diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
index b5476d799..72131fd0d 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
@@ -2590,6 +2590,10 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
         /// <returns></returns>
         public async Task<string> CTMRIEvaluation(ReadingCalculateDto inDto)
         {
+            if (inDto.IsBaseLine)
+            {
+                return CTMRIOverallAssessment.NA.GetEnumInt();
+            }
             // 靶病灶评估
             var targetEvaluation = inDto.QuestionInfo.Where(x => x.QuestionType == QuestionType.TargetLesion).Select(x => x.Answer).FirstOrDefault();