使用dcmtk覆盖dicom文件中的图像/像素数据 [英] Overwrite an image/pixel data in the dicom file using dcmtk

问题描述

我使用dcmtk读取dicom文件并将图像提取为.tiff格式。做了一些图像处理后，我有一个图像，我想保存在源dicom文件中。这是用我的新图像覆盖旧的图像/像素数据，同时保留其余的数据（uid，患者姓名等）相同。

I use dcmtk to read a dicom file and extract the image into a .tiff format. After doing some image processing I have an image which I would like to save in the source dicom file.That is overwriting the old image/pixel data with my new ones, while keeping rest of the data(uid,patient name,,etc) same.

我使用以下代码阅读dicom

I use the following code to read dicom

OFCondition status = src_fileformat.loadFile(src_path);

    if (status.good())
    {
        Sint32 instanceNumber = 0;
        if (src_fileformat.getDataset()->findAndGetSint32(DCM_InstanceNumber, instanceNumber).good())
        {
            cout << "instance Number N: " << instanceNumber << endl;
            sprintf(instanceNum, "%d", instanceNumber);
            printf("%s\n", instanceNum);
        }

        else
            cerr << "Error: cannot access Instance Number!" << endl;
    }
    else
        cerr << "Error: cannot read DICOM file (" << status.text() << ")" << endl;

    src_dcm = new DicomImage(src_path);
    if (src_dcm != NULL)
    {
        if (src_dcm->getStatus() == EIS_Normal)
        {
            if (src_dcm->isMonochrome())
            {
                src_dcm->setMinMaxWindow();
                Uint8 *pixelData = (Uint8 *)(src_dcm->getOutputData(16 /* bits */));
                if (pixelData != NULL)
                {
                    src_dcm->writeBMP("source.tiff", 24);  /* do something useful with the pixel data */
                }
            }
        }
        else
            cerr << "Error: cannot load DICOM image (" << DicomImage::getString(src_dcm->getStatus()) << ")" << endl;
    }

图像处理完成后，我想要覆盖此源码的图像文件。我查看了image2dcm，但我无法获得正确的语法/方法。任何人帮助我.. :)

After image processing I have an image that I want to overwrite onto this source dicom file. I looked into image2dcm,but I couldn't get the correct syntax/method to do. any one help me out.. :)

编辑-1

Image2Dcm i2d; 
I2DOutputPlug *outPlug = new I2DOutputPlugSC(); 
 I2DImgSource *inputPlug = new I2DJpegSource(); 
 E_TransferSyntax writeXfer; 
 inputPlug->setImageFile(jpgFile); 
DcmDataset *dataset = NULL; 
OFCondition result = i2d.convert(inputPlug, outPlug, dataset, writeXfer); 

   // Saving output DICOM image 
  if (result.good()) 
      { 
        dataset->putAndInsertString(DCM_PhotometricInterpretation,"RGB"); 

            DcmFileFormat dcmff(dataset); 
    result = dcmff.saveFile(dcmFile, writeXfer); 
       }

我尝试了上面显示的语法，但无法完全理解

I tried the above shown syntax,but couldn't exactly understand it

这是已处理的图片（上图）

This is the processed image(above)

这是我想要的原始dicom图像覆盖。伙计们，任何想法或帮助??

This is the original dicom image that I want to overwrite. Guys ,any idea or help??

推荐答案

基本方法应该是：

1. 从文件加载DICOM数据集


2. 替换数据集中的像素数据


3. 修改其他各种元素值（例如SOP实例UID）


4. 将修改后的DICOM数据集保存到新文件

1. load the DICOM dataset from file
2. replace the pixel data in the dataset
3. modify various other element values (e.g. SOP Instance UID)
4. save the modified DICOM dataset to a new file

在未压缩图像的情况下，第二步可以以与第三步相同的方式执行，即通过在数据集上适当调用putAndInsertXXX（）方法。当然，Pixel Data属性的元素值应该是正确的DICOM格式。有关详细信息，请参阅 DICOM标准第3部分和第5部分。

In case of uncompressed images, the second step could be performed in the same manner as the third step, i.e. by an appropriate call of a putAndInsertXXX() method on the dataset. Of course, the element value of the Pixel Data attribute should be in correct DICOM format. See DICOM standard part 3 and 5 for details.

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