PACS DICOMweb Conformance Statement

Introduction

The system supports a subset of the DICOMweb services specified in the https://dicom.nema.org/medical/dicom/current/output/html/part18.html (commonly referred to as DICOMweb). Specifically, it supports STOW-RS, QIDO-RS and WADO-URI

Authorization

Every HTTP request to any of the following web service must be authenticated through a valid API Key. An API Key is a string that must be included in every request inside the “Authorization” header:

CODE

Authorization: {API Key}

The system will reject any request that does not contain the Authorization header or contains a wrong API Key value. The returned response status in these cases will be HTTP 401 (Unauthorized).

Store Transaction (STOW-RS) as Origin Server

The Store Transaction is a RESTful web service for storing DICOM imaging data. This transaction uses the POST method to store representations of studies, series, and instances contained in the request payload.

The system accepts only DICOM Part 10 binary files sent directly. It does not accept the splitting of DICOM information into metadata and bulk data sent separately.

The transaction support only multipart HTTP requests containing a single DICOM instance.

URL	`/o3-dpacs-wado/stowRsListener/{CALLING_AET}/studies/{STUDY_UID}` `/o3-dpacs-wado/stowRsListener/{CALLING_AET}/studies`
Method	POST
Content-Type	`multipart/related; type="application/dicom"`
Header parameters	`Authorization`	API Key	Required
Response codes	200 - OK 400 - Bad Request: The request does not meet the service requirements 409 - Conflict: The instance cannot be stored

Search Transaction (QIDO-RS) as Origin Server

Query based on ID for DICOM Objects (QIDO) enables you to search for studies, series, and instances by attributes.

URL	Patient-Level query: `/o3-dpacs-wado/qido/{AET}/patients?...` Study-Level query: `/o3-dpacs-wado/qido/{AET}/studies?...` Series-Level query: `/o3-dpacs-wado/qido/{AET}/series?...` `/o3-dpacs-wado/qido/{AET}/studies/{STUDY}/series?...` Image-Level query: `/o3-dpacs-wado/qido/{AET}/instances?...` `/o3-dpacs-wado/qido/{AET}/studies/{STUDY}/instances?...` `/o3-dpacs-wado/qido/{AET}/studies/{STUDY}/series/{SERIES}/instances?...`
Method	GET
Header parameters	`Authorization`	API Key	Required
Query parameters	`{attributeID}={value}`	Search for attribute/value matching in query
	`includefield={attributeID}`	Other attributes to return in the response

Retrieve Transaction (WADO-RS) as Origin Server

Retrieve DICOM instances through RESTful service, wrapped in a multipart/related response. It is possible to filter by study, series or instance.

The only supported Accept header is multipart/related; type=application/dicom;. No transfer syntax change is supported. Therefore all instances will be served with their original encoding.

URL	Study-Level query: `/o3-dpacs-wado/rs/studies/{studyUID}` Series-Level query: `/o3-dpacs-wado/rs/studies/{studyUID}/series/{seriesUID}` Image-Level query: `/o3-dpacs-wado/rs/studies/{studyUID}/series/{seriesUID}/instances/{sopUID}`
Method	GET
Header parameters	`Authorization`	API Key	Required
Query parameters	`anonymize`	true false (default)	Optional
Response codes	200 - OK 400 - Bad Request: Invalid request 404 - Not Found: No result 406 - Not Acceptable: Accept header not supported 500- Internal Server Error: Unexpected error

WADO-URI (Web Access to DICOM Objects)

Retrieve representations of instances using HTTP. The returned contents are “Part 10 File” objects.

URL	`/o3-dpacs-wado/wado?...`
Method	GET
Header parameters	`Authorization`	API Key	Required
Query parameters	`requestType`	“WADO”	Required
	`studyUID`	Study Instance UID	Required
	`seriesUID`	Series Instance UID	Required
	`objectUID`	SOP Instance UID	Required
	`contentType`	“application/dicom” ”image/jpeg”	Optional
	`anonymize`	“yes” ”no”	Optional
	`rows` `columns` `windowCenter` `windowWidth` `frameNumber`	Only for jpeg	Optional
	`transferSyntax`	The transfer syntax of the returned dicom file. Supported syntaxes are: Explicit VR Little Endian Implicit VR Little Endian JPEG Baseline JPEG Lossless JPEG 2000 Lossless “original” - returns the file without changes	Optional