Creating new images and Generating graphs: Difference between pages

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<div id="CreatingImages"></div>
MIPAV allows you to generate intensity profiles, or contour VOI graphs, for VOI contours. For delineated VOIs, you can generate 2D, 3D, or 4D intensity graphs. You can also generate a 3D intensity graph at a specific point across all slices in a dataset. For information on how to contour a VOI, refer to Chapter 1, "Segmenting Images Using Contours and Masks,"<br />
== Creating new images ==
[[File:RawDialogBox.jpg|350px|thumb|right|Raw dialog box]]


'''To create a new image file:'''<br />
=== Generating contour VOI graphs ===
<ol>
Contour VOI graphs display the intensity values of the selected contour's boundary in the Contour VOI Graph window (Figure 10). You can generate either 2D or 3D contour VOI graphs. <br />
<li>Do one of the following: </li>
 
<ul>
'''To generate 2D contour VOI graphs'''<br />
<li>If an image file is not already open, select File &gt; Open Image(A) &gt; Create Blank Image.</li>
1 Open an image.<br />
<li>If an image file is already open, select File &gt; Load Image (B)&gt; Create Blank Image. The [[#ImageDialod |Raw dialog box]] appears.</li>
2 Delineate a 2D VOI on the image using one of the 2D icons in the MIPAV window.<br />
</ul>
<li>In the dialog box, select the image type. </li>
<li>Select the units of measure for each dimension. </li>
<li> Enter the header offset and byte ordering information.</li>
<li>Click OK. A blank image appears in an image window.</li>
<li>Use the paint and VOI tools to create an image.</li>
<li>Click File &gt; Save image as. The Save dialog box opens.</li>
<li>Type the name of the file in File Name, and select the file type in Files of type.</li>
<li>Click OK. MIPAV saves the image under the file type you selected.</li>
</ol>


<div id="ImageDialod"></div>


== Image dialog box ==
{| border="1" cellpadding="5"
{| border="1" cellpadding="5"
|+ <br />'''
|+ '''Figure 10. Contour VOI Graph window '''
|-
| rowspan="1" colspan="3" |
[[Image:windowContourVOIGraph.jpg]]
|-
| rowspan="4" colspan="1" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">File</font>'''</span></div>
| rowspan="1" colspan="2" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Open Graph</font>'''</span>-Opens a PLT file that contains graph data. When you select this command or press Ctrl O on the keyboard, the Open Graph Data dialog box appears. </div>
|-
| rowspan="1" colspan="2" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Save Graph</font>'''</span>-Saves the graph data in a PLT file. When you select this command or when you press Ctrl S on the keyboard, the Save dialog box opens.</div>
|-
| rowspan="1" colspan="2" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Print Graph</font>'''</span>-Allows you to print the graph. When you select this command or press <br />Ctrl P, the Print dialog box opens.</div>
|-
|-
|
'''Image type'''
| rowspan="1" colspan="2" |
| rowspan="1" colspan="2" |
Synonymous with data type. The image type determines the number of intensities that can be represented in an image. For example, a Boolean image can display two intensities: 1 and 0. See also [[Supported Formats]].
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Close Graph</font>'''</span>-Closes the Intensity Graph window. To close the window, you can also press Ctrl X on the keyboard.</div>
 
'''Boolean'''-1 bit per pixel (1 on, 0 off)
 
'''Unsigned byte'''-1 byte per pixel (0, 255)
 
'''Unsigned short'''-2 bytes per pixel (0, 65535)
 
'''Unsigned integer'''-4 bytes per pixel (0, 232 -1)
 
'''Float'''-4 bytes per pixel (-3.4E38, 3.4E38)
 
'''ARGB'''-3 bytes per pixel, plus 1 byte; 8 bits per color channel (alpha, red, green, and blue)
 
'''Byte'''-1 byte per pixel (-128, 127)
 
'''Short'''-2 bytes per pixel (-32768, 32767)
 
'''Integer'''-4 bytes per pixel (-231, 231-1)
 
'''Long'''-8 bytes per pixel (-9.22E18, 9.22E18)
 
'''Double'''-8 bytes per pixel (-1.8E308, 1.8E308)
 
