diff --git a/IRaCIS.Core.Application/Service/SiteSurvey/DTO/TrialSiteEquipmentSurveyViewModel.cs b/IRaCIS.Core.Application/Service/SiteSurvey/DTO/TrialSiteEquipmentSurveyViewModel.cs
index 50d40bd2c..1b383906d 100644
--- a/IRaCIS.Core.Application/Service/SiteSurvey/DTO/TrialSiteEquipmentSurveyViewModel.cs
+++ b/IRaCIS.Core.Application/Service/SiteSurvey/DTO/TrialSiteEquipmentSurveyViewModel.cs
@@ -51,21 +51,21 @@ namespace IRaCIS.Core.Application.Contracts
 
 
         [Comment("扫描设备-New")]
-        public int EquipmentTypeEnum { get; set; }
+        public int? EquipmentTypeEnum { get; set; }
 
         public string OtherEquipmentType { get; set; }
 
         [Comment("扫描设备厂商")]
-        public int ManufacturerType { get; set; }
+        public int? ManufacturerType { get; set; }
 
         [Comment("磁场强度 (1.5T / 3.0T)")]
-        public int MagneticFieldStrengthType { get; set; }
+        public int? MagneticFieldStrengthType { get; set; }
 
         [Comment("体部线圈通道数 (≥16 或 ＜16)")]
-        public int BodyCoilChannelCount { get; set; }
+        public int? BodyCoilChannelCount { get; set; }
 
         [Comment("是否具备专用的PDFF脂肪定量序列（CSE-MRI序列）")]
-        public bool HasDedicatedPdfFatQuantificationSequence { get; set; }
+        public bool? HasDedicatedPdfFatQuantificationSequence { get; set; }
 
         [Comment("专用的PDFF脂肪定量序列类型 (当 HasDedicatedPdfFatQuantificationSequence = true 时有效)")]
         public int? PdfFatQuantificationSequenceType { get; set; }
@@ -74,10 +74,10 @@ namespace IRaCIS.Core.Application.Contracts
         public string OtherSequenceSpecification { get; set; }
 
         [Comment("是否包含 T2/R2 校正（用于铁沉积校正）")]
-        public bool HasT2R2Correction { get; set; }
+        public bool? HasT2R2Correction { get; set; }
 
         [Comment("是否可完整导出 PDFF 参数图及全部原始 DICOM 数据")]
-        public bool CanFullyExportPdfParameterMapsAndRawDicom { get; set; }
+        public bool? CanFullyExportPdfParameterMapsAndRawDicom { get; set; }
     }