diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/IVUSCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/IVUSCalculateService.cs
index 716a6b373..d28b0355e 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/IVUSCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/IVUSCalculateService.cs
@@ -640,7 +640,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
             }
             else
             {
-                return eEMLumenSum/ eEMSum * 100+100;
+                return eEMLumenSum / eEMSum * 100;
             }
         }