'''ARGB U short'''-2 bytes per color channel and 2 bytes for alpha channel
|-
|-
|
| rowspan="3" colspan="1" |
'''Dimensions and resolutions'''
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Edit</font>'''</span></div>
| rowspan="1" colspan="2" |
| rowspan="1" colspan="2" |
Degree of manifolding of a quantity such as space or time. Two-dimensional datasets are composed of one image (the two dimensions are length and width). Generally, three-dimensional datasets are composed of more than one image. The third dimension is generally space. The fourth dimension is generally time. (Either time or space can be the third or fourth dimensions.) Zeros in the text boxes indicate that the dimension is not represented in the image. For example, if the text boxes for the first and second dimensions are filled, and the rest of the text boxes are filled with a zero, the image only has two dimensions.
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Delete Function</font>'''</span>-Allows you to delete a specific function. However, you cannot delete a function if it is the only function displayed in the window.</div>
Dimensions
 
1st-Width (along x axis)
 
2nd-Length (along y axis)
 
3rd-Depth (along z axis)
 
4th-Time (along t axis)
 
5th-Fifth dimension
 
Resolutions
 
Size of pixel or voxel per dimensions 1 through 5.
|-
|-
|
'''Units of measure'''
| rowspan="1" colspan="2" |
| rowspan="1" colspan="2" |
Indicates the unit of measurement for each of the applicable dimensions.
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Copy Function</font>'''</span>-Copies a function that is currently displayed in the window.</div>
|-
|-
|
'''Header offset'''
| rowspan="1" colspan="2" |
| rowspan="1" colspan="2" |
Indicates the size of the space reserved at the beginning of the file where specific types of information is kept. This space, which is called the header, precedes the image data. If you know the length of the header, type it in this box. When MIPAV accesses the file, it skips the header offset and begins to read the image data. Note that not all image file formats have a header.
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Paste Function</font>'''</span>-Pastes a previously copied function into the window. The pasted function has a different color than the first function displayed in the window.</div>
|-
|-
|
| rowspan="3" colspan="1" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Big endian</font>'''</span></div>
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Views</font>'''</span></div>
| rowspan="1" colspan="2" |
| rowspan="1" colspan="2" |
Indicates whether image data is stored in the big endian format. If not, the image data is stored in the little endian format. Endianess refers to the byte ordering of the data. Some computers order the data with the least significant byte (LSB) first followed by the most significant byte (MSB). This byte order is referred as little endian or Intel byte ordering. Machines that use little-endian byte ordering are VAXes, Intel x86, and Pentium. The reverse is MSB and then LSB, which is referred as big endian or Motorola byte ordering. Machines that use big-endian byte ordering are IBM System 3D, RISC, and a Motorola 680x0. MIPAV is biendian; it supports both big- and little-endian byte-ordering formats.
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Modify Graph Features</font>'''</span>-Allows you to customize the appearance of the graph.</div>
|-
|-
|
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">OK</font>'''</span></div>
| rowspan="1" colspan="2" |
| rowspan="1" colspan="2" |
Applies the parameters that you specified and creates a blank image.
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Reset Range to Default</font>'''</span>-<span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">[TBD]</font>'''</span></div>
|-
|-
|
'''Cancel'''
| rowspan="1" colspan="2" |
| rowspan="1" colspan="2" |
>Disregards any changes you made in this dialog box, closes the dialog box, and does not create a blank image.
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Reset Graph to Original</font>'''</span>-<span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">[TBD]</font>'''</span>. </div>
|-
|-
|
|
'''Help'''
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Help</font>'''</span></div>
| rowspan="1" colspan="2" |
| rowspan="1" colspan="2" |
Displays online help for this dialog box.
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Help Topics</font>'''</span>-Displays online help topics.</div>
|}
|}


== Annotating images with text ==
<br />
[[File:AnnotatingWithTexst.jpg|200px|thumb|right|The Annotation dialog box]]
3 Select the VOI. <br />
[[Image:AnnotataTExtIco.jpg]] You can use the Annotation tool icon located on [[MIPAV toolbars | VOI toolbar]] to place text directly on an image at any position on the image. You can use any font family, or typeface, that is installed on your computer to display the text.
As an option, copy the VOI to other slices in the dataset by selecting VOI &gt; Propagate and one of the following commands:<br />
*To Next Slice<br />
*To Previous Slice<br />
*To All Slices<br />
4 Do one of the following:<br />
*Select VOI &gt; Graph &gt; Boundary Intensity in the MIPAV window. <br />
*Right click on the VOI and then select Graph &gt; Boundary Intensity.<br />
*The Contour VOI Graph window (Figure 10) opens.<br />
 
