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dcmjs-dimse

DICOM DIMSE implementation for Node.js using Steve Pieper's [dcmjs][dcmjs-url] library.
This library was inspired by [fo-dicom][fo-dicom-url] and [mdcm][mdcm-url].
Part of the networking code was taken from [dicom-dimse][dicom-dimse-url].

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This effort is a work-in-progress and should not be used for production or clinical purposes.

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npm install dcmjs-dimse

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npm install
npm run build

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- Implements C-ECHO, C-FIND, C-STORE, C-MOVE, C-GET, C-CANCEL, N-CREATE, N-ACTION, N-DELETE, N-EVENT-REPORT, N-GET and N-SET services as SCU and SCP.
- Supports secure DICOM TLS connections and user identity negotiation.
- Allows custom DICOM implementations (Implementation Class UID and Implementation Version).
- Provides asynchronous event handlers for incoming SCP requests.

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#### C-Echo SCU
``js
const dcmjsDimse = require('dcmjs-dimse');
const { Client } = dcmjsDimse;
const { CEchoRequest } = dcmjsDimse.requests;
const { Status } = dcmjsDimse.constants;

const client = new Client();
const request = new CEchoRequest();
request.on('response', (response) => {
if (response.getStatus() === Status.Success) {
console.log('Happy!');
}
});
client.addRequest(request);
client.on('networkError', (e) => {
console.log('Network error: ', e);
});
client.send('127.0.0.1', 12345, 'SCU', 'ANY-SCP');
`

#### C-Find SCU (Studies)
`js
const dcmjsDimse = require('dcmjs-dimse');
const { Client } = dcmjsDimse;
const { CFindRequest } = dcmjsDimse.requests;
const { Status } = dcmjsDimse.constants;

const client = new Client();
const request = CFindRequest.createStudyFindRequest({ PatientID: '12345', PatientName: '*' });
request.on('response', (response) => {
if (response.getStatus() === Status.Pending && response.hasDataset()) {
console.log(response.getDataset());
}
});
client.addRequest(request);
client.on('networkError', (e) => {
console.log('Network error: ', e);
});
client.send('127.0.0.1', 12345, 'SCU', 'ANY-SCP');
`

#### C-Store SCU
`js
const dcmjsDimse = require('dcmjs-dimse');
const { Client } = dcmjsDimse;
const { CStoreRequest } = dcmjsDimse.requests;

const client = new Client();
const request = new CStoreRequest('test.dcm');
client.addRequest(request);
client.on('networkError', (e) => {
console.log('Network error: ', e);
});
client.send('127.0.0.1', 12345, 'SCU', 'ANY-SCP');
`

#### C-Move SCU
`js
const dcmjsDimse = require('dcmjs-dimse');
const { Client } = dcmjsDimse;
const { CMoveRequest } = dcmjsDimse.requests;
const { Status } = dcmjsDimse.constants;

const client = new Client();
const request = CMoveRequest.createStudyMoveRequest('DEST-AE', studyInstanceUid);
request.on('response', (response) => {
if (response.getStatus() === Status.Pending) {
console.log('Remaining: ' + response.getRemaining());
console.log('Completed: ' + response.getCompleted());
console.log('Warning: ' + response.getWarnings());
console.log('Failed: ' + response.getFailures());
}
});
client.addRequest(request);
client.on('networkError', (e) => {
console.log('Network error: ', e);
});
client.send('127.0.0.1', 12345, 'SCU', 'ANY-SCP');
`

#### C-Get SCU
`js
const dcmjsDimse = require('dcmjs-dimse');
const { Client } = dcmjsDimse;
const { CGetRequest } = dcmjsDimse.requests;
const { CStoreResponse } = dcmjsDimse.responses;
const { Status } = dcmjsDimse.constants;

const client = new Client();
const request = CGetRequest.createStudyGetRequest(studyInstanceUid);
request.on('response', (response) => {
if (response.getStatus() === Status.Pending) {
console.log('Remaining: ' + response.getRemaining());
console.log('Completed: ' + response.getCompleted());
console.log('Warning: ' + response.getWarnings());
console.log('Failed: ' + response.getFailures());
}
});
client.on('cStoreRequest', (request, callback) => {
console.log(request.getDataset());

const response = CStoreResponse.fromRequest(request);
response.setStatus(Status.Success);
callback(response);
});
client.addRequest(request);
client.on('networkError', (e) => {
console.log('Network error: ', e);
});
client.send('127.0.0.1', 12345, 'SCU', 'ANY-SCP');
`

#### SCP
`js
const dcmjsDimse = require('dcmjs-dimse');
const { Dataset, Server, Scp } = dcmjsDimse;
const { CEchoResponse, CFindResponse, CStoreResponse } = dcmjsDimse.responses;
const {
Status,
PresentationContextResult,
UserIdentityType,
RejectResult,
RejectSource,
RejectReason,
TransferSyntax,
SopClass,
StorageClass,
} = dcmjsDimse.constants;

