> ## Documentation Index > Fetch the complete documentation index at: https://docs.metriport.com/llms.txt > Use this file to discover all available pages before exploring further. # ImagingStudy > Representation of the content produced in a DICOM imaging study. A study comprises a set of series, each of which includes a set of Service-Object Pair Instances (SOP Instances - images or other data) acquired or produced in a common context. A series is of only one modality (e.g. X-ray, CT, MR, ultrasound), but a study may have multiple series of different modalities. ## Properties | Name | Required | Type | Description | | ------------------- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | --------------------------------------------------------------- | | identifier | No | [Identifier](/medical-api/fhir/data-types/identifier)\[] | Identifiers for the whole study | | status | Yes | code | registered / available / cancelled / entered-in-error / unknown | | modality | No | [Coding](/medical-api/fhir/data-types/coding)\[] | All series modality if actual acquisition modalities | | subject | Yes | Reference\<[Patient](/medical-api/fhir/resources/patient) / [Device](/medical-api/fhir/resources/device) / [Group](/medical-api/fhir/resources/group)> | Who or what is the subject of the study | | encounter | No | Reference\<[Encounter](/medical-api/fhir/resources/encounter)> | Encounter with which this imaging study is associated | | started | No | dateTime | When the study was started | | basedOn | No | Reference\<[CarePlan](/medical-api/fhir/resources/careplan) / [ServiceRequest](/medical-api/fhir/resources/servicerequest) / [Appointment](/medical-api/fhir/resources/appointment) / [AppointmentResponse](/medical-api/fhir/resources/appointmentresponse) / [Task](/medical-api/fhir/resources/task)>\[] | Request fulfilled | | referrer | No | Reference\<[Practitioner](/medical-api/fhir/resources/practitioner) / [PractitionerRole](/medical-api/fhir/resources/practitionerrole)> | Referring physician | | interpreter | No | Reference\<[Practitioner](/medical-api/fhir/resources/practitioner) / [PractitionerRole](/medical-api/fhir/resources/practitionerrole)>\[] | Who interpreted images | | endpoint | No | Reference\<[Endpoint](/medical-api/fhir/resources/endpoint)>\[] | Study access endpoint | | numberOfSeries | No | unsignedInt | Number of Study Related Series | | numberOfInstances | No | unsignedInt | Number of Study Related Instances | | procedureReference | No | Reference\<[Procedure](/medical-api/fhir/resources/procedure)> | The performed Procedure reference | | procedureCode | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | The performed procedure code | | location | No | Reference\<[Location](/medical-api/fhir/resources/location)> | Where ImagingStudy occurred | | reasonCode | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Why the study was requested | | reasonReference | No | Reference\<[Condition](/medical-api/fhir/resources/condition) / [Observation](/medical-api/fhir/resources/observation) / [Media](/medical-api/fhir/resources/media) / [DiagnosticReport](/medical-api/fhir/resources/diagnosticreport) / [DocumentReference](/medical-api/fhir/resources/documentreference)>\[] | Why was study performed | | note | No | [Annotation](/medical-api/fhir/data-types/annotation)\[] | User-defined comments | | description | No | string | Institution-generated description | | series | No | ImagingStudySeries | Each study has one or more series of instances | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - uid | Yes | id | DICOM Series Instance UID for the series | | - number | No | unsignedInt | Numeric identifier of this series | | - modality | Yes | [Coding](/medical-api/fhir/data-types/coding) | The modality of the instances in the series | | - description | No | string | A short human readable summary of the series | | - numberOfInstances | No | unsignedInt | Number of Series Related Instances | | - endpoint | No | Reference\<[Endpoint](/medical-api/fhir/resources/endpoint)>\[] | Series access endpoint | | - bodySite | No | [Coding](/medical-api/fhir/data-types/coding) | Body part examined | | - laterality | No | [Coding](/medical-api/fhir/data-types/coding) | Body part laterality | | - specimen | No | Reference\<[Specimen](/medical-api/fhir/resources/specimen)>\[] | Specimen imaged | | - started | No | dateTime | When the series started | | - performer | No | ImagingStudySeriesPerformer | Who performed the series | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - function | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Type of performance | | - actor | Yes | Reference\<[Practitioner](/medical-api/fhir/resources/practitioner) / [PractitionerRole](/medical-api/fhir/resources/practitionerrole) / [Organization](/medical-api/fhir/resources/organization) / [CareTeam](/medical-api/fhir/resources/careteam) / [Patient](/medical-api/fhir/resources/patient) / [Device](/medical-api/fhir/resources/device) / [RelatedPerson](/medical-api/fhir/resources/relatedperson)> | Who performed the series | | - instance | No | ImagingStudySeriesInstance | A single SOP instance from the series | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - uid | Yes | id | DICOM SOP Instance UID | | - sopClass | Yes | [Coding](/medical-api/fhir/data-types/coding) | DICOM class type | | - number | No | unsignedInt | The number of this instance in the series | | - title | No | string | Description of instance | ## Search Parameters | Name | Type | Description | Expression | | ----------- | --------- | -------------------------------------------------------------------------------- | ------------------------------------- | | identifier | token | Identifiers for the Study, such as DICOM Study Instance UID and Accession number | ImagingStudy.identifier | | patient | reference | Who the study is about | ImagingStudy.subject | | basedon | reference | The order for the image | ImagingStudy.basedOn | | bodysite | token | The body site studied | ImagingStudy.series.bodySite | | dicom-class | token | The type of the instance | ImagingStudy.series.instance.sopClass | | encounter | reference | The context of the study | ImagingStudy.encounter | | endpoint | reference | The endpoint for the study or series | ImagingStudy.endpoint | | instance | token | SOP Instance UID for an instance | ImagingStudy.series.instance.uid | | interpreter | reference | Who interpreted the images | ImagingStudy.interpreter | | modality | token | The modality of the series | ImagingStudy.series.modality | | performer | reference | The person who performed the study | ImagingStudy.series.performer.actor | | reason | token | The reason for the study | ImagingStudy.reasonCode | | referrer | reference | The referring physician | ImagingStudy.referrer | | series | token | DICOM Series Instance UID for a series | ImagingStudy.series.uid | | started | date | When the study was started | ImagingStudy.started | | status | token | The status of the study | ImagingStudy.status | | subject | reference | Who the study is about | ImagingStudy.subject | ## Inherited Properties | Name | Required | Type | Description | | ----------------- | -------- | ------------------------------------------------------ | ------------------------------------------------------ | | id | No | string | Logical id of this artifact | | meta | No | [Meta](/medical-api/fhir/data-types/meta) | Metadata about the resource | | implicitRules | No | uri | A set of rules under which this content was created | | language | No | code | Language of the resource content | | text | No | [Narrative](/medical-api/fhir/data-types/narrative) | Text summary of the resource, for human interpretation | | contained | No | Resource\[] | Contained, inline Resources | | extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored | To view the FHIR specification for this resource, see [ImagingStudy](https://www.hl7.org/fhir/StructureDefinition/ImagingStudy).