'''To generate 3D contour VOI graphs'''<br />
1 Open an image.<br />
2 Delineate a VOI on the image using the 3D rectangular VOI icon, in the MIPAV window. <br />
3 Select the VOI. <br />
As an option, copy the VOI to other slices in the dataset by selecting VOI &gt; Propagate and one of the following commands:<br />
*To Next Slice<br />
*To Previous Slice<br />
*To All Slices<br />
4 Do one of the following:<br />
*Select VOI &gt; Graph &gt; Boundary Intensity in the MIPAV window.<br />
*Right-click on the VOI and then select Graph &gt; Boundary Intensity. <br />
The Contour VOI Graph window (Figure 10) opens. This window displays a graph of the intensity values of the selected contour's boundary. <br />


<div id="AnnotateImages"></div>
=== Generating intensity graphs ===
=== To annotate images with text:===
Intensity profiles, or graphs, present information on the intensity values of the VOI region in an image. The intensity graph appears in the Intensity Graph window (Figure 11).<br />


<ol>
'''To generate 2D intensity graphs'''<br />
<li>Open an image.</li>
1 Open an image.<br />
<li>Click the Annotation tool icon. The Annotation dialog box  opens.</li>
2 Delineate a 2D VOI on the image using one of the 2D icons in the MIPAV window.<br /><
<li>Click the image on which you want the text to appear. The image becomes the active image.</li>
3 Select the VOI. <br />
<li>Select the font family and style (bold or italic). To select a regular font style, simply specify the font family.</li>
As an option, copy the VOI to other slices in the dataset by selecting VOI &gt; Propagate and one of the following commands:<br />
<li>Type the font size of type in the '''pt.''' box.</li>
*To Next Slice<br />
<li>Press Enter. The Annotation dialog box either enlarges or reduces in size depending on the type size you chose.</li>
*To Previous Slice<br />
<li>Click Color to select the color of the text. The color of the type in the Text box changes to the color you have chosen.</li>
*To All Slices<br />
<li>Select "Enter text here" and type the text that you want to display on the image in the Text box.</li>
4 Do one of the following:<br />
<li> Click OK. The text appears near the top of the image.</li>
Select VOI &gt; Graph in the MIPAV window and either of the following:<br />
<li> Click the text and drag it to any position on the image.</li>
* ''2.5D Total Intensity'' -To generate a graph of the sum of the intensity values of the VOI region. <br />
</ol>
* ''2.5D Average Intensity'' -To generate a graph of the average of the intensity values of the VOI region.<br />
Right-click on the VOI and then select Graph and one of the following commands:<br />
* ''2.5D Total Intensity'' -To generate a graph of the sum of the intensity values of the area delineated by the VOI per slice.<br />
* ''2.5D Average Intensity'' -To generate a graph of the average of the intensity values of the VOI region.<br />
* ''2.5D Total Intensity with Threshold'' -TBD. <br />
* ''2.5D Average Intensity with Threshold'' -TBD.<br />
The Intensity Graph window (Figure 11) opens.


