Web server

jweste · Jul 26th 2022

Quote from marcelvanherk

The code should be changed as follows (this is for myself):

add parameter dicomweb

every check for an item having one value should be bypassed for dicomweb e.g.

if (vr->Length==4 && !dicomweb)

if (vr->Length>4 | | dicomweb)

For dicomweb the variable name should be generated as folllows, e.g.:

"00201208": {

"vr": "IS",

"Value":

Then add a variable br3 that is empty except for dicomweb where it would be "}"

to add the the closing } all sprintf lines like 7779 should then become:

Index+=sprintf(result+Index, "%s%c\"%s\"%s,", name, eq, t, br3);

I think this would bring it a long way for query results, it would not be enough for images.

Marcel

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As I have read qido is used in queries. Retrieve dicom objets uses wado-rs and retrieve instances uses wado-uri. https://www.dicomstandard.org/using/dicomweb

marcelvanherk · Jul 26th 2022

query uses QIDO-RS. It can be safely combined with the "old fashioned" wado-rs.

Marcel

marcelvanherk · Jul 27th 2022

Does this look good (WIP)

x = DicomObject:new()

x.PatientID = "a123"

x.SeriesInstanceUID= "123.123.123"

x.InstanceNumber=100

print(x:Serialize(true, true, true))

{"00100020": { "vr": "LO", "Value":"a123"},"0020000e": { "vr": "UI", "Value":"123.123.123"},"00200013": { "vr": "IS", "Value":"100 "}}\\

dgate.zip

Marcel

jweste · Jul 27th 2022

Quote from marcelvanherk

Does this look good (WIP)

x = DicomObject:new()

x.PatientID = "a123"

x.SeriesInstanceUID= "123.123.123"

x.InstanceNumber=100

print(x:Serialize(true, true, true))

{"00100020": { "vr": "LO", "Value":"a123"},"0020000e": { "vr": "UI", "Value":"123.123.123"},"00200013": { "vr": "IS", "Value":"100 "}}\\

dgate.zip

Marcel

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Thank you,

I will try it.

Does the third parameter in serialize mean dicomweb result?

Do I have to put this new dgate.exe into remote conquest server or only in my backend api?

On conquest remote server I use dgate64.

I have tried the next code and I get no results:

Code

function studies(server,params,dicomweb)
    local ae = server or servercommand('get_param:MyACRNema')
    a=DicomObject:new(params)
    b=remotequery(ae, 'STUDY', a, dicomweb)
    io.write(b)
end;
    
function remotequery(ae, level, q, dicomweb)
    local isdicomweb
     if (dicomweb == nil or dicomweb == '') then isdicomweb= false end;
    local remotecode = 
  [[
    local ae=']]..ae..[[';
    local level=']]..level..[[';
    local dicomweb=']]..isdicomweb..[[';
    local q=]]..q:Serialize()..[[;
    local q2=DicomObject:new(); for k,v in pairs(q) do q2[k]=v end;
    local r = dicomquery(ae, level, q2):Serialize(true,true,dicomweb);
    local s=tempfile('txt') local f=io.open(s, "wb") f:write(r) returnfile=s f:close();
  ]]
   local f = servercommand('lua:'..remotecode)
   return f
  end;
  
..... 
  const params = JSON.stringify({
    QueryRetrieveLevel: "STUDY",
    StudyInstanceUID: StudyInstanceUID || "",
    PatientID: "86542",
    PatientName: PatientName || "",
    // PatientBirthDate: PatientBirthDate || "",  not suported  in qido
    StudyDate: StudyDate || "", // '19000101-20221231'
  });
  const dicomweb = true;
  const cmd = `--dolua:dofile([[${APIFOLDER}/queryfunctions.lua]]);studies([[${CQAE}]],[[${params}]],[[${dicomweb}]])`; 
  .....

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marcelvanherk · Jul 28th 2022

Hi,

you can download zerobrane studio and run install.lua to get a proper debugger. I fixed a few bugs in your code below.

The serialiser runs in the server so the new dgate should be there. If you use the old one it just returns the original format.

