An example of SCP-Cstore stored as a dcm file

[liaohongxing]

An example of SCP-Cstore stored as a dcm file , Can you give me some guidance or an example

[PantelisGeorgiadis]

Hello @liaohongxing! Thank you for your question! Here's a snippet (actually it is a cut-down version of the SCP example) that can store a Dataset received through C-STORE SCP to disk, as a DICOM part10 file.

const dcmjsDimse = require('dcmjs-dimse');
const { Server, Scp } = dcmjsDimse;
const { CStoreResponse } = dcmjsDimse.responses;
const {
  Status,
  PresentationContextResult,
  TransferSyntax,
} = dcmjsDimse.constants;

class DcmjsDimseScp extends Scp {
  constructor(socket, opts) {
    super(socket, opts);
    this.association = undefined;
  }

  // Handle incoming association requests
  associationRequested(association) {
    this.association = association;

    const contexts = association.getPresentationContexts();

    // TODO: Here you can filter only the image storage classes
    // for which you are only interested
    contexts.forEach((c) => {
      const context = association.getPresentationContext(c.id);
      context.setResult(
        PresentationContextResult.Accept,
        TransferSyntax.ExplicitVRLittleEndian);
      });
    this.sendAssociationAccept();
  }

  // Handle incoming C-STORE requests
  cStoreRequest(request, callback) {
    // Get received dataset
    const dataset = request.getDataset();

    // Generate a random filename based on time
    const randomFileName = new Date().getTime().toString();
    // Save the received dataset to disk, as a DICOM part10 file
    dataset.toFile(`${randomFileName}.DCM`);

    // Create a positive response
    const response = CStoreResponse.fromRequest(request);
    response.setStatus(Status.Success);

    // Send back the response
    callback(response);
  }

  // Handle incoming association release requests
  associationReleaseRequested() {
    this.sendAssociationReleaseResponse();
  }
}

const server = new Server(DcmjsDimseScp);
server.on('networkError', (e) => {
  console.log('Network error: ', e);
});
server.listen(2104);

Let me know if that works for you.

[liaohongxing]

Thanks for your example, it seems that dcm elements data is stored in this example, I wonder if pixel data also exists in this dcm file

[PantelisGeorgiadis]

Yes, this example saves all received elements, including the pixel data.

[liaohongxing]

Thank you for your patient answer, I will continue to try this library, this library is amazing

[PantelisGeorgiadis]

Thank you Sir!