diff --git a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingCalculateViewModel.cs b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingCalculateViewModel.cs
index a12d28ada..1cf028180 100644
--- a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingCalculateViewModel.cs
+++ b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingCalculateViewModel.cs
@@ -9,6 +9,16 @@ using System.Collections.Generic;
 namespace IRaCIS.Core.Application.Service.Reading.Dto
 {
 
+    public class GetPPDInfoInDto
+    {
+        public Guid VisitTaskId { get; set; }
+
+        public Guid QuestionId { get; set; }
+
+        public decimal RowIndex { get; set; }
+
+    }
+
     public class CalculateTaskInDto
     {
         public Guid VisitTaskId { get; set; }
diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
index c87934ed2..d5babeb63 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
@@ -11,6 +11,7 @@ using Microsoft.Extensions.Caching.Memory;
 
 using IRaCIS.Core.Infrastructure;
 using MassTransit;
+using System.Reflection.Metadata.Ecma335;
 
 namespace IRaCIS.Core.Application.Service.ReadingCalculate
 {
@@ -351,7 +352,61 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
             await ReadingCalculate(readingData,new List<QuestionType>() { type});
         }
 
+        /// <summary>
+        /// 获取最低PDD信息
+        /// </summary>
+        /// <param name="inDto"></param>
+        /// <returns></returns>
+        [HttpPost]
+        public async Task<GetPPDInfoOutDto> GetLowPPDInfo(GetPPDInfoInDto inDto)
+        {
+            GetPPDInfoOutDto result = new GetPPDInfoOutDto();
+            var taskinfo = await _visitTaskRepository.Where(x => x.Id == inDto.VisitTaskId).ProjectTo<VisitTaskDto>(_mapper.ConfigurationProvider).FirstNotNullAsync();
+            var visitTaskIds = await _visitTaskRepository.Where(x => x.ReadingCategory == ReadingCategory.Visit &&
+                 x.TrialReadingCriterionId == taskinfo.TrialReadingCriterionId &&
+                 x.IsAnalysisCreate == taskinfo.IsAnalysisCreate &&
+                  x.DoctorUserId == taskinfo.DoctorUserId &&
+                  x.IsSelfAnalysis == taskinfo.IsSelfAnalysis &&
+                 x.SubjectId == taskinfo.SubjectId && x.ReadingTaskState == ReadingTaskState.HaveSigned && x.ArmEnum == taskinfo.ArmEnum
+                 && x.VisitTaskNum < taskinfo.VisitTaskNum && x.TaskState == TaskState.Effect
+                 ).OrderByDescending(x => x.VisitTaskNum).Select(x => x.Id).ToListAsync();
 
+            var answerList = await _readingTableQuestionAnswerRepository.Where(x => visitTaskIds.Contains(x.VisitTaskId)
+              && x.QuestionId == inDto.QuestionId
+              && x.ReadingTableQuestionTrial.QuestionMark == QuestionMark.PPD && x.RowIndex == inDto.RowIndex)
+                  .Select(x => new
+                  {
+                      x.Answer,
+                      x.VisitTaskId,
+                  }).ToListAsync();
+
+            var lowPddTaskid = answerList.Select(x => new
+            {
+                Answer = x.Answer.IsNullOrEmptyReturn0(),
+                x.VisitTaskId
+            }).OrderBy(x => x.Answer).Select(x => x.VisitTaskId).FirstOrDefault();
+
+            if (lowPddTaskid != null&& lowPddTaskid!=default(Guid))
+            {
+               
+                var lowPPDAnswerList = await _readingTableQuestionAnswerRepository.Where(x => visitTaskIds.Contains(x.VisitTaskId)
+              && x.QuestionId == inDto.QuestionId
+             && x.RowIndex == inDto.RowIndex).Include(x => x.ReadingTableQuestionTrial)
+                  .Select(x => new
+                  {
+                      x.Answer,
+                      x.ReadingTableQuestionTrial.QuestionMark,
+                  }).ToListAsync();
+
+                result.LowPPDSDi = lowPPDAnswerList.Where(x => x.QuestionMark == QuestionMark.PPD).Select(x => x.Answer).FirstOrDefault().IsNullOrEmptyReturn0();
+                result.LowPPDLDi = lowPPDAnswerList.Where(x => x.QuestionMark == QuestionMark.MajorAxis).Select(x => x.Answer).FirstOrDefault().IsNullOrEmptyReturn0();
+                result.LowPPDSDi = lowPPDAnswerList.Where(x => x.QuestionMark == QuestionMark.ShortAxis).Select(x => x.Answer).FirstOrDefault().IsNullOrEmptyReturn0();
+                result.LowPPDVisit = await _visitTaskRepository.Where(x => x.Id == lowPddTaskid).Select(x => x.TaskBlindName).FirstOrDefaultAsync();
+            }
+
+            return result;
+
+        }
 
         /// <summary>
         /// 计算任务
diff --git a/IRaCIS.Core.Domain.Share/Reading/ReadEnum.cs b/IRaCIS.Core.Domain.Share/Reading/ReadEnum.cs
index 99889d0b2..0558b4bff 100644
--- a/IRaCIS.Core.Domain.Share/Reading/ReadEnum.cs
+++ b/IRaCIS.Core.Domain.Share/Reading/ReadEnum.cs
@@ -1533,10 +1533,66 @@ namespace IRaCIS.Core.Domain.Share
         /// </summary>
         Part = 8,
 
+        /// <summary>
+        /// 首次标记访视
+        /// </summary>
+        FirstMarkingVisit = 9,
+
+        /// <summary>
+        /// 部位描述
+        /// </summary>
+        BodyPartDescription = 10,
+
         /// <summary>
         /// 病灶数量
         /// </summary>
-        LesionNumber=11,
+        LesionNumber =11,
+
+        /// <summary>
+        /// PPD
+        /// </summary>
+        PPD = 12,
+
+        /// <summary>
+        /// 最低点PPD
+        /// </summary>
+        NadirPPD = 13,
+
+        /// <summary>
+        /// PPD最低点所在访视
+        /// </summary>
+        LowPPDVisit = 14,
+
+        /// <summary>
+        /// PPD最低点LDi
+        /// </summary>
+        LowPPDLDi = 15,
+
+        /// <summary>
+        /// PPD最低点SDi
+        /// </summary>
+        LowPPDSDi = 16,
+
+        /// <summary>
+        /// 相比最低点PPD增加百分比
+        /// </summary>
+        LowPPDAddPercent = 17,
+
+        /// <summary>
+        /// 相比PPD最低点LDi增加值
+        /// </summary>
+        LowPPDLDiAdded = 18,
+
+        /// <summary>
+        /// 相比PPD最低点SDi增加值
+        /// </summary>
+        LowPPDSDiAdded = 19,
+
+        /// <summary>
+        /// SUVmax
+        /// </summary>
+        SUVmax = 20
+
     }
 
     /// <summary>