Unable to change PixelData correctly

[nagayev]

Hello. I'm trying open dcm file, change PixelData (load it from raw file) and then save the result.
I have this working code sample using DCMTK library for C++:

    DcmFileFormat fileformat;
    OFCondition status = fileformat.loadFile("input.dcm");
    resultDset = fileformat.getDataset();
    int height = 2800;
    int width = 2304;
    int size = height*width;
    uint16_t* data = new uint16_t[size];
    FILE* pixelStream = fopen("test.bin","rb");
    if (!pixelStream){
        printf("Coudn't open binary file\n");
        return;
    }
    fread(data,sizeof(uint16_t),size,pixelStream);
    fclose(pixelStream);
    resultDset->putAndInsertUint16Array(DCM_PixelData, data, size);

This is my Python script:

import numpy
from pydicom import dcmread
ds = dcmread("input.dcm")
pixels=numpy.fromfile('test.bin',dtype=numpy.uint16)
ncols=2304
pixels.shape=(pixels.size//ncols, ncols)
ds.PixelData=pixels.tobytes()
ds.save_as("output.dcm")

The output.dcm file was written incorrectly: i see black window instead of image.

[nagayev]

Zipped test.bin:
test.zip
DCM file:
input.zip

[mrbean-bremen]

Your file in input.zip is not a DICOM file, it's a TIFF file with a DICOM extension. May be you have provided the wrong file?