Update app.py

app.py

@@ -48,7 +48,7 @@ from PIL import Image
 
 # ---- Friendly names (UI) ----
 MODEL_NAME_TBNET = "TBNet (CNN model)"
-MODEL_NAME_RADIO = "RADIO (visual model)"
+MODEL_NAME_RADIO = "nvidia/C-RADIOv4-SO400M (visual model)"
 
 # ---- Default TB/Lung weights (HF-friendly relative paths) ----
 DEFAULT_TB_WEIGHTS = "weights/best.pt"
@@ -1408,7 +1408,7 @@ def build_ui():
                         "Leave off for clean digital exports.</div>"
                     )
 
-                    use_radio = gr.Checkbox(value=False, label=f"Enable {MODEL_NAME_RADIO}")
+                    use_radio = gr.Checkbox(value=True, label=f"Enable {MODEL_NAME_RADIO}")
                     radio_gate = gr.Slider(
                         0.10, 0.40, value=RADIO_GATE_DEFAULT, step=0.01,
                         label="RADIO masked gate (run masked head if lung coverage ≥ gate)"