Saving Measurements via SR from OHIF

[nutzlastfan]

Hello,

is it possible at the Moment to save measurements from OHIF Viewer with DicomCloud ?
Currently a least for me it is not working:

POST http://...8081/..WebApi/api/studies 415 (Unsupported Media Type)
dataExchange.js:73 [DICOMSR] Error while saving the measurements: request failed

The Post is send without a studyinstance id.

In DICOMCloud it ends up with a UnsupportedMediaType exception.

public async Task Post(string studyInstanceUID = null)
.....
if (!Request.Content.IsMimeMultipartContent("relate"))
{
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}

Is my configuration a fault here or something else ?

Thanks in advance.

[Zaid-Safadi]

Hey @nutzlastfan , can you please attach the request headers from the store request? You can get these from the developer console network tab

[nutzlastfan]

Ok, here is an example:

POST /WadoWebApi/api/studies HTTP/1.1 Host: ...:8081 Connection: keep-alive Content-Length: 4661 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36 Content-Type: multipart/related; type=application/dicom; boundary=64f60944-8be0-f031-3fc5-66eba78f402c Accept: */* Origin: http://..:8081 Referer: http://..:8081/viewer/1.2.276.0.74.1.2.209227.219243.132281559767744872637192791767744 Accept-Encoding: gzip, deflate Accept-Language: de-DE,de;q=0.9,en-US;q=0.8,en;q=0.7 Cookie: i18next=de-DE; SAPWP_active=1

[Zaid-Safadi]

OK, the request looks fine and the content-type header value is correct. What seems to be wrong is the line you posted from DICOMcloud, I am not sure why the code you have has the value "relate" instead of "related":

DICOMcloud/DICOMcloud.Wado.WebApi/Controllers/StudiesController.cs

Line 77 in c018ad1

if (!Request.Content.IsMimeMultipartContent("related"))

            if (!Request.Content.IsMimeMultipartContent("related"))
            {
                throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
            }

[nutzlastfan]

it was autocorrected from a browser plugin, in the code it is the right spelling
if (!Request.Content.IsMimeMultipartContent("relate"))

[Zaid-Safadi]

@nutzlastfan, check this: dcmjs-org/dcmjs#113

[nutzlastfan]

Ok, thanks for looking this up, I would have never thought of that as a possibility.

[wangning08115]

@nutzlastfan Have you solved the problem? I want Saving Measurements via SR from OHIF. And i am research start.
Can you help me provide some information?

[nutzlastfan]

Not recommended just for reference since the problem comes from ohif implementation not dicomcloud:

if (!Request.Content.IsMimeMultipartContent("related"))
        {
            var length = Request.Content.Headers.ContentLength.HasValue ? Request.Content.Headers.ContentLength.Value : -1L;
            byte[] byteBuffer = new byte[Request.Content.Headers.ContentLength.Value];
            byteBuffer = await Request.Content.ReadAsByteArrayAsync();
            string formData = System.Text.Encoding.ASCII.GetString(byteBuffer);
            string boundary = "\r\n" + Request.Content.Headers.ToString().Split(new string[] { "boundary=" }, StringSplitOptions.None)[1];
            string[] parts = System.Text.RegularExpressions.Regex.Split(formData, boundary);
            int dataOffset = 0;
            for (int i = 0; i < parts.Length; i++)
            {
                string header = parts[i].Substring(0, parts[i].IndexOf("\r\n\r\n"));
                dataOffset += header.Length + 4;
                string asciiBody = parts[i].Substring(parts[i].IndexOf("\r\n\r\n") + 4);
                int pos = asciiBody.IndexOf("--");
                byte[] body = new byte[pos-10];
                for (int j = dataOffset, k = 0; j < body.Length + (dataOffset)  ; j++)
                {
                    body[k] = byteBuffer[j];
                    k++;
                }
                return await StorageService.StoreSR(body);      
            }
        }

Body is essentially the structured report in byte[] form that you can just open in fo-dicom or save to disk etc.

[Dev-Now]

@Zaid-Safadi Looks like Dicomcloud has no support for SR... It just treats SR store requests like an image store request.

Any upcoming plans to support SR?

[Zaid-Safadi]

@Dev-Now responded at your ticket. thanks for your patience.