=== Annotation dialog box ===
{| border="1" cellpadding="5"
{| border="1" cellpadding="5"
|+''' Annotation dialog box'''<br />
|+ '''Figure 11. Intensity Graph window '''
|-
|-
|'''Font options'''
|
|'''Font'''-Specifies the font family, or typeface, for the text. When you select another typeface, "Enter text here" appears in that typeface.
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">File</font>'''</span></div>
|
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Open Graph</font>'''</span>-Opens a PLT file that contains graph data.</div> <div class="CellBody">When you select this command or press Ctrl O on the keyboard, the Open Graph Data dialog box appears. </div>
| rowspan="2" colspan="1" |
[[Image:VOIGRaphMOdifyPointsVis.jpg]]
|-
|-
|
|
|'''Bold'''-Specifies that the type style should be bold.
<div class="CellBody"> </div>
|
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Save Graph</font>'''</span>-Saves the graph data in a PLT file. </div> <div class="CellBody">When you select this command or when you press Ctrl S on the keyboard, the Save dialog box opens.</div>
|-
|-
|
|
|'''Italic'''-Specifies that the type style should be italic.
<div class="CellBody"> </div>
| rowspan="1" colspan="2" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Print Graph</font>'''</span>-Allows you to print the graph. When you select this command or press <br />Ctrl P, the Print dialog box opens.</div>
|-
|-
|
|
|'''Pt. (point) size'''-Specifies the point size of the typeface.
<div class="CellBody"> </div>
| rowspan="1" colspan="2" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Close Graph</font>'''</span>-Closes the Intensity Graph window. To close the window, you can also press Ctrl X on the keyboard.</div>
|-
|-
|
|
|'''Color'''-Specifies the color of the text. When you click this box, the Pick VOI Color dialog box opens.
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Edit</font>'''</span></div>
| rowspan="1" colspan="2" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Delete Function</font>'''</span>-Allows you to delete the function that you select. However, you cannot delete a function if it is the only function displayed in the window.</div>
|-
|-
|'''Text'''
|
|rowspan="1" colspan="2" |Displays the text that should appear on the image.
<div class="CellBody"> </div>
| rowspan="1" colspan="2" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Paste Function</font>'''</span>-Pastes a previously copied function into the window. The pasted function has a different color than the first function displayed in the window.</div>
|-
|-
|Marker options
|
|rowspan="1" colspan="2" |The arrow marker appears if you check the Use Arrow Marker box.
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Views</font>'''</span></div>
| rowspan="1" colspan="2" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Modify Graph Features</font>'''</span>-Allows you to customize the appearance of the graph.</div>
|-
|-
|'''OK'''
|
|rowspan="1" colspan="2" |Applies the parameters that you specified and places the text on the image, which you can move to any position on the image.
<div class="CellBody"> </div>
| rowspan="1" colspan="2" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Reset Range to Default</font>'''</span>-TBD.</div>
|-
|-
|'''Cancel'''
|
|rowspan="1" colspan="2" | Disregards any changes you made in this dialog box, closes the dialog box, and does not place text on the image.
<div class="CellBody"> </div>
| rowspan="1" colspan="2" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Reset Graph to Original</font>'''</span>-TBD.</div>
|-
|-
|'''Help'''
|
|rowspan="1" colspan="2" |Displays online help for this dialog box.
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Help</font>'''</span></div>
| rowspan="1" colspan="2" |
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Help Topics</font>'''</span>-Displays online help topics.</div>
|}
|}


==== Previewing Font Selection ====
'''To generate 3D intensity graphs of all slices in a dataset at a specific point'''<br />
[[File:AnnotationDialogBox1.jpg|400px|thumb|left|The Annotation dialog box]]
1 Open an image.<br />
2 Draw a point VOI on the image (Figure 12).<br />
3 Select the VOI.<br />
4 Do one of the following:<br />
*Select the Propagate VOI to all slices icon.<br />
*Select VOI &gt; Propagate &gt; To All Slices. <br />
*Right-click on the VOI, then select Propagate &gt; To All Slices (Figure 12).<br />
5 Right-click on the VOI and select Show VOI Graph (Figure 12).<br />


The Annotation dialog box allows you to preview the font family, style, size, and color of the text before you click OK and add the text to the image.
{| border="1" cellpadding="5"
|+ '''Figure 12. Point VOI'''
|-
|
<div style="font-style: normal; font-weight: normal; margin-bottom: 0pt; margin-left: 0pt; margin-right: 0pt; margin-top: 0pt; text-align: left; text-decoration: none; text-indent: 0pt; text-transform: none; vertical-align: baseline"><font color="#000000">  <br /></font></div>


=== To edit the text ===
<br clear="all" />
<ol>
<li> Double-click the added text on an image. The Annotation dialog box opens.</li>
<li>Make any changes you want to the text, font family, font style, and color.</li>
<li>Click OK. The changes you made to the text should appear on the image.</li>
</ol>