Marcel

Code

function remotequery(ae, level, q, dicomweb)
    local isdicomweb=true
     if (dicomweb == nil or dicomweb == '') then isdicomweb= false end;
    local remotecode = 
  [[
    local ae=']]..ae..[[';
    local level=']]..level..[[';
    local dicomweb=]]..tostring(isdicomweb)..[[;
    local q=]]..q:Serialize()..[[;
    local q2=DicomObject:new(); for k,v in pairs(q) do q2[k]=v end;
    local r = dicomquery(ae, level, q2):Serialize(true,true,dicomweb);
    local s=tempfile('txt') local f=io.open(s, "wb") f:write(r) returnfile=s f:close();
  ]]
   local f = servercommand('lua:'..remotecode)
   return f
  end;

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marcelvanherk · Jul 28th 2022

Sample output:

Code

[{"00020010": { "vr": "UI", "Value":"1.2.840.10008.1.2"},"00080052": { "vr": "CS
", "Value":"STUDY"},"00100020": { "vr": "LO", "Value":"0009703828"},"0020000d":
{ "vr": "UI", "Value":"1.3.46.670589.5.2.10.2156913941.892665384.993397"}}]

to use dgate.exe instead of dgate64.exe rename dgate64.exe and copy dgate.exe to the dicomserver folder.

Marcel

marcelvanherk · Jul 28th 2022

I see the Value items miss the [].

Marcel

marcelvanherk · Jul 28th 2022

try this one:

dgate.zip

Code

[{"00020010": { "vr": "UI", "Value":["1.2.840.10008.1.2"]},"00080052": { "vr": "
CS", "Value":["STUDY"]},"00100020": { "vr": "LO", "Value":["0009703828"]},"00200
00d": { "vr": "UI", "Value":["1.3.46.670589.5.2.10.2156913941.892665384.993397"]
}}]

jweste · Jul 28th 2022

Quote from marcelvanherk

try this one:

dgate.zip

Code

[{"00020010": { "vr": "UI", "Value":["1.2.840.10008.1.2"]},"00080052": { "vr": "
CS", "Value":["STUDY"]},"00100020": { "vr": "LO", "Value":["0009703828"]},"00200
00d": { "vr": "UI", "Value":["1.3.46.670589.5.2.10.2156913941.892665384.993397"]
}}]

Hi, Marcel

It starts to work.

But, the docs say in https://dicom.nema.org/medical…part18/sect_10.6.3.3.html about response payload.

I can´t get many of these tags in the response.

"For each matching Study, the origin server response shall contain Attributes in accordance with Table 10.6.3-3. The "Type" column in the table below refers to the Query/Retrieve Attribute Types defined in Section C.2.2.1 “Attribute Types” in PS3.4. The unique key for a Study resource Search response is the Study Instance UID (0020,000D)."

In addition, the response shall contain:

All other Study level Attributes passed as match or includefield parameters in the request that are supported by the origin server.

If the includefield parameter has been specified in the request, and its value is "all", all available Study Level Attributes.

If a Private Data Element has been specified as an include parameter and it is supported by the origin server, the Private Data Element and its corresponding Private Creator Element.

Series or Instance Level Attributes contained in includefield parameters shall not be returned."

Response payload

Legend

R=required

U=Unique

C=Conditional

Study Date (0008,0020) R

Study Time(0008,0030) R

Accession Number (0008,0050) R

Instance Availability (0008,0056) C Shall be present if known

Modalities in Study (0008,0061) R

Referring Physician's Name (0008,0090) R

Timezone Offset From UTC (0008,0201) C Shall be present if known Retrieve

URL (0008,1190) C Shall be present if the Instance is retrievable by the Retrieve transaction

Patient's Name (0010,0010) R

Patient ID (0010,0020) R

Patient's Birth Date (0010,0030)R

Patient's Sex (0010,0040) R

Study Instance UID (0020,000D) U

Study ID (0020,0010) R

Number of Study Related Series (0020,1206) R

Number of Study Related Instances (0020,1208) R

jweste · Jul 28th 2022

Hi, Marcel

I am doing connection test with the API and Remote Conquest Server 1.5.0b.

I have a conquest server in Amazon AWS.

