Read DICOM metadata from DICOM-RT structure set files.

info = dicominfo('rtstruct.dcm');

Extract ROI data from the structure set and ROI contour modules of DICOM metadata. The output is a dicomContours object that stores the extracted ROI data.

contour = dicomContours(info);

Display the ROIs property of the dicomContours object.

contour.ROIs

ans=2×5 table
    Number          Name           ContourData    GeometricType       Color    
    ______    _________________    ___________    _____________    ____________

      1       {'Body_Contour' }    {90x1 cell}     {90x1 cell}     {3x1 double}
      2       {'Tumor_Contour'}    {21x1 cell}     {21x1 cell}     {3x1 double}

Plot all the ROI contour data in the object.

figure
plotContour(contour)

You can also plot a specific ROI contour data, selecting it by its ROI number. Plot ROI contour data specified by ROI number 1.

figure
plotContour(contour,1)

Read DICOM metadata from DICOM-RT structure set files.

info = dicominfo('rtstruct.dcm');

Extract ROI data from the structure set and ROI contour modules of DICOM metadata. The output is a dicomContours object that stores the extracted ROI data.

contour = dicomContours(info);

Create a 2-by-2 tiled chart layout to display multiple plots on a figure window.

figure('Position',[1 1 700 700])
tiledlayout(2,2)

Create an axes object by using the nexttile function. The axes span across first two columns of the tiled chart layout. Plot all the ROI contour data on these axes.

ax1 = nexttile(1,[1,2]);
plotContour(contour,ax1)
title('ROI Contour Data')

Create a second axes object and plot ROI contour data specified by ROI number 1.

ax2 = nexttile;
plotContour(contour,1,ax2)
title('ROI Contour Data of ROI Number 1')

Create a third axes object and plot ROI contour data specified by ROI number 2.

ax3 = nexttile;
plotContour(contour,2,ax3)
title('ROI Contour Data of ROI Number 2')

Read DICOM metadata from DICOM-RT structure set files.

info = dicominfo('rtstruct.dcm');

Extract ROI data from the structure set and ROI contour modules of DICOM metadata. The output is a dicomContours object that stores the extracted ROI data.

contour = dicomContours(info);

Plot the ROI contour data and get the parent axes. The returned parent axes is a hggroup object with separate handles for each ROI contour plot.

h = plotContour(contour)

h = 
  2x1 Group array:

  Group    (Body_Contour)
  Group    (Tumor_Contour)

Add text descriptions for each ROI contour plot by using the returned handles.

text(290,0,-400,'\leftarrow ROI number 1','Parent',h(1))
text(90,0,-500,'\leftarrow ROI number 2','FontWeight','Bold','Parent',h(2))