=== To delete the text ===
{|
<ol>
|
<li>Select the added text on an image.</li>
[[Image:PointVOIPropagate.jpg]]
<li>Press Del. MIPAV removes the text from the image.</li>
|}
</ol>


To restore the text to the image, select Edit > Undo VOI. The text reappears on the image.
'''To generate 3D intensity graphs of specific areas'''<br />
1 Open an image.<br />
2 Delineate a VOI on the image using the 3D rectangular VOI icon.<br />
3 Select the VOI. Then, do one of the following:<br />
*a Select VOI &gt; Graph and either of the following in the MIPAV window:<br />
** ''2.5D Total Intensity'' -To generate a graph of the sum of the intensity values of the area delineated by the VOI per slice.<br />
** ''2.5D Average Intensity'' -To generate a graph of the average of the intensity values of the VOI region.<br />
*b Right-click the VOI, and then select Graph and one of the following commands in the MIPAV window:<br />
** ''2.5D Total Intensity'' -To generate a graph of the sum of the intensity values of the area delineated by the VOI per slice.<br />
** ''2.5D Average Intensity'' -To generate a graph of the average of the intensity values of the VOI region.<br />
** ''2.5D Total Intensity with Threshold'' -TBD.<br />
** ''2.5D Average Intensity with Threshold'' -TBD.<br />
The Intensity Graph window (Figure 11) opens.<br />


== See also: ==
*[[Saving and printing images]]
*[[Delineating volumes of interest (VOIs)| Volumes of Interest]]
**[[Delineating volumes of interest (VOIs)]] 
**[[Calculating VOI statistics]]
**[[Reviewing VOI statistics]]
**[[Reviewing VOI statistics|Generating graphs (intensity profiles)]] 
*[[ImageJ | Working with ImageJ]]


[[Category:Help]]
[[Customizing the appearance of graphs - Modify graph dialog box]]
[[Category:Getting started]]

Revision as of 20:22, 21 February 2012

MIPAV allows you to generate intensity profiles, or contour VOI graphs, for VOI contours. For delineated VOIs, you can generate 2D, 3D, or 4D intensity graphs. You can also generate a 3D intensity graph at a specific point across all slices in a dataset. For information on how to contour a VOI, refer to Chapter 1, "Segmenting Images Using Contours and Masks,"

Generating contour VOI graphs

Contour VOI graphs display the intensity values of the selected contour's boundary in the Contour VOI Graph window (Figure 10). You can generate either 2D or 3D contour VOI graphs.

To generate 2D contour VOI graphs
1 Open an image.
2 Delineate a 2D VOI on the image using one of the 2D icons in the MIPAV window.


Figure 10. Contour VOI Graph window

WindowContourVOIGraph.jpg

File
Open Graph-Opens a PLT file that contains graph data. When you select this command or press Ctrl O on the keyboard, the Open Graph Data dialog box appears.
Save Graph-Saves the graph data in a PLT file. When you select this command or when you press Ctrl S on the keyboard, the Save dialog box opens.
Print Graph-Allows you to print the graph. When you select this command or press
Ctrl P, the Print dialog box opens.
Close Graph-Closes the Intensity Graph window. To close the window, you can also press Ctrl X on the keyboard.
Edit
Delete Function-Allows you to delete a specific function. However, you cannot delete a function if it is the only function displayed in the window.
Copy Function-Copies a function that is currently displayed in the window.
Paste Function-Pastes a previously copied function into the window. The pasted function has a different color than the first function displayed in the window.
Views
Modify Graph Features-Allows you to customize the appearance of the graph.
Reset Range to Default-[TBD]
Reset Graph to Original-[TBD].
Help
Help Topics-Displays online help topics.


3 Select the VOI.
As an option, copy the VOI to other slices in the dataset by selecting VOI > Propagate and one of the following commands:

  • To Next Slice
  • To Previous Slice
  • To All Slices

4 Do one of the following:

  • Select VOI > Graph > Boundary Intensity in the MIPAV window.
  • Right click on the VOI and then select Graph > Boundary Intensity.
  • The Contour VOI Graph window (Figure 10) opens.

