diff --git a/60 ScansProcessing/extract_patient_info.py b/60 ScansProcessing/extract_patient_info.py
index 8b44926..b14dd72 100644
--- a/60 ScansProcessing/extract_patient_info.py	
+++ b/60 ScansProcessing/extract_patient_info.py	
@@ -408,8 +408,43 @@ def interactive_rename(pdf_path: Path, info: dict, verif: dict) -> bool:
         print(f"  Navržený název:  {nazev}")
     print("  Otevírám dialog...")
 
+    # Otevři PDF v prohlížeči (konkrétní proces, abychom zavřeli jen toto okno)
+    viewer_proc = None
+    try:
+        import subprocess
+        import winreg
+        import shlex
+
+        def _get_pdf_exe() -> list[str] | None:
+            try:
+                with winreg.OpenKey(winreg.HKEY_CLASSES_ROOT, r".pdf") as k:
+                    prog_id = winreg.QueryValue(k, "")
+                with winreg.OpenKey(winreg.HKEY_CLASSES_ROOT, rf"{prog_id}\shell\open\command") as k:
+                    cmd = winreg.QueryValue(k, "")
+                parts = shlex.split(cmd.replace("\\", "/"))
+                exe = parts[0].replace("/", "\\")
+                return [exe, str(pdf_path)]
+            except Exception:
+                return None
+
+        cmd = _get_pdf_exe()
+        if cmd:
+            viewer_proc = subprocess.Popen(cmd)
+        else:
+            subprocess.Popen(["start", "", str(pdf_path)], shell=True)
+    except Exception as e:
+        print(f"  [Prohlížeč] Nepodařilo se otevřít: {e}")
+
     odpoved = _rename_dialog(nazev or "", info_lines)
 
+    # Zavři jen tento konkrétní proces prohlížeče a počkej na uvolnění zámku
+    if viewer_proc is not None:
+        try:
+            viewer_proc.terminate()
+            viewer_proc.wait(timeout=10)
+        except Exception:
+            pass
+
     if odpoved is None:
         print("  Přeskočeno.")
         return False