User Interface

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User Interface

Starting the PSEG Tool

The PSEG tool is started with the Segment button

from the PMOD ToolBox or by directly dragging image files onto the above button.

Organization of the PSEG User Interface

The user interface of PSEG consists of three pages which can be selected by tabs:

  1. DB Load page: Loading of the images from a PMOD database. The images are transferred to the processing page according to their modality. This page is not shown if the database functionality is disabled.
  2. Segment page: Main segmentation page for creating VOIs by automatic and manual methods. They can be applied to the dynamic PET series for calculating the regional uptake, optionally with a partial volume correction.
  3. Statistics page: Shows the resulting tissue time-activity curves. They can be saved or submitted to the kinetic modeling tool.

Step-Wise Processing

Data processing is consistently organized by a stepwise progression towards the end result. On each processing stage the user has to take some action such as data loading or parameter configuration, and then start the next processing step with the red action button located in the lower right. As soon as the result is calculated, it will be shown on a new page representing the new processing stage. The cascade of stages is available by the selection area in the upper right.

Selecting the processing pages in this way conveniently allows inspecting the results of prior stages without initiating any calculations. To repeat a calculation with modified parameters, please activate the action button in the lower right again.

Fusion Image Display

The content of the image display area is controlled in the upper right. Often, more than one image contribute to the display. In these cases the tab corresponding to an image has to be first activated, before its color table or the color thresholds can be modified.

The fusion control section is located below the image control tabs. In the illustration above the colors of both images are mixed, whereby the weighting can be changed with the slider.

Convenience Buttons

Next to the action button in the lower right is an area with three buttons

offering the following functions:

Hide the parameters panel to free some space in the user interface. With the panel hidden, the icon changes to . When this button is activated, the panel is shown again.

Reset the parameters on the page to their default values. If the button in the taskbar to the right is activated, the defaults are reset on all pages.

Display help information for the current page.

Configurations

The PSEG tool can be configured according to user preferences in a dialog window as illustrated below.

The common configurations are available on the Paths and Display tabs, and in the upper part of the PSEG tab. The All VOI Tools flag allows defining the functionality level of the VOIS page. Default is a reduced set of VOI tools. To have all possible VOI tools available please enable the All VOI Tools box and restart.

Further Information

This guide is focused on the dedicated rodent segmentation functionality. Please refer to the PMOD Base Functionality Guide for details about general functions such as data loading, image display, and VOI definition.