diff --git a/IRaCIS.Core.Application/Service/ImageAndDoc/StudyService.cs b/IRaCIS.Core.Application/Service/ImageAndDoc/StudyService.cs
index 1169cd9d8..c30f36659 100644
--- a/IRaCIS.Core.Application/Service/ImageAndDoc/StudyService.cs
+++ b/IRaCIS.Core.Application/Service/ImageAndDoc/StudyService.cs
@@ -7,6 +7,7 @@ using IRaCIS.Core.Infrastructure;
 using Medallion.Threading;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
+using NetTopologySuite.Algorithm;
 using SkiaSharp;
 using System.Drawing;
 using ZiggyCreatures.Caching.Fusion;
@@ -177,7 +178,7 @@ namespace IRaCIS.Core.Application.Service.ImageAndDoc
                 {
                     await _oSSService.DeleteFromPrefix(item.Path, true);
 
-                    var length = Guid.Empty.ToString().Length + "_MaskDicom".Length;
+                    var length = Guid.Empty.ToString().Length + "_MaskDicom".Length + 1;
                     var newPath = item.Path[..^length];
 
                     okList.Add(new InstanceIdPath() { Id = item.Id, Path = newPath });
@@ -185,6 +186,17 @@ namespace IRaCIS.Core.Application.Service.ImageAndDoc
                     await _dicomInstanceRepository.BatchUpdateNoTrackingAsync(t => t.Id == item.Id, u => new DicomInstance() { Path = newPath, IsMasked = false });
                 }
 
+                if (item.Path.EndsWith("."))
+                {
+                    await _oSSService.DeleteFromPrefix(item.Path, true);
+
+                    var newPath = item.Path[..^1];
+
+                    okList.Add(new InstanceIdPath() { Id = item.Id, Path = newPath });
+
+                    await _dicomInstanceRepository.BatchUpdateNoTrackingAsync(t => t.Id == item.Id, u => new DicomInstance() { Path = newPath, IsMasked = false });
+                }
+
 
             }