Unable to parse the data at multipart file while calling dicomWebRetrieveStudy.js API

[nehawankar174]

Hello,

I am trying to call dicomWebRetrieveStudy API by calling healthcare/dicom/dicomWebRetrieveStudy.js file, here I am able to create multipart file. The response type is arraybuffer. I have attached the screenshot for response what I am getting now.

But now I want to parse the response in JSON format. How can I achieve the responce in JSON format.

Can anyone help for the same.

Thanks

[fhinkel]

👋 @nehawankar174 Thanks for opening the issue. @noerog Could you have a look please. Thanks.

[noerog]

Hi Nehawankar, this method is used to retrieve a multipart study file that you can parse to get each individual DICOM file. It is not intended to give a JSON response. What are you expecting in the JSON?

[nehawankar174]

Hi Noerog,

Thanks for your quick response :)
I am looking for DICOM tags in the JSON file format along with DICOM file for the study.
I was expecting the result in JSON format as below:

[
{
"00020002": {
"Value": [
"1.2.840.10008.5.1.4.1.1.7"
],
"vr": "UI"
},
"00020013": {
"Value": [
"dcm4che-1.4.35"
],
"vr": "SH"
},
"00080005": {
"Value": [
"ISO_IR 100"
],
"vr": "CS"
},
"00080023": {
"Value": [
"20160503"
],
"vr": "DA"
},
"00080033": {
"Value": [
"105946.779000"
],
"vr": "TM"
},
}
]

In addition, if I am retrieving study details after the inference from Inference store, how I can parse multiple DICOM files and multiple JSON Files (2 .dcm + 2 .json)

Thanks!

[noerog]

If you want to receive a JSON response with details about the study, you should use the Search transaction searchForStudies method (https://cloud.google.com/healthcare/docs/reference/rest/v1beta1/projects.locations.datasets.dicomStores/searchForStudies). We have some samples of how to use the Search transaction for instances in https://cloud.google.com/healthcare/docs/how-tos/dicomweb#searching_for_studies_series_instances_and_frames, but you can do the same thing with studies.

Can you clarify what you mean by inference store?

[nehawankar174]

Hey Noerog,

searchForStudies method worked for us and getting the response in JSON format.
And "My Inference Store” is from below notebook,
https://github.com/GoogleCloudPlatform/healthcare/blob/master/imaging/ml_codelab/breast_density_auto_ml.ipynb

At the bottom, there’s reference for “My Inference Store”

Thanks!

[noerog]

If you retrieve a study, you need to parse it based on the multipart boundaries. There are many Node.js libraries for doing this and for parsing JSON.