# Available Keys and Operators in Viewer

In Viewer (/viewer/#/viewer), the following keys can be used as search criteria.
Also, if you use more than one parameter, please insert "&" between each parameter.

Item Key Example
Study Instance UID studyinstanceuid studyinstanceuid=1.2.392.200224.2.3000.8001
Series Instance UID seriesinstanceuid seriesinstanceuid=1.2.392.200224.3.3000.8002
SOP Instance UID sopinstanceuid sopinstanceuid=1.2.392.200224.3.3000.8003
Patient ID patientid patientid=12345
Accession Number accessionnumber accessionnumber=20180123001

In Viewer (/viewer/#/viewer), you can use the following operators.

Item Operator
Equal = or ===