--- a
+++ b/examples/utils.py
@@ -0,0 +1,42 @@
+import os
+from urllib.request import urlopen
+
+
+def download_file(url, filepath):
+    response = urlopen(url)
+
+    target_dir = os.path.dirname(filepath)
+    if target_dir and not os.path.exists(target_dir):
+        os.makedirs(target_dir)
+
+    # Check if the request was successful
+    if response.status == 200:
+        with open(filepath, 'wb') as f:
+            f.write(response.read())
+    else:
+        print(f"Failed to download file. Status code: {response.status_code}")
+
+    return filepath
+
+def get_demo_data():
+    demo_data_url = "https://www.dropbox.com/scl/fi/covbvo6f547kak4em3cjd/sybil_example.zip?rlkey=7a13nhlc9uwga9x7pmtk1cf1c&st=dqi0cf9k&dl=1"
+
+    zip_file_name = "sybil_example.zip"
+    cache_dir = os.path.expanduser("~/.sybil")
+    zip_file_path = os.path.join(cache_dir, zip_file_name)
+    os.makedirs(cache_dir, exist_ok=True)
+    if not os.path.exists(zip_file_path):
+        print(f"Downloading demo data to {zip_file_path}")
+        download_file(demo_data_url, zip_file_path)
+
+    demo_data_dir = os.path.join(cache_dir, "sybil_example")
+    image_data_dir = os.path.join(demo_data_dir, "sybil_demo_data")
+    if not os.path.exists(demo_data_dir):
+        print(f"Extracting demo data to {demo_data_dir}")
+        import zipfile
+        with zipfile.ZipFile(zip_file_path, 'r') as zip_ref:
+            zip_ref.extractall(demo_data_dir)
+
+    dicom_files = os.listdir(image_data_dir)
+    dicom_files = [os.path.join(image_data_dir, x) for x in dicom_files]
+    return dicom_files