How to overlap Contour on the selected Slice in 3D graphic?

I generated code for slice images as follows,

figure(1);
Xsection=slice(X1,Y1,Z1,IMG,[Iso_center(1)],[],[]);
set(Xsection,'FaceColor','interp','Edgecolor','none');
set(Xsection,'FaceAlpha',0.45);
caxis auto; colorbar('location','EastOutside');
view(3); axis tight;

Then, I want to overlap Contour line on the selected slice image. Is there any way to do? If anyone knows, I'd like to ask your favor to let me know. Thank you.

Answer 1

[Sean de Wolski]

Perhaps you're looking for contourslice?

doc contourslice

[Soyoung]

Thank you very much. It worked.

[Soyoung]

I am sorry for asking one thing more. If I want to quantify (100%,90%,etc) value at a isoline, could you let me know how to represent?