init

extensions/default/src/getPTImageIdInstanceMetadata.ts

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+import OHIF from '@ohif/core';
+
+import { InstanceMetadata, PhilipsPETPrivateGroup } from '@cornerstonejs/calculate-suv/src/types';
+
+const metadataProvider = OHIF.classes.MetadataProvider;
+
+export default function getPTImageIdInstanceMetadata(imageId: string): InstanceMetadata {
+  const dicomMetaData = metadataProvider.get('instance', imageId);
+
+  if (!dicomMetaData) {
+    throw new Error('dicom metadata are required');
+  }
+
+  if (
+    dicomMetaData.SeriesDate === undefined ||
+    dicomMetaData.SeriesTime === undefined ||
+    dicomMetaData.CorrectedImage === undefined ||
+    dicomMetaData.Units === undefined ||
+    !dicomMetaData.RadiopharmaceuticalInformationSequence ||
+    dicomMetaData.RadiopharmaceuticalInformationSequence.RadionuclideHalfLife === undefined ||
+    dicomMetaData.RadiopharmaceuticalInformationSequence.RadionuclideTotalDose === undefined ||
+    dicomMetaData.DecayCorrection === undefined ||
+    dicomMetaData.AcquisitionDate === undefined ||
+    dicomMetaData.AcquisitionTime === undefined ||
+    (dicomMetaData.RadiopharmaceuticalInformationSequence.RadiopharmaceuticalStartDateTime ===
+      undefined &&
+      dicomMetaData.RadiopharmaceuticalInformationSequence.RadiopharmaceuticalStartTime ===
+        undefined)
+  ) {
+    throw new Error('required metadata are missing');
+  }
+
+  if (dicomMetaData.PatientWeight === undefined) {
+    console.warn('PatientWeight missing from PT instance metadata');
+  }
+
+  const instanceMetadata: InstanceMetadata = {
+    CorrectedImage: dicomMetaData.CorrectedImage,
+    Units: dicomMetaData.Units,
+    RadionuclideHalfLife: dicomMetaData.RadiopharmaceuticalInformationSequence.RadionuclideHalfLife,
+    RadionuclideTotalDose:
+      dicomMetaData.RadiopharmaceuticalInformationSequence.RadionuclideTotalDose,
+    RadiopharmaceuticalStartDateTime:
+      dicomMetaData.RadiopharmaceuticalInformationSequence.RadiopharmaceuticalStartDateTime,
+    RadiopharmaceuticalStartTime:
+      dicomMetaData.RadiopharmaceuticalInformationSequence.RadiopharmaceuticalStartTime,
+    DecayCorrection: dicomMetaData.DecayCorrection,
+    PatientWeight: dicomMetaData.PatientWeight,
+    SeriesDate: dicomMetaData.SeriesDate,
+    SeriesTime: dicomMetaData.SeriesTime,
+    AcquisitionDate: dicomMetaData.AcquisitionDate,
+    AcquisitionTime: dicomMetaData.AcquisitionTime,
+  };
+
+  if (
+    dicomMetaData['70531000'] ||
+    dicomMetaData['70531000'] !== undefined ||
+    dicomMetaData['70531009'] ||
+    dicomMetaData['70531009'] !== undefined
+  ) {
+    const philipsPETPrivateGroup: PhilipsPETPrivateGroup = {
+      SUVScaleFactor: dicomMetaData['70531000'],
+      ActivityConcentrationScaleFactor: dicomMetaData['70531009'],
+    };
+    instanceMetadata.PhilipsPETPrivateGroup = philipsPETPrivateGroup;
+  }
+
+  if (dicomMetaData['0009100d'] && dicomMetaData['0009100d'] !== undefined) {
+    instanceMetadata.GEPrivatePostInjectionDateTime = dicomMetaData['0009100d'];
+  }
+
+  if (dicomMetaData.FrameReferenceTime && dicomMetaData.FrameReferenceTime !== undefined) {
+    instanceMetadata.FrameReferenceTime = dicomMetaData.FrameReferenceTime;
+  }
+
+  if (dicomMetaData.ActualFrameDuration && dicomMetaData.ActualFrameDuration !== undefined) {
+    instanceMetadata.ActualFrameDuration = dicomMetaData.ActualFrameDuration;
+  }
+
+  if (dicomMetaData.PatientSex && dicomMetaData.PatientSex !== undefined) {
+    instanceMetadata.PatientSex = dicomMetaData.PatientSex;
+  }
+
+  if (dicomMetaData.PatientSize && dicomMetaData.PatientSize !== undefined) {
+    instanceMetadata.PatientSize = dicomMetaData.PatientSize;
+  }
+
+  return instanceMetadata;
+}
+
+function convertInterfaceTimeToString(time): string {
+  const hours = `${time.hours || '00'}`.padStart(2, '0');
+  const minutes = `${time.minutes || '00'}`.padStart(2, '0');
+  const seconds = `${time.seconds || '00'}`.padStart(2, '0');
+
+  const fractionalSeconds = `${time.fractionalSeconds || '000000'}`.padEnd(6, '0');
+
+  const timeString = `${hours}${minutes}${seconds}.${fractionalSeconds}`;
+  return timeString;
+}
+
+function convertInterfaceDateToString(date): string {
+  const month = `${date.month}`.padStart(2, '0');
+  const day = `${date.day}`.padStart(2, '0');
+  const dateString = `${date.year}${month}${day}`;
+  return dateString;
+}
+
+export { getPTImageIdInstanceMetadata };