The AE, IP and Port are: CONQUESTLOCAL, 15.ZZZ.73.XXX and 3010

IP and Port are opened in firewall

In my local windows PC, I do in the command console:

Code

dgate.exe -p3010 -hCONQUESTLOCAL -q15.ZZZ.73.XXX "--dolua:dofile([[queryfunctions.lua]]);echo([[CONQUESTLOCAL]])"

I have no response. The command doesn´t appears in the remote conquest log

Do I have to configure something more?

All is working if running conquest in my local PC

Code

// remote conquest dicom providers
CONQUESTLOCAL		127.0.0.1	3010		un
S*  *   5678            un
.....
...

Code

// queryfunctions.lua
function echo(server)
local ae = server or servercommand('get_param:MyACRNema')
local remotecode =
[[
local ae=']]..ae..[[';
if (dicomecho(ae)) then return 1 else return 0 end;
]]
r=servercommand('lua:'..remotecode)
io.write(r or 0)
end;

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marcelvanherk · Jul 28th 2022

Hi,

1) to get more items in the answers you have to ask from them, just say e.g. "StudyID":""

2) can you test you can query the AMAZON server?

Marcel

jweste · Jul 28th 2022

Quote from marcelvanherk

Hi,

1) to get more items in the answers you have to ask from them, just say e.g. "StudyID":""

2) can you test you can query the AMAZON server?

Marcel

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>>> 2) can you test you can query the AMAZON server?

yes, I do.

If I do a http post from my local PC to copy api running on remote server as: https://15.CCC73.CCCC:3002/api/dicom/dicomImages I get:

    "data": [
{
            "TransferSyntaxUID": "1.2.840.10008.1.2",
            "SOPInstanceUID": "1.2.392.200036.9107.307.31295.20220527.171921.1051137",
            "ConquestImageDate": "20220527",
            "ConquestImageTime": "172233",
            "QueryRetrieveLevel": "IMAGE",

.....

But dgate command line from my dev PC as:

Code

dgate.exe -p3010 -hCONQUESTLOCAL -q15.ZZZ.73.XXX "--dolua:dofile([[queryfunctions.lua]]);echo([[CONQUESTLOCAL]])"

doesn´t work

jweste · Jul 28th 2022

Marcel,

Sorry for that,

I just solved it.

I had to open the port in aws console as well

jweste · Jul 28th 2022

Quote from marcelvanherk

Hi,

1) to get more items in the answers you have to ask from them, just say e.g. "StudyID":""

2) can you test you can query the AMAZON server?

Marcel

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>> 1) to get more items in the answers you have to ask from them, just say e.g. "StudyID":""

Maybe I has misunderstood the docs, But I think some tags are mandatory even if you doesn´t ask in the query.

The tags marked as "R" are Required as showing below( https://dicom.nema.org/medical…part18/sect_10.6.3.3.html ). Am I wrong?

Code

Legend
R=required
U=Unique
C=Conditional


Study Date (0008,0020) R
Study Time(0008,0030) R
Accession Number (0008,0050) R
Instance Availability (0008,0056) C Shall be present if known
Modalities in Study (0008,0061) R
Referring Physician's Name (0008,0090) R
Timezone Offset From UTC (0008,0201) C Shall be present if known Retrieve
URL (0008,1190) C Shall be present if the Instance is retrievable by the Retrieve transaction
Patient's Name (0010,0010) R
Patient ID (0010,0020) R
Patient's Birth Date (0010,0030)R
Patient's Sex (0010,0040) R
Study Instance UID (0020,000D) U
Study ID (0020,0010) R
Number of Study Related Series (0020,1206) R
Number of Study Related Instances (0020,1208) R

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marcelvanherk · Jul 29th 2022

Yes, therefore you have to add them to the query in the code if they are not there. E.g. as follows

q=DicomObject:new()

q.StudyId="" -- add all mandatory items this way

q=q:Copy(jsonstring) -- overwrites existing empty elements

Marcel

jweste · Jul 29th 2022

Hi, Marcel,

I think the json response is not well formed. I am getting a parse error converting the response to JSON.

