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Luca Michael Dulz
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,146 +1,147 @@ | ||
| import { data, dataSet } from "dcmjs"; | ||
| import { AddressAnonymizer } from "./addressanonymizer"; | ||
| import { DateTimeAnonymizer } from "./datetimeanonymizer"; | ||
| import { FixedValueAnonymizer } from "./fixedvalueanonymizer"; | ||
| import { IDAnonymizer } from "./idanonymizer"; | ||
| import { InstitutionAnonymizer } from "./institutionanonymizer"; | ||
| import { PNAnonymizer } from "./pnanonymizer"; | ||
| import { Protector } from "./protector"; | ||
| import { Randomizer } from "./randomizer"; | ||
| import { UIAnonymizer } from "./uianonymizer"; | ||
| import { UnwantedElementStripper } from "./unwantedelements"; | ||
|
|
||
| type ElementHandler = (dataset: dataSet, tag: string) => boolean; | ||
|
|
||
| export class Anonymizer { | ||
| /** | ||
| The main class responsible for anonymizing dcmjs datasets. | ||
| New instances will anonymize instances differently, so when | ||
| anonymizing instances from the same series, study, or patient, | ||
| reuse an Anonymizer. | ||
| */ | ||
|
|
||
| private patientID?: string; | ||
| private date_offset_hours: number; | ||
| randomizer: Randomizer; | ||
| address_anonymizer: AddressAnonymizer; | ||
| element_handlers: ElementHandler[]; | ||
|
|
||
| constructor( | ||
| patientID?: string, | ||
| protected_tags?: string[], | ||
| id_prefix?: string, | ||
| id_suffix?: string, | ||
| seed?: string | ||
| ) { | ||
| const minimum_offset_hours: number = 62 * 24; | ||
| const maximum_offset_hours: number = 730 * 24; | ||
| if (patientID) { | ||
| this.patientID = patientID; | ||
| } | ||
| this.randomizer = new Randomizer(seed); | ||
| this.date_offset_hours = Number( | ||
| -( | ||
| (this.randomizer.toInt("date_offset") % | ||
| (BigInt(maximum_offset_hours) - BigInt(minimum_offset_hours))) + | ||
| BigInt(minimum_offset_hours) | ||
| ) | ||
| ); | ||
| //this.data = data; | ||
| this.address_anonymizer = new AddressAnonymizer(this.randomizer); | ||
| this.element_handlers = [ | ||
| new Protector(protected_tags).protect, | ||
| new UnwantedElementStripper([ | ||
| "00101081", //"BranchOfService", | ||
| "00102180", //"Occupation", | ||
| "00101090", //"MedicalRecordLocator", | ||
| "00101080", //"MilitaryRank", | ||
| "00100050", //"PatientInsurancePlanCodeSequence", | ||
| "00102201", //"PatientReligiousPreference", | ||
| "00102155", //"PatientTelecomInformation", | ||
| "00102154", //"PatientTelephoneNumbers", | ||
| "00101100", //"ReferencedPatientPhotoSequence", | ||
| "00102299", //"ResponsibleOrganization" | ||
| ]).anonymize, | ||
| new UIAnonymizer(this.randomizer).anonymize, | ||
| new PNAnonymizer(this.randomizer).anonymize, | ||
| new IDAnonymizer( | ||
| this.randomizer, | ||
| [ | ||
| "00080050", //"AccessionNumber", | ||
| "00101000", //"OtherPatientIDs", | ||
| "00402017", //"FillerOrderNumberImagingServiceRequest", | ||
| //"FillerOrderNumberImagingServiceRequestRetired", Retired | ||
| //"FillerOrderNumberProcedure", Retired | ||
| "00100020", //"PatientID", | ||
| "00400253", //"PerformedProcedureStepID", | ||
| "00402016", //"PlacerOrderNumberImagingServiceRequest", | ||
| //"PlacerOrderNumberImagingServiceRequestRetired",Retired | ||
| // "PlacerOrderNumberProcedure", Retired | ||
| "00401001", //"RequestedProcedureID", | ||
| "00400009", //"ScheduledProcedureStepID", | ||
| "00081010", //"StationName", | ||
| "00200010", //"StudyID" | ||
| ], | ||
| id_prefix, | ||
| id_suffix | ||
