IV. Display

Overview

This chapter describes how to use ROI tools and the Zoom function

1. ROI

1.1 ROI Types

3 kinds of ROI can be used:

Rectangle

Ellipsoid: this type of ROI can be rotated.

Single Point: this type of ROI can be shown interactively. See section 1.3 for more details.

1.2 ROI Waveform

Avg Line

Display the averaged signal level in each task block. Temporal mean, standard deviation and correlation coefficient will be shown as well.

Scale

ROI Pixel

Display the waveform of each pixel in the ROI. Value 0 shows the averaged waveform.

Zoom

Select display type when the scan number is very large.

Signal Change

Calculate the signal change percentage between the specified task blocks, and time lag.

ROI Info

Show the spatial mean, standard deviation, and their ratio in the ROI of the specified scan number.

Bg Color

1.3 Interactively Display ROI Waveform

The waveform of a pixel can be displayed following the movement of the mouse cursor. This is helpful for checking the image. To use this:

1. select the "Single Point" ROI type.

2. choose a pixel.

3. click on "Show ROI" to display the ROI waveform window.

4. keep the ROI waveform window opened and click on another pixel. The waveform of the pixel will be displayed.

2. Zoom