diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
index 4f4bc1cf9..e6b756e08 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
@@ -2272,7 +2272,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
                 VisitTaskId=inDto.VisitTaskId,
             });
 
-            return studyList.Any(x => x.Modalities.Contains("CT")) ? ReadingYesOrNo.Yes.GetEnumInt() : ReadingYesOrNo.No.GetEnumInt();
+            return studyList.Any(x => x.Modalities.Contains("PET")) ? ReadingYesOrNo.Yes.GetEnumInt() : ReadingYesOrNo.No.GetEnumInt();
         }
 
         #region 影像学整体肿瘤评估