A sample response is:

[{"00020010": { "vr": "UI", "Value":["1.2.840.10008.1.2"]},"00080020": { "vr": "DA", "Value":["20170404"]},"00080030": { "vr": "TM", "Value":["145901.734000"]},"00080050": { "vr": "SH", "Value":"","00080052": { "vr": "CS", "Value":["STUDY"]},"00080061": { "vr": "CS", "Value":["CR"]},"00080090": { "vr": "PN", "Value":"","00100010": { "vr": "PN", "Value":["paciente008"]},"00100020": { "vr": "LO", "Value":["86542"]},"00100030": { "vr": "DA", "Value":["20170404"]},"0020000d": { "vr": "UI", "Value":["1.3.46.670589.30.1.6.1.116520970982.1491317778640.1"]},"00200010": { "vr": "SH", "Value":["S-J13O3MJ4.1"]}}]

There is one more curly bracket in '.....3MJ4.1"]}}]

In my API I get:

Code

[{"00020010": { "vr": "UI", "Value":["1.2.840.10008.1.2"]},"00080020": { "vr": "DA", "Value":["20170404"]},"00080030": { "vr": "TM", "Value":["145901.734000"]},"00080050": { "vr": "SH", "Value":"","00080052": { "vr": "CS", "Value":["STUDY"]},"00080061": { "vr": "CS", "Value":["CR"]},"00080090": { "vr": "PN", "Value":"","00100010": { "vr": "PN", "Value":["paciente008"]},"00100020": { "vr": "LO", "Value":["86542"]},"00100030": { "vr": "DA", "Value":["20170404"]},"0020000d": { "vr": "UI", "Value":["1.3.46.670589.30.1.6.1.116520970982.1491317778640.1"]},"00200010": { "vr": "SH", "Value":["S-J13O3MJ4.1"]}}]
SyntaxError: Unexpected token ] in JSON at position 608
at JSON.parse (<anonymous>)

marcelvanherk · Jul 29th 2022

Hi,

if you remove that curly brace is it then well formed? Just to check the rest.

Marcel

marcelvanherk · Jul 29th 2022

Nah, just checked. The issue is with empty VRs, these were not well formed.

This one should fix that:

dgate.zip

Marcel

jweste · Jul 29th 2022

Quote from marcelvanherk

Nah, just checked. The issue is with empty VRs, these were not well formed.

This one should fix that:

dgate.zip

Marcel

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Hi, Marcel,

It´s working now.

I already have some qidos, wadouri and wado-rs endpoints working

I have some questions, please:

1. How can adapt lua script to get only metadatas as specified in qido as:

Study Metadata

/studies/{study}/metadata

Series Metadata

/studies/{study}/series/{series}/metadata

Instance Metadata

/studies/{study}/series/{series}/instances/{instance}/metadata

Notes from docs:

The Metadata describes the corresponding Resource, not any Representation of it that might be separately retrieved, hence includes only the DICOM Dataset (without Bulkdata), and in particular does not include any Group 0002 File Meta Information Data Elements.

Some Attributes of the DICOM Dataset may depend on the Representation, not the Resource, especially those that describe the Pixel Data, so may differ from those encoded in a particular retrieved Representation. E.g., Photometric Interpretation (0028,0004) may differ depending on the Transfer Syntax.

Information related to Transfer Syntax UID (0002,0010) in the File Meta Information, which might be expected to be of interest for retrieval of the Representation of the Resource in a particular Media Type, may be available using the Available Transfer Syntax UID (0008,3002) in a Search Transaction.

2. And Bulkdata as:

Study Bulkdata

/studies/{study}/bulkdata

Series Bulkdata

/studies/{study}/series/{series}/bulkdata

Instance Bulkdata

/studies/{study}/series/{series}/instances/{instance}/bulkdata

Bulkdata

{bulkdataURI}

3. Is possible I add tags from json objects to query using the format '00231003' as showing below:

Code

/studies?00230010=AcmeCompany&00231001=001239&includefield=00231002&includefield=00231003

marcelvanherk · Jul 30th 2022

Hi,

to only get the metadata, read the object

x:Read(patientid..':'..sopistanceuid)

and then clear the pixel data

x.PixelData=nil

To query on number say:

q["00231001"]=""

or q[string]="", where you fill the string with eg 00231001

Marcel

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