Update app.py

app.py

@@ -15,7 +15,21 @@ from tkinter import Tcl
 subprocess_executed = False
 
 # Streamlit app title
-st.title("DICOM Image Viewer")
+st.markdown(
+    """
+    <style>
+    .reportview-container {
+        background: url("https://media.istockphoto.com/id/1078217402/photo/3d-illustration-of-a-constricted-and-narrowed-artery-and-the-blood-cannot-flow-properly.jpg?s=612x612&w=0&k=20&c=RiKmxxHSr8WjHHz4nHIuVtdYmzYSp6NfDev2lPbgEWU=") no-repeat center center fixed;
+        background-size: cover;
+    }
+    </style>
+    """,
+    unsafe_allow_html=True,
+)
+
+# Title with superscript and subtitle
+st.title("A<sup>4</sup>")
+st.markdown("Automated Aorta Segmentation and Measurement")
 
 # Upload a ZIP file containing DICOM slices
 uploaded_zip_file = st.file_uploader("Upload a ZIP file containing DICOM slices", type=["zip"])