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合并多帧不保留偏移表
continuous-integration/drone/push Build is running Details

Test_IRC_Net8
hang 2026-06-03 11:07:04 +08:00
parent 2fb558d388
commit 2969306d1e
2 changed files with 26 additions and 9 deletions
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29
IRaCIS.Core.Application/Service/Common/TrialImageDownloadService.cs
View File

@ -61,8 +61,24 @@ namespace IRaCIS.Core.Application.Service
try
{
await using var source = await sourceFactory();
// 【关键修复】将 OSS 流缓冲到 MemoryStream
using var bufferedStream = new MemoryStream();
if (source.CanSeek)
{
source.Position = 0;
}
else
{
// 完全复制到内存流
await source.CopyToAsync(bufferedStream);
bufferedStream.Position = 0; // 重置位置
}
// 如果你是从 stream 打开
var dicomFile = await DicomFile.OpenAsync(source);
var dicomFile = await DicomFile.OpenAsync(source.CanSeek ? source : bufferedStream);
//获取像素是否为封装形式
var syntax = dicomFile.Dataset.InternalTransferSyntax;
@ -70,11 +86,14 @@ namespace IRaCIS.Core.Application.Service
//对于封装像素的文件做转换
if (syntax.IsEncapsulated)
{
#region 开始方式
// 获取 Pixel Data 标签
var pixelData = DicomPixelData.Create(dicomFile.Dataset);
// 创建一个新的片段序列
var newFragments = new DicomOtherByteFragment(DicomTag.PixelData);
// 获取每帧数据并封装为单独的片段
for (int n = 0; n < pixelData.NumberOfFrames; n++)
{
@ -82,13 +101,11 @@ namespace IRaCIS.Core.Application.Service
newFragments.Fragments.Add(new MemoryByteBuffer(frameData.Data));
}
var frag = dicomFile.Dataset.GetDicomItem<DicomOtherByteFragment>(DicomTag.PixelData);
var originOffsetTable = frag?.OffsetTable;
newFragments.OffsetTable.AddRange(originOffsetTable?.ToArray());
// 替换原有的片段序列
dicomFile.Dataset.AddOrUpdate(newFragments);
#endregion
}
await dicomFile.SaveAsync(output);

6
IRaCIS.Core.Application/Service/ImageAndDoc/StudyService.cs
View File

@ -104,11 +104,11 @@ namespace IRaCIS.Core.Application.Service.ImageAndDoc
newFragments.Fragments.Add(new MemoryByteBuffer(frameData.Data));
}
var frag = dicomFile.Dataset.GetDicomItem<DicomOtherByteFragment>(DicomTag.PixelData);
//var frag = dicomFile.Dataset.GetDicomItem<DicomOtherByteFragment>(DicomTag.PixelData);
var originOffsetTable = frag?.OffsetTable;
//var originOffsetTable = frag?.OffsetTable;
newFragments.OffsetTable.AddRange(originOffsetTable?.ToArray());
//newFragments.OffsetTable.AddRange(originOffsetTable?.ToArray());
// 替换原有的片段序列
dicomFile.Dataset.AddOrUpdate(newFragments);
}