diff --git a/IRC.Core.SCP/Service/CStoreSCPService.cs b/IRC.Core.SCP/Service/CStoreSCPService.cs
index ce84949a6..6390fc803 100644
--- a/IRC.Core.SCP/Service/CStoreSCPService.cs
+++ b/IRC.Core.SCP/Service/CStoreSCPService.cs
@@ -728,7 +728,7 @@ namespace IRaCIS.Core.SCP.Service
 
                                     // 上传缩略图到 OSS
 
-                                    var seriesPath = await ossService.UploadToOSSAsync(memoryStream, ossFolderPath, seriesId.ToString() + ".preview.jpg", false);
+                                    var seriesPath = await ossService.UploadToOSSAsync(memoryStream, ossFolderPath, $"{seriesId.ToString()}_{instanceId.ToString()}.preview.jpg", false);
 
                                     Console.WriteLine(seriesPath + "  Id:  " + seriesId);
 
diff --git a/IRaCIS.Core.Application/TestService.cs b/IRaCIS.Core.Application/TestService.cs
index 9c061d9cb..87f938d98 100644
--- a/IRaCIS.Core.Application/TestService.cs
+++ b/IRaCIS.Core.Application/TestService.cs
@@ -1,4 +1,5 @@
 using Aliyun.OSS;
+using DocumentFormat.OpenXml.Bibliography;
 using FellowOakDicom;
 using FellowOakDicom.Imaging;
 using IRaCIS.Application.Contracts;
@@ -27,6 +28,7 @@ using Microsoft.Extensions.Options;
 using MiniExcelLibs;
 using NPOI.SS.Formula.Functions;
 using NPOI.XWPF.UserModel;
+using SixLabors.ImageSharp.Formats.Jpeg;
 using System.Globalization;
 using System.Runtime.InteropServices;
 using System.Text;
@@ -57,6 +59,31 @@ namespace IRaCIS.Core.Application.Service
         public static int IntValue = 100;
 
 
+        public async Task<IResponseOutput> TestImage(string fileFullPath)
+        {
+            var file = await DicomFile.OpenAsync(fileFullPath);
+            // 生成缩略图
+            using (var memoryStream = new MemoryStream())
+            {
+                DicomImage image = new DicomImage(file.Dataset);
+
+                var sharpimage = image.RenderImage().AsSharpImage();
+                sharpimage.Save(memoryStream, new JpegEncoder());
+
+
+                // 关键点：一定要回到开头
+                memoryStream.Position = 0;
+
+                using (var fileStream = File.Create($"{fileFullPath}.jpg"))
+                {
+                    await memoryStream.CopyToAsync(fileStream);
+                }
+
+            }
+
+            return ResponseOutput.Ok();
+        }
+
         /// <summary>
         /// 维护dir 需求新增的字段