get DSRWaveformReferenceValue

[ancrou]

Hi,

I've found the function which used the DSRWaveformReferenceValue. Nevertheless I've not found yet, how should I get the DSRWaveformReferenceValue
The aim of my project is to read DICOM file.

Best regards

[Michael Onken]

Hi,

there is no real tutorial on how to use DCMTK. For reading and writing DICOM files in general, you use functions from the module "dcmdata", which resides in the directory with the same name. It is documented here, including a short code example for reading/writing specific attributes.

The most important class for accessing specific values is DcmItem, whose API is documented here.

Regards,
Michael

[ancrou]

Hi Michael,

Thanks for your answer.

I can get the DcmItems (eg: Patient’s Name, Patient ID, ...) . Moreover I can get the DcmSequenceOfItems.
But I cannot get the DSRWaveform. It's sad because there are some functions whose used the waveform (eg: DSRWaveformChannelItem, ...).

So what is the connexion between DSRWaveform and DcmFileFormat.

Best regards,

Anth

[Jörg Riesmeier]

Class DSRWaveformReferenceValue is used for DICOM Structured Reporting documents only (see module "dcmsr").

The aim of my project is to read DICOM file.

What exactly do you want to do?

[ancrou]

I want to plot the ECG waveform. For that, I need to read the values in (5400,1010) Waveform Data, ...
I tried the following code :

Code: Select all

DcmSequenceOfItems* dseq;
if(fileformat.getDataset()->findAndGetSequence(DCM_WaveformSequence,dseq).good())

But I don't know to use the DcmSequenceOfItems.

Moreover I tried the following code:

Code: Select all

const Uint16* value;
fileformat.getDataset()->findAndGetUint16Array(DCM_WaveformData,value);

[Michael Onken]

Hi,

e. g. you can try that:

Code: Select all

DcmDataset* dset = NULL;
dset = fileformat.getDataset();
DcmItem *item = NULL;
if(dset->findAndGetSequenceItem(DCM_WaveformSequence,item,0).good())
{
 // now item has a pointer to the first item (0) in the Waveform Sequence.
}

Regards,
Michael