Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | 3376x 3376x | import getTagValue from '../getTagValue';
import getValue from './getValue';
import isNMReconstructable from '../../isNMReconstructable';
import getNumberValues from './getNumberValues';
/**
* Checks if the modality is Nuclear Medicine (NM)
* @param metaData The metadata object containing DICOM tags
* @returns True if the modality includes 'NM', false otherwise
*/
function isNMModality(metaData) {
const modality = getValue(metaData['00080060']) as string;
return modality.includes('NM');
}
/**
* Get a subpart of Image Type dicom tag defined by index
* @param {*} metaData
* @param {*} index 0 based index of the subtype
*/
function getImageTypeSubItemFromMetadata(metaData, index) {
const imageType = getTagValue(metaData['00080008'], false);
if (imageType) {
// const subTypes = imageType.split('\\');
// if (subTypes.length > index) {
// return subTypes[index];
// }
return imageType[index];
}
return undefined;
}
/**
* Extracts the orientation from NM multiframe metadata, if image type
* equal to RECON TOMO or RECON GATED TOMO
* @param {*} metaData
* @returns
*/
function extractOrientationFromNMMultiframeMetadata(metaData) {
let imageOrientationPatient;
const imageSubType = getImageTypeSubItemFromMetadata(metaData, 2);
if (imageSubType && isNMReconstructable(imageSubType)) {
const detectorInformationSequence = getTagValue(metaData['00540022']);
if (detectorInformationSequence) {
imageOrientationPatient = getNumberValues(
detectorInformationSequence['00200037'],
6
);
}
}
return imageOrientationPatient;
}
/**
* Extracts the position from NM multiframe dataset, if image type
* equal to RECON TOMO or RECON GATED TOMO
* @param {*} metaData
* @returns
*/
function extractPositionFromNMMultiframeMetadata(metaData) {
let imagePositionPatient;
const imageSubType = getImageTypeSubItemFromMetadata(metaData, 2);
if (imageSubType && isNMReconstructable(imageSubType)) {
const detectorInformationSequence = getTagValue(metaData['00540022']);
if (detectorInformationSequence) {
imagePositionPatient = getNumberValues(
detectorInformationSequence['00200032'],
3
);
}
}
return imagePositionPatient;
}
export {
extractOrientationFromNMMultiframeMetadata,
extractPositionFromNMMultiframeMetadata,
isNMModality,
getImageTypeSubItemFromMetadata,
};
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