diff --git a/app/Models/OrthancHost.php b/app/Models/OrthancHost.php
index c710624..b088392 100644
--- a/app/Models/OrthancHost.php
+++ b/app/Models/OrthancHost.php
@@ -2,4 +2,17 @@
 
 namespace App\Models;
 
-class OrthancHost extends BaseModel {}
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class OrthancHost extends BaseModel
+{
+    public function institute(): BelongsTo
+    {
+        return $this->belongsTo(Institute::class);
+    }
+
+    public function facilty(): BelongsTo
+    {
+        return $this->belongsTo(Facility::class);
+    }
+}
diff --git a/app/Models/Study.php b/app/Models/Study.php
index 58fd839..d12a2db 100644
--- a/app/Models/Study.php
+++ b/app/Models/Study.php
@@ -117,6 +117,11 @@ public function assignedPhysician(): BelongsTo
         return $this->belongsTo(User::class, 'assigned_physician_id');
     }
 
+    public function orthancHost(): BelongsTo
+    {
+        return $this->belongsTo(OrthancHost::class);
+    }
+
     public function isAssigned(int $rad_id): bool
     {
         return $this->assigned_physician_id === $rad_id;