Matlab GUI: How to save axes as DICOM file?

Hello,

I built a GUI with a handles.axes in which a greyscale image(MRI) is in the background and a colored, semitransparent image(Perfusion) is in the foreground. Now I want to save this overlayed image but I have no variable which "points" to that overlay.

*Does anybody know how it's possible to receive the overlayed image from the handles.axes? *

What I have tried so far: (not working)

[FileName, PathName] = uiputfile('*dcm', 'Save As');

Name = fullfile(PathName,FileName);

f=getframe(handles.axes1);

[x,map]=frame2im(f);

dicomwrite(x,Name,'dcm');

I have also tried copyobj, getimage and gca..

Thanks in advance..

[m_user]

I tried it now with this code, but I also get just a number when i dicomread the saved image again: if true

    [FileName, PathName] = uiputfile('*dcm', 'Save As');
Name = fullfile(PathName,FileName);
names={handles.filesPerfusion.name};
PositionText=size(handles.dcmStack(:,:,1));
figure('name','Saving Process'),
colormap gray(256),
h1=imagesc(handles.dcmStack(:,:,1)); 
hold on;
h2=imagesc(handles.mPerfusion(:,:,:,1)); 
hold off;
axis off 
set(h2, 'AlphaData', handles.maskTransparency);
text(1,PositionText(1)-10, 'NOT FOR DIAGNOSTIC USE')
fname = names{1}; 
metadata = dicominfo([handles.path2 '\' fname]);
dicomwrite(gcf,Name, metadata)
close(gcf);

end

I also tried now to saveas it as jpg, but I store then an image with a white frame (caused by the figure?) I also already asked the author of export_fig if I could use this function but because of the fact that I overlay to images (and I don't have a variable which cotains all the image info) this function is unfortunately useless... Please help me..