import com.google.api.client.http.HttpHeaders;
import com.google.api.client.http.HttpRequestInitializer;
import com.google.api.client.http.HttpResponse;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.healthcare.v1.CloudHealthcare;
import com.google.api.services.healthcare.v1.CloudHealthcare.Projects.Locations.Datasets.DicomStores.Studies;
import com.google.api.services.healthcare.v1.CloudHealthcareScopes;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Collections;
public class DicomWebRetrieveStudy {
private static final String DICOM_NAME = "projects/%s/locations/%s/datasets/%s/dicomStores/%s";
private static final JsonFactory JSON_FACTORY = new JacksonFactory();
private static final NetHttpTransport HTTP_TRANSPORT = new NetHttpTransport();
public static void dicomWebRetrieveStudy(String dicomStoreName, String studyId)
throws IOException {
// String dicomStoreName =
// String.format(
// DICOM_NAME, "your-project-id", "your-region-id", "your-dataset-id", "your-dicom-id");
// String studyId = "your-study-id";
// Initialize the client, which will be used to interact with the service.
CloudHealthcare client = createClient();
// Create request and configure any parameters.
Studies.RetrieveStudy request =
client
.projects()
.locations()
.datasets()
.dicomStores()
.studies()
.retrieveStudy(dicomStoreName, "studies/" + studyId);
// Execute the request and process the results.
HttpResponse response = request.executeUnparsed();
// When specifying the output file, use an extension like ".multipart".
// Then, parse the downloaded multipart file to get each individual
// DICOM file.
String outputPath = "study.multipart";
OutputStream outputStream = new FileOutputStream(new File(outputPath));
try {
response.download(outputStream);
System.out.println("DICOM study written to file " + outputPath);
} finally {
outputStream.close();
}
if (!response.isSuccessStatusCode()) {
System.err.print(
String.format("Exception retrieving DICOM study: %s\n", response.getStatusMessage()));
throw new RuntimeException();
}
}
private static CloudHealthcare createClient() throws IOException {
// Use Application Default Credentials (ADC) to authenticate the requests
// For more information see https://cloud.google.com/docs/authentication/production
GoogleCredentials credential =
GoogleCredentials.getApplicationDefault()
.createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));
HttpHeaders headers = new HttpHeaders();
// The response's default transfer syntax is Little Endian Explicit.
// As a result, if the file was uploaded using a compressed transfer syntax,
// the returned object will be decompressed. This can negatively impact performance and lead
// to errors for transfer syntaxes that the Cloud Healthcare API doesn't support.
// To avoid these issues, and if the returned object's transfer syntax doesn't matter to
// your application, use the
// multipart/related; type="application/dicom"; transfer-syntax=* Accept Header.
headers.setAccept("multipart/related; type=application/dicom; transfer-syntax=*");
// Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
HttpRequestInitializer requestInitializer =
request -> {
new HttpCredentialsAdapter(credential).initialize(request);
request.setConnectTimeout(60000); // 1 minute connect timeout
request.setReadTimeout(60000); // 1 minute read timeout
};
// Build the client for interacting with the service.
return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
.setApplicationName("your-application-name")
.build();
}
}
def dicomweb_retrieve_study(
project_id, location, dataset_id, dicom_store_id, study_uid
):
"""Handles the GET requests specified in the DICOMweb standard.
See https://github.com/GoogleCloudPlatform/python-docs-samples/tree/main/healthcare/api-client/v1/dicom
before running the sample."""
# Imports Python's built-in "os" module
import os
# Imports the google.auth.transport.requests transport
from google.auth.transport import requests
# Imports a module to allow authentication using a service account
from google.oauth2 import service_account
# Gets credentials from the environment.
credentials = service_account.Credentials.from_service_account_file(
os.environ["GOOGLE_APPLICATION_CREDENTIALS"]
)
scoped_credentials = credentials.with_scopes(
["https://www.googleapis.com/auth/cloud-platform"]
)
# Creates a requests Session object with the credentials.
session = requests.AuthorizedSession(scoped_credentials)
# URL to the Cloud Healthcare API endpoint and version
base_url = "https://healthcare.googleapis.com/v1"
# TODO(developer): Uncomment these lines and replace with your values.
# project_id = 'my-project' # replace with your GCP project ID
# location = 'us-central1' # replace with the parent dataset's location
# dataset_id = 'my-dataset' # replace with the parent dataset's ID
# dicom_store_id = 'my-dicom-store' # replace with the DICOM store ID
# study_uid = '1.3.6.1.4.1.5062.55.1.227' # replace with the study UID
url = "{}/projects/{}/locations/{}".format(base_url, project_id, location)
dicomweb_path = "{}/datasets/{}/dicomStores/{}/dicomWeb/studies/{}".format(
url, dataset_id, dicom_store_id, study_uid
)
# When specifying the output file, use an extension like ".multipart."
# Then, parse the downloaded multipart file to get each individual
# DICOM file.
file_name = "study.multipart"
response = session.get(dicomweb_path)
response.raise_for_status()
with open(file_name, "wb") as f:
f.write(response.content)
print("Retrieved study and saved to {} in current directory".format(file_name))
return response