To generate 3D contour VOI graphs
1 Open an image.
2 Delineate a VOI on the image using the 3D rectangular VOI icon, in the MIPAV window.
3 Select the VOI.
As an option, copy the VOI to other slices in the dataset by selecting VOI > Propagate and one of the following commands:

  • To Next Slice
  • To Previous Slice
  • To All Slices

4 Do one of the following:

  • Select VOI > Graph > Boundary Intensity in the MIPAV window.
  • Right-click on the VOI and then select Graph > Boundary Intensity.

The Contour VOI Graph window (Figure 10) opens. This window displays a graph of the intensity values of the selected contour's boundary.

Generating intensity graphs

Intensity profiles, or graphs, present information on the intensity values of the VOI region in an image. The intensity graph appears in the Intensity Graph window (Figure 11).

To generate 2D intensity graphs
1 Open an image.
2 Delineate a 2D VOI on the image using one of the 2D icons in the MIPAV window.
< 3 Select the VOI.
As an option, copy the VOI to other slices in the dataset by selecting VOI > Propagate and one of the following commands:

  • To Next Slice
  • To Previous Slice
  • To All Slices

4 Do one of the following:
Select VOI > Graph in the MIPAV window and either of the following:

  • 2.5D Total Intensity -To generate a graph of the sum of the intensity values of the VOI region.
  • 2.5D Average Intensity -To generate a graph of the average of the intensity values of the VOI region.

Right-click on the VOI and then select Graph and one of the following commands:

  • 2.5D Total Intensity -To generate a graph of the sum of the intensity values of the area delineated by the VOI per slice.
  • 2.5D Average Intensity -To generate a graph of the average of the intensity values of the VOI region.
  • 2.5D Total Intensity with Threshold -TBD.
  • 2.5D Average Intensity with Threshold -TBD.

The Intensity Graph window (Figure 11) opens.

Figure 11. Intensity Graph window
File
Open Graph-Opens a PLT file that contains graph data.
When you select this command or press Ctrl O on the keyboard, the Open Graph Data dialog box appears.

VOIGRaphMOdifyPointsVis.jpg

Save Graph-Saves the graph data in a PLT file.
When you select this command or when you press Ctrl S on the keyboard, the Save dialog box opens.
Print Graph-Allows you to print the graph. When you select this command or press
Ctrl P, the Print dialog box opens.
Close Graph-Closes the Intensity Graph window. To close the window, you can also press Ctrl X on the keyboard.
Edit
Delete Function-Allows you to delete the function that you select. However, you cannot delete a function if it is the only function displayed in the window.
Paste Function-Pastes a previously copied function into the window. The pasted function has a different color than the first function displayed in the window.
Views
Modify Graph Features-Allows you to customize the appearance of the graph.
Reset Range to Default-TBD.
Reset Graph to Original-TBD.
Help
Help Topics-Displays online help topics.

To generate 3D intensity graphs of all slices in a dataset at a specific point
1 Open an image.
2 Draw a point VOI on the image (Figure 12).
3 Select the VOI.
4 Do one of the following:

  • Select the Propagate VOI to all slices icon.
  • Select VOI > Propagate > To All Slices.
  • Right-click on the VOI, then select Propagate > To All Slices (Figure 12).

5 Right-click on the VOI and select Show VOI Graph (Figure 12).

Figure 12. Point VOI


PointVOIPropagate.jpg

To generate 3D intensity graphs of specific areas
1 Open an image.
2 Delineate a VOI on the image using the 3D rectangular VOI icon.
3 Select the VOI. Then, do one of the following:

  • a Select VOI > Graph and either of the following in the MIPAV window:
    • 2.5D Total Intensity -To generate a graph of the sum of the intensity values of the area delineated by the VOI per slice.
    • 2.5D Average Intensity -To generate a graph of the average of the intensity values of the VOI region.
  • b Right-click the VOI, and then select Graph and one of the following commands in the MIPAV window:
    • 2.5D Total Intensity -To generate a graph of the sum of the intensity values of the area delineated by the VOI per slice.
    • 2.5D Average Intensity -To generate a graph of the average of the intensity values of the VOI region.
    • 2.5D Total Intensity with Threshold -TBD.
    • 2.5D Average Intensity with Threshold -TBD.

The Intensity Graph window (Figure 11) opens.


Customizing the appearance of graphs - Modify graph dialog box

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