diff --git a/app/Models/Study.php b/app/Models/Study.php
index b32da20..c8ceb76 100644
--- a/app/Models/Study.php
+++ b/app/Models/Study.php
@@ -367,4 +367,13 @@ protected function casts(): array
             'patient_birthdate' => 'immutable_date',
         ];
     }
+
+    public function isLockedBy(?User $user): bool
+    {
+        if ($user === null) {
+            $user = auth()->user();
+        }
+
+        return $this->locking_physician_id === $user->id;
+    }
 }
diff --git a/app/Services/Workflow/Manager.php b/app/Services/Workflow/Manager.php
index c548869..8fbd994 100644
--- a/app/Services/Workflow/Manager.php
+++ b/app/Services/Workflow/Manager.php
@@ -76,7 +76,8 @@ public function canReportEdit(): bool
 
     public function canUnlockReport(): bool
     {
-        return $this->activeStudy(fn () => $this->study->isLocked() && $this->study->locking_physician_id === $this->user->id);
+        return $this->activeStudy(fn () => $this->study->isLocked()
+            && $this->study->locking_physician_id === $this->user->id);
     }
 
     private function checkUserPermission(Permission $permission): bool