add sample data

app.py

@@ -69,6 +69,14 @@ def build_interface():
 
             clear_button = gr.ClearButton(components=inputs + outputs, )
 
+            example = gr.Examples(
+                ['assets/sample.dcm'],
+                inputs=inputs,
+                outputs=outputs,
+                fn=read_and_preprocess_dicom,
+                cache_examples=True
+            )
+
     return demo