DOC: Added info block to get data.

Former-commit-id: 90bd71e6

src/Cxx/Medical/MedicalDemo1.md

 ### Description
 The skin extracted from a CT dataset of the head.
 
+!!! info
+    The example uses [FullHead.mhd](https://raw.githubusercontent.com/lorensen/VTKExamples/master/src/Testing/Data/FullHead.mhd) which references [FullHead.raw.gz](https://github.com/lorensen/VTKExamples/blob/master/src/Testing/Data/FullHead.raw.gz?raw=true).
+
 !!! note
     This original source code for this example is [here](https://gitlab.kitware.com/vtk/vtk/blob/395857190c8453508d283958383bc38c9c2999bf/Examples/Medical/Cxx/Medical1.cxx).

src/Cxx/Medical/MedicalDemo2.md

 ### Description
 Skin and bone isosurfaces.
 
+!!! info
+    The example uses [FullHead.mhd](https://raw.githubusercontent.com/lorensen/VTKExamples/master/src/Testing/Data/FullHead.mhd) which references [FullHead.raw.gz](https://github.com/lorensen/VTKExamples/blob/master/src/Testing/Data/FullHead.raw.gz?raw=true).
+
 !!! note
     This original source code for this example is [here](https://gitlab.kitware.com/vtk/vtk/blob/395857190c8453508d283958383bc38c9c2999bf/Examples/Medical/Cxx/Medical2.cxx).

src/Cxx/Medical/MedicalDemo3.md

 ### Description
 Composite image of three planes and translucent skin
 
+!!! info
+    The example uses [FullHead.mhd](https://raw.githubusercontent.com/lorensen/VTKExamples/master/src/Testing/Data/FullHead.mhd) which references [FullHead.raw.gz](https://github.com/lorensen/VTKExamples/blob/master/src/Testing/Data/FullHead.raw.gz?raw=true).
+
 !!! note
     This original source code for this example is [here](https://gitlab.kitware.com/vtk/vtk/blob/395857190c8453508d283958383bc38c9c2999bf/Examples/Medical/Cxx/Medical3.cxx).
 

src/Cxx/Medical/MedicalDemo4.md

 ### Description
 Volume rendering of the dataset.
 
+!!! info
+    The example uses [FullHead.mhd](https://raw.githubusercontent.com/lorensen/VTKExamples/master/src/Testing/Data/FullHead.mhd) which references [FullHead.raw.gz](https://github.com/lorensen/VTKExamples/blob/master/src/Testing/Data/FullHead.raw.gz?raw=true).
+
 !!! note
     This original source code for this example is [here](https://gitlab.kitware.com/vtk/vtk/blob/395857190c8453508d283958383bc38c9c2999bf/Examples/Medical/Cxx/Medical4.cxx).
 

src/Cxx/Medical/TissueLens.md

 ### Description
-This example uses two vtkClipDataSet filters to achieve a "tissue lens" affect. First, a sphere implicit function is used to clip a spherical hole in the extracted isosurface. Then a geometric sphere samples the original volume data using a vtkProbeFilter. The resulting scalar point data is used to clip the sphere surface with the isosurface value.
+This example uses two vtkClipDataSet filters to achieve a "tissue lens" affect. First, a vtkSphere implicit function is used to clip a spherical hole in the isosurface extracted with vtkMarchingCubes. Then a geometric vtkSphereSource samples the original volume data using a vtkProbeFilter. vtkClipDataSet uses the resulting scalar point data to clip the sphere surface with the isosurface value.
+
+!!! info
+    The example uses [FullHead.mhd](https://raw.githubusercontent.com/lorensen/VTKExamples/master/src/Testing/Data/FullHead.mhd) which references [FullHead.raw.gz](https://github.com/lorensen/VTKExamples/blob/master/src/Testing/Data/FullHead.raw.gz?raw=true).

src/Cxx/VolumeRendering/FixedPointVolumeRayCastMapperCT.md

 ### Description
 
+!!! info
+    The example uses [FullHead.mhd](https://raw.githubusercontent.com/lorensen/VTKExamples/master/src/Testing/Data/FullHead.mhd) which references [FullHead.raw.gz](https://github.com/lorensen/VTKExamples/blob/master/src/Testing/Data/FullHead.raw.gz?raw=true).
+
 !!! note
     This original source code for this example is [here](https://gitlab.kitware.com/vtk/vtk/blob/395857190c8453508d283958383bc38c9c2999bf/Examples/VolumeRendering/Cxx/FixedPointVolumeRayCastMapperCT.cxx).