diff --git a/lib/api_web/controllers/redirect.ex b/lib/api_web/controllers/redirect.ex
index 229951d..888cf19 100644
--- a/lib/api_web/controllers/redirect.ex
+++ b/lib/api_web/controllers/redirect.ex
@@ -14,10 +14,34 @@ defmodule ApiWeb.Redirect do
     Logger.info("parametros: #{inspect(accession)}")
 
     if redirect == "TRUE"  do
-      hash = case get_hash_v2(accession) do
+      case get_hash_v2(accession) do
         {:ok, hash} ->
           Logger.info("URL: https://estudio.informemedico.com.ar/#/#{idsite}/#{hash}")
-          url = "https://estudio.informemedico.com.ar/#/#{idsite}/" <> hash
+          viewer = Envar.get("imViewer4")
+          viewer_host = Envar.get("imViewer4_host")
+          viewer_uid = Envar.get("imViewer4_uid")
+          gethash = Envar.get("imViewer4_gethash")
+
+          viewer_config = %{
+              client_uuid: viewer_uid,
+              gethash: gethash,
+              imviewer4_domain: viewer_host
+          }
+
+          url = case viewer do
+            "1" ->
+              case open_imviewer4(viewer_config, studyidentifier, 172800, assigns) do
+                {:ok, hash} ->
+                  "https://#{viewer_host}/imviewer4/viewer/#{viewer_uid}/" <> hash
+
+                {:error, reason} ->
+                  Logger.error("No se pudo obtener el hash para ImViewer4: #{inspect(reason)}")
+                  "https://#{viewer_host}/imviewer4/viewer/#{viewer_uid}/error"
+              end
+            "0" -> "https://estudio.informemedico.com.ar/#/#{idsite}/" <> hash
+          end
+
+          # url = "https://estudio.informemedico.com.ar/#/#{idsite}/" <> hash
           redirect(conn, external: url)
 
         {:error, error_msg} ->