very high-resolution images. So high that sometimes the computer screen resolution is not enough to show every detail that has been recorded. To get the most out of your images, you can now zoom in to a part of your perfusion image to explore every little detail. There is also a new option to export images in their original resolution for no single detail to get “lost in translation”.

8. Audit log
The Audit log gives a quick overview of which changes were made and by whom. We live in a world where data security becomes more and more important. The PSI now takes a step in the direction of a more secure system by introducing an audit log. This log keeps track of when the program is started and stopped, when recordings are started and stopped and what changes are made to existing recordings and patients. All of this is logged including the windows user who was logged in at the time.

Note
PIMSoft 1.6 is developed for PSI NR and PSI HR without zoom functionality (Firewire communication),
with S/N PSIH-1xxxx or PSIN-0xxxx.
PIMSoft 1.6 requires Windows 10.