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

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

// Evaluate calling/called AET and reject association, if needed
if (this.association.getCallingAeTitle() !== 'SCU') {
this.sendAssociationReject(
RejectResult.Permanent,
RejectSource.ServiceUser,
RejectReason.CallingAeNotRecognized
);
return;
}

// Evaluate user identity and reject association, if needed
if (
this.association.getNegotiateUserIdentity() &&
this.association.getUserIdentityPositiveResponseRequested()
) {
if (
this.association.getUserIdentityType() === UserIdentityType.UsernameAndPasscode &&
this.association.getUserIdentityPrimaryField() === 'USERNAME' &&
this.association.getUserIdentitySecondaryField() === 'PASSWORD'
) {
this.association.setUserIdentityServerResponse('');
this.association.setNegotiateUserIdentityServerResponse(true);
} else {
this.sendAssociationReject(
RejectResult.Permanent,
RejectSource.ServiceUser,
RejectReason.NoReasonGiven
);
return;
}
}

// Optionally set the preferred max PDU length
this.association.setMaxPduLength(65536);

const contexts = association.getPresentationContexts();
contexts.forEach((c) => {
const context = association.getPresentationContext(c.id);
if (
context.getAbstractSyntaxUid() === SopClass.Verification ||
context.getAbstractSyntaxUid() === SopClass.StudyRootQueryRetrieveInformationModelFind ||
context.getAbstractSyntaxUid() === StorageClass.MrImageStorage
// Accept other presentation contexts, as needed
) {
const transferSyntaxes = context.getTransferSyntaxUids();
transferSyntaxes.forEach((transferSyntax) => {
if (
transferSyntax === TransferSyntax.ImplicitVRLittleEndian ||
transferSyntax === TransferSyntax.ExplicitVRLittleEndian
) {
context.setResult(PresentationContextResult.Accept, transferSyntax);
} else {
context.setResult(PresentationContextResult.RejectTransferSyntaxesNotSupported);
}
});
} else {
context.setResult(PresentationContextResult.RejectAbstractSyntaxNotSupported);
}
});
this.sendAssociationAccept();
}

// Handle incoming C-ECHO requests
cEchoRequest(request, callback) {
const response = CEchoResponse.fromRequest(request);
response.setStatus(Status.Success);

callback(response);
}

// Handle incoming C-FIND requests
cFindRequest(request, callback) {
console.log(request.getDataset());

const pendingResponse = CFindResponse.fromRequest(request);
pendingResponse.setDataset(new Dataset({ PatientID: '12345', PatientName: 'JOHN^DOE' }));
pendingResponse.setStatus(Status.Pending);

const finalResponse = CFindResponse.fromRequest(request);
finalResponse.setStatus(Status.Success);

callback([pendingResponse, finalResponse]);
}

// Handle incoming C-STORE requests
cStoreRequest(request, callback) {
console.log(request.getDataset());

const response = CStoreResponse.fromRequest(request);
response.setStatus(Status.Success);

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(port);

// When done
server.close();
``
Please check the respecting [Wiki][dcmjs-dimse-wiki-examples-url] section for more examples.

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* [dcmjs-imaging][dcmjs-imaging-url] - DICOM image and overlay rendering for Node.js and browser using dcmjs.
* [dcmjs-ecg][dcmjs-ecg-url] - DICOM electrocardiography (ECG) rendering for Node.js and browser using dcmjs.

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dcmjs-dimse is released under the MIT License.

[npm-url]: https://npmjs.org/package/dcmjs-dimse
[npm-version-image]: https://img.shields.io/npm/v/dcmjs-dimse.svg?style=flat

[build-url]: https://github.com/PantelisGeorgiadis/dcmjs-dimse/actions/workflows/build.yml
[build-image]: https://github.com/PantelisGeorgiadis/dcmjs-dimse/actions/workflows/build.yml/badge.svg?branch=master

[license-image]: https://img.shields.io/badge/license-MIT-blue.svg?style=flat
[license-url]: LICENSE.txt

[dcmjs-url]: https://github.com/dcmjs-org/dcmjs
[fo-dicom-url]: https://github.com/fo-dicom/fo-dicom
[mdcm-url]: https://github.com/fo-dicom/mdcm
[dicom-dimse-url]: https://github.com/OHIF/dicom-dimse
[dcmjs-imaging-url]: https://github.com/PantelisGeorgiadis/dcmjs-imaging
[dcmjs-ecg-url]: https://github.com/PantelisGeorgiadis/dcmjs-ecg

[dcmjs-dimse-wiki-examples-url]: https://github.com/PantelisGeorgiadis/dcmjs-dimse/wiki/Examples