| ).anonymize, | ||
| this.address_anonymizer.anonymize, | ||
| new InstitutionAnonymizer(this.address_anonymizer).anonymize, | ||
|
|
||
| new DateTimeAnonymizer(this.date_offset_hours).anonymize, | ||
| ]; | ||
| if (patientID) { | ||
| this.element_handlers.push(new FixedValueAnonymizer("00100020", patientID).anonymize); | ||
| } | ||
| } | ||
|
|
||
| anonymize(data: data.DicomDict) { | ||
| this.walk(data.meta, this.element_handlers); | ||
| this.walk(data.dict, this.element_handlers); | ||
| } | ||
|
|
||
| walk(dataset: dataSet, handler: ElementHandler[]) { | ||
| const tagList = Object.keys(dataset); | ||
| for (const tag of tagList) { | ||
| const element = dataset[tag]; | ||
|
|
||
| if (this.del_private_tags(dataset, tag)) { | ||
| continue; | ||
| } | ||
|
|
||
| this.anonymize_element(dataset, tag, handler); | ||
|
|
||
| // If the element is a sequence, recursively walk through its items | ||
| if (tag in dataset && element.vr === "SQ") { | ||
| for (let i = 0; i < element.Value.length; i++) { | ||
| const sequence = element.Value; | ||
| for (const item of sequence) { | ||
| this.walk(item, handler); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| anonymize_element(dataset: dataSet, tag: string, handler: ElementHandler[]) { | ||
| // Perform operations on the element | ||
| for (const callback of handler) { | ||
| if (callback(dataset, tag)) { | ||
| return; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| del_private_tags(dataset: dataSet, data_tag: string): boolean { | ||
| const currTag = data.Tag.fromString(data_tag); | ||
| if (currTag.group() % 2 === 1) { | ||
| delete dataset[data_tag]; | ||
| return true; | ||
| } else { | ||
| return false; | ||
| } | ||
| //return true | ||
| } | ||
| } | ||
| import { data, dataSet } from "dcmjs"; | ||
| import { AddressAnonymizer } from "./addressanonymizer"; | ||
| import { DateTimeAnonymizer } from "./datetimeanonymizer"; | ||
| import { FixedValueAnonymizer } from "./fixedvalueanonymizer"; | ||
| import { IDAnonymizer } from "./idanonymizer"; | ||
| import { InstitutionAnonymizer } from "./institutionanonymizer"; | ||
| import { PNAnonymizer } from "./pnanonymizer"; | ||
| import { Protector } from "./protector"; | ||
| import { Randomizer } from "./randomizer"; | ||
| import { UIAnonymizer } from "./uianonymizer"; | ||
| import { UnwantedElementStripper } from "./unwantedelements"; | ||
|
|
||
| type ElementHandler = (dataset: dataSet, tag: string) => boolean; | ||
|
|
||
| export class Anonymizer { | ||
| /** | ||
| The main class responsible for anonymizing dcmjs datasets. | ||
| New instances will anonymize instances differently, so when | ||
| anonymizing instances from the same series, study, or patient, | ||
| reuse an Anonymizer. | ||
| */ | ||
|
|
||
| private patientID?: string; | ||
| private date_offset_hours: number; | ||
| randomizer: Randomizer; | ||
| address_anonymizer: AddressAnonymizer; | ||
| element_handlers: ElementHandler[]; | ||
|
|
||
| constructor( | ||
| patientID?: string, | ||
| protected_tags?: string[], | ||
| id_prefix?: string, | ||
| id_suffix?: string, | ||
| seed?: string | ||
| ) { | ||
| const minimum_offset_hours: number = 62 * 24; | ||
| const maximum_offset_hours: number = 730 * 24; | ||
| if (patientID) { | ||
| this.patientID = patientID; | ||
| } | ||
| this.randomizer = new Randomizer(seed); | ||
| this.date_offset_hours = Number( | ||
| -( | ||
| (this.randomizer.toInt("date_offset") % | ||
| (BigInt(maximum_offset_hours) - BigInt(minimum_offset_hours))) + | ||
| BigInt(minimum_offset_hours) | ||
