diff --git a/IRaCIS.Core.Application/Service/Common/Export/IVUS_OCTExportService.cs b/IRaCIS.Core.Application/Service/Common/Export/IVUS_OCTExportService.cs
index 105f3c365..1ab731631 100644
--- a/IRaCIS.Core.Application/Service/Common/Export/IVUS_OCTExportService.cs
+++ b/IRaCIS.Core.Application/Service/Common/Export/IVUS_OCTExportService.cs
@@ -147,6 +147,8 @@ public class IvusExportDto : IVUS_OCTBaseDto
 
     /// <summary>PAV (如无可不填)</summary>
     public string PAV { get; set; }
+
+    public string DOST { get; set; }
 }
 
 /// <summary>
@@ -154,6 +156,11 @@ public class IvusExportDto : IVUS_OCTBaseDto
 /// </summary>
 public class OctExportDto : IVUS_OCTBaseDto
 {
+    /// <summary>
+    /// 斑块到血管开口的距离
+    /// </summary>
+    public string DOST { get; set; }
+
     /// <summary>靶段</summary>
     public string TARGETV { get; set; }
 
@@ -444,6 +451,11 @@ public class IVUS_OCTExportService(IRepository<ReadingQuestionCriterionTrial> _r
 
                     ivus.PAV = findPAVLession?.LessionAnswerList.Where(t => t.QuestionMark == QuestionMark.PAV).FirstOrDefault()?.QuestionValue ?? string.Empty;
 
+
+                    ivus.DOST = findPAVLession?.LessionAnswerList.Where(t => t.QuestionMark == QuestionMark.PlaqueToOstiumDistance).FirstOrDefault()?.QuestionValue ?? string.Empty;
+
+                    
+
                     ivusList.Add(ivus);
 
                 }
@@ -785,6 +797,8 @@ public class IVUS_OCTExportService(IRepository<ReadingQuestionCriterionTrial> _r
         }
 
 
+        //    斑块到血管开口的距离 
+        oct.DOST = findLession?.LessionAnswerList.Where(t => t.QuestionMark == QuestionMark.PlaqueToOstiumDistance).FirstOrDefault()?.QuestionValue ?? string.Empty;
 
         //     匹配动脉段最小FCT 
         oct.MINFCT = findLession?.LessionAnswerList.Where(t => t.QuestionMark == QuestionMark.MiniMumFCT).FirstOrDefault()?.QuestionValue ?? string.Empty;
diff --git a/IRaCIS.Core.Domain.Share/Reading/ReadEnum.cs b/IRaCIS.Core.Domain.Share/Reading/ReadEnum.cs
index e95738f52..f3588bcb7 100644
--- a/IRaCIS.Core.Domain.Share/Reading/ReadEnum.cs
+++ b/IRaCIS.Core.Domain.Share/Reading/ReadEnum.cs
@@ -2444,8 +2444,10 @@ namespace IRaCIS.Core.Domain.Share
         /// </summary>
         LumenAreaMeasurement = 1030,
 
-
-
+        /// <summary>
+        /// 斑块到血管开口的距离
+        /// </summary>
+        PlaqueToOstiumDistance=1031,
 
         /// <summary>
         /// 第一次测量