js-dicom/src/ImageUtility/metaData/metaDataProvider.js

this is js-dicom

import getNumberValues from './getNumberValues';
import getImagePixelModule from './getImagePixelModule';
import getLUTs from './getLUTs';
import getModalityLUTOutputPixelRepresentation from './getModalityLUTOutputPixelRepresentation';
// import * as dicomParser from 'dicom-parser';
import *  as dicomParser  from '../../dicomParser/index';

function metaDataProvider (type, dataSet) {
    //const parsedImageId = parseImageId(imageId);

    //const dataSet = dataSetCacheManager.get(parsedImageId.url);

    if (!dataSet) {
        return;
    }

    if (type === 'generalSeriesModule') {
        return {
            modality: dataSet.string('x00080060'),
            seriesInstanceUID: dataSet.string('x0020000e'),
            seriesNumber: dataSet.intString('x00200011'),
            studyInstanceUID: dataSet.string('x0020000d'),
            seriesDate: dicomParser.parseDA(dataSet.string('x00080021')),
            seriesTime: dicomParser.parseTM(dataSet.string('x00080031') || '')
        };
    }

    if (type === 'patientStudyModule') {
        return {
            patientAge: dataSet.intString('x00101010'),
            patientSize: dataSet.floatString('x00101020'),
            patientWeight: dataSet.floatString('x00101030')
        };
    }

    if (type === 'imagePlaneModule') {
        return {
            pixelSpacing: getNumberValues(dataSet, 'x00280030', 2),
            imageOrientationPatient: getNumberValues(dataSet, 'x00200037', 6),
            imagePositionPatient: getNumberValues(dataSet, 'x00200032', 3),
            sliceThickness: dataSet.floatString('x00180050'),
            sliceLocation: dataSet.floatString('x00201041'),
            frameOfReferenceUID: dataSet.string('x00200052')
        };
    }

    if (type === 'imagePixelModule') {
        return getImagePixelModule(dataSet);
    }

    if (type === 'modalityLutModule') {
        return {
            rescaleIntercept: dataSet.floatString('x00281052'),
            rescaleSlope: dataSet.floatString('x00281053'),
            rescaleType: dataSet.string('x00281054'),
            modalityLUTSequence: getLUTs(dataSet.uint16('x00280103'), dataSet.elements.x00283000)
        };
    }

    if (type === 'voiLutModule') {
        const modalityLUTOutputPixelRepresentation = getModalityLUTOutputPixelRepresentation(dataSet);


        return {
            windowCenter: getNumberValues(dataSet, 'x00281050', 1),
            windowWidth: getNumberValues(dataSet, 'x00281051', 1),
            voiLUTSequence: getLUTs(modalityLUTOutputPixelRepresentation, dataSet.elements.x00283010)
        };
    }

    if (type === 'sopCommonModule') {
        return {
            sopClassUID: dataSet.string('x00080016'),
            sopInstanceUID: dataSet.string('x00080018')
        };
    }

    if (type === 'petIsotopeModule') {
        const radiopharmaceuticalInfo = dataSet.elements.x00540016;

        if (radiopharmaceuticalInfo === undefined) {
            return;
        }

        const firstRadiopharmaceuticalInfoDataSet = radiopharmaceuticalInfo.items[0].dataSet;


        return {
            radiopharmaceuticalInfo: {
                radiopharmaceuticalStartTime: dicomParser.parseTM(firstRadiopharmaceuticalInfoDataSet.string('x00181072') || ''),
                radionuclideTotalDose: firstRadiopharmaceuticalInfoDataSet.floatString('x00181074'),
                radionuclideHalfLife: firstRadiopharmaceuticalInfoDataSet.floatString('x00181075')
            }
        };
    }

}


export default metaDataProvider;