| ) | ||
| ); | ||
| //this.data = data; | ||
| this.address_anonymizer = new AddressAnonymizer(this.randomizer); | ||
| this.element_handlers = [ | ||
| new Protector(protected_tags).protect, | ||
| new UnwantedElementStripper([ | ||
| "00101081", //"BranchOfService", | ||
| "00102180", //"Occupation", | ||
| "00101090", //"MedicalRecordLocator", | ||
| "00101080", //"MilitaryRank", | ||
| "00100050", //"PatientInsurancePlanCodeSequence", | ||
| "00102201", //"PatientReligiousPreference", | ||
| "00102155", //"PatientTelecomInformation", | ||
| "00102154", //"PatientTelephoneNumbers", | ||
| "00101100", //"ReferencedPatientPhotoSequence", | ||
| "00102299", //"ResponsibleOrganization" | ||
| ]).anonymize, | ||
| new UIAnonymizer(this.randomizer).anonymize, | ||
| new PNAnonymizer(this.randomizer).anonymize, | ||
| new IDAnonymizer( | ||
| this.randomizer, | ||
| [ | ||
| "00080050", //"AccessionNumber", | ||
| "00101000", //"OtherPatientIDs", | ||
| "00402017", //"FillerOrderNumberImagingServiceRequest", | ||
| //"FillerOrderNumberImagingServiceRequestRetired", Retired | ||
| //"FillerOrderNumberProcedure", Retired | ||
| "00100020", //"PatientID", | ||
| "00400253", //"PerformedProcedureStepID", | ||
| "00402016", //"PlacerOrderNumberImagingServiceRequest", | ||
| //"PlacerOrderNumberImagingServiceRequestRetired",Retired | ||
| // "PlacerOrderNumberProcedure", Retired | ||
| "00401001", //"RequestedProcedureID", | ||
| "00400009", //"ScheduledProcedureStepID", | ||
| "00081010", //"StationName", | ||
| "00200010", //"StudyID" | ||
| ], | ||
| id_prefix, | ||
| id_suffix | ||
| ).anonymize, | ||
| this.address_anonymizer.anonymize, | ||
| new InstitutionAnonymizer(this.address_anonymizer).anonymize, | ||
| new FixedValueAnonymizer("00321033", "").anonymize, // RequestingService | ||
| new FixedValueAnonymizer("00380300", "").anonymize, // CurrentPatientLocation | ||
| new DateTimeAnonymizer(this.date_offset_hours).anonymize, | ||
| ]; | ||
| if (patientID) { | ||
| this.element_handlers.push(new FixedValueAnonymizer("00100020", patientID).anonymize); | ||
| } | ||
| } | ||
|
|
||
| anonymize(data: data.DicomDict) { | ||
| this.walk(data.meta, this.element_handlers); | ||
| this.walk(data.dict, this.element_handlers); | ||
| } | ||
|
|
||
| walk(dataset: dataSet, handler: ElementHandler[]) { | ||
| const tagList = Object.keys(dataset); | ||
| for (const tag of tagList) { | ||
| const element = dataset[tag]; | ||
|
|
||
| if (this.del_private_tags(dataset, tag)) { | ||
| continue; | ||
| } | ||
|
|
||
| this.anonymize_element(dataset, tag, handler); | ||
|
|
||
| // If the element is a sequence, recursively walk through its items | ||
| if (tag in dataset && element.vr === "SQ") { | ||
| for (let i = 0; i < element.Value.length; i++) { | ||
| const sequence = element.Value; | ||
| for (const item of sequence) { | ||
| this.walk(item, handler); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| anonymize_element(dataset: dataSet, tag: string, handler: ElementHandler[]) { | ||
| // Perform operations on the element | ||
| for (const callback of handler) { | ||
| if (callback(dataset, tag)) { | ||
| return; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| del_private_tags(dataset: dataSet, data_tag: string): boolean { | ||
| const currTag = data.Tag.fromString(data_tag); | ||
| if (currTag.group() % 2 === 1) { | ||
| delete dataset[data_tag]; | ||
| return true; | ||
| } else { | ||
| return false; | ||
| } | ||
| //return true | ||
| } | ||
| } |
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