ImageIds

A cornerstone ImageId is a URL which identifies a single image for cornerstone to display. The URL scheme in the ImageId is used by cornerstone to determine which ImageLoader plugin to call to actually load the image. This strategy allows cornerstone to simultaneously display multiple images obtained with different protocols from different servers. For example, cornerstone could display a DICOM CT image obtained via WADO along side a JPEG dermatology image captured by a digital camera and stored on a file system.

Cornerstone does not specify what the contents of the URL are - it is up to the ImageLoader to define the contents of the URL so it can locate the image. For example, a proprietary ImageLoader plugin could be written to talk to a proprietary server and lookup images using a GUID, filename or database row id.

Here are some examples of what an imageId would look like for different ImageLoader plugins:

WADO

http://www.medical-webservice.st/RetrieveDocument?
requestType=WADO&studyUID=1.2.250.1.59.40211.12345678.678910
&seriesUID=1.2.250.1.59.40211.789001276.14556172.67789
&objectUID=1.2.250.1.59.40211.2678810.87991027.899772.2
&contentType=application%2Fdicom&transferSyntax=1.2.840.10008.1.2.4.50

DICOM CGET

A 'dicomcget' image loader could work with a server to issue a DICOM CGET command to retrieve the image and then return it to cornerstone:

dicomcget://www.medical-webservice.st/RetrieveDocument?
requestType=WADO&studyUID=1.2.250.1.59.40211.12345678.678910
&seriesUID=1.2.250.1.59.40211.789001276.14556172.67789
&objectUID=1.2.250.1.59.40211.2678810.87991027.899772.2
&contentType=application%2Fdicom&transferSyntax=1.2.840.10008.1.2.4.50

DICOM CMOVE

A 'dicomcmove' image loader could work with a server to issue a DICOM CMOVE command to retrieve the image and then return it to cornerstone:

dicomcmove://www.medical-webservice.st/RetrieveDocument?
requestType=WADO&studyUID=1.2.250.1.59.40211.12345678.678910
&seriesUID=1.2.250.1.59.40211.789001276.14556172.67789
&objectUID=1.2.250.1.59.40211.2678810.87991027.899772.2
&contentType=application%2Fdicom&transferSyntax=1.2.840.10008.1.2.4.50

Proprietary GUID based

An image loader could take a GUID and request that a server look it up in the database to find the path to the image on disk and then return the pixel data to cornerstone:

custom1://server?imageId=38120cae-bdcd-4102-b799-c8b9965d3421

Proprietary database rowid based

An image loader could take a row id and request that a server look it up in the database to find the path to the image on disk and then return the pixel data to cornerstone:

custom2://server/1353056

Proprietary file based

An image loader could take a file path and request that a server return the pixel data for it to cornerstone:

custom3://server/dermataologyImages/room10/12345.jpg