diff --git a/IRaCIS.Core.Infra.EFCore/EntityConfigration/ImageConfigration.cs b/IRaCIS.Core.Infra.EFCore/EntityConfigration/ImageConfigration.cs
index dd78d1d62..fb50a7681 100644
--- a/IRaCIS.Core.Infra.EFCore/EntityConfigration/ImageConfigration.cs
+++ b/IRaCIS.Core.Infra.EFCore/EntityConfigration/ImageConfigration.cs
@@ -40,6 +40,8 @@ public class DicomInstanceConfigration : IEntityTypeConfiguration<DicomInstance>
     {
         builder.HasKey(e => e.SeqId);
 
+        builder.HasOne(e => e.DicomStudy).WithMany().HasForeignKey(t => t.StudyId).HasPrincipalKey(st => st.Id);
+
         builder.HasMany(s => s.ReadingTableAnswerRowInfoList).WithOne(di => di.Instance).HasForeignKey(t => t.InstanceId).HasPrincipalKey(se => se.Id);
         
     }
@@ -71,6 +73,8 @@ public class TaskInstanceConfigration : IEntityTypeConfiguration<TaskInstance>
     public void Configure(EntityTypeBuilder<TaskInstance> builder)
     {
         builder.HasKey(e => e.SeqId);
+
+        builder.HasOne(e => e.TaskStudy).WithMany().HasForeignKey(t => t.StudyId).HasPrincipalKey(st => st.Id);
     }
 }
 
@@ -105,6 +109,8 @@ public class SCPInstanceConfigration : IEntityTypeConfiguration<SCPInstance>
     public void Configure(EntityTypeBuilder<SCPInstance> builder)
     {
         builder.HasKey(e => e.SeqId);
+
+        builder.HasOne(e => e.SCPStudy).WithMany().HasForeignKey(t => t.StudyId).HasPrincipalKey(st => st.Id);
     }
 }