cornerstone-wado-image-loader

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>imageLoader/wadouri/metaData/extractPositioningFromDataset.js - Documentation</title> <script src="scripts/prettify/prettify.js"></script> <script src="scripts/prettify/lang-css.js"></script>  <link type="text/css" rel="stylesheet" href="styles/prettify.css"> <link type="text/css" rel="stylesheet" href="styles/jsdoc.css"> <script src="scripts/nav.js" defer></script> <meta name="viewport" content="width=device-width, initial-scale=1.0"> </head> <body> <input type="checkbox" id="nav-trigger" class="nav-trigger" /> <label for="nav-trigger" class="navicon-button x"> <div class="navicon"></div> </label> <label for="nav-trigger" class="overlay"></label> <nav > <h2><a href="index.html">Home</a></h2><h3>Global</h3><ul><li><a href="global.html#addTask">addTask</a></li><li><a href="global.html#arrayBufferToString">arrayBufferToString</a></li><li><a href="global.html#cacheSizeInBytes">cacheSizeInBytes</a></li><li><a href="global.html#cancelTask">cancelTask</a></li><li><a href="global.html#decodeAsync">decodeAsync</a></li><li><a href="global.html#decodeImageFrame">decodeImageFrame</a></li><li><a href="global.html#extractOrientationFromDataset">extractOrientationFromDataset</a></li><li><a href="global.html#extractOrientationFromMetadata">extractOrientationFromMetadata</a></li><li><a href="global.html#extractOrientationFromNMMultiframeDataset">extractOrientationFromNMMultiframeDataset</a></li><li><a href="global.html#extractOrientationFromNMMultiframeMetadata">extractOrientationFromNMMultiframeMetadata</a></li><li><a href="global.html#extractPositionFromDataset">extractPositionFromDataset</a></li><li><a href="global.html#extractPositionFromMetadata">extractPositionFromMetadata</a></li><li><a href="global.html#extractPositionFromNMMultiframeDataset">extractPositionFromNMMultiframeDataset</a></li><li><a href="global.html#extractPositionFromNMMultiframeMetadata">extractPositionFromNMMultiframeMetadata</a></li><li><a href="global.html#extractSliceThicknessFromDataset">extractSliceThicknessFromDataset</a></li><li><a href="global.html#extractSpacingFromDataset">extractSpacingFromDataset</a></li><li><a href="global.html#framesAreFragmented">framesAreFragmented</a></li><li><a href="global.html#getImageTypeSubItemFromDataset">getImageTypeSubItemFromDataset</a></li><li><a href="global.html#getImageTypeSubItemFromMetadata">getImageTypeSubItemFromMetadata</a></li><li><a href="global.html#getMinMax">getMinMax</a></li><li><a href="global.html#getNumberString">getNumberString</a></li><li><a href="global.html#getNumberValues">getNumberValues</a></li><li><a href="global.html#getStatistics">getStatistics</a></li><li><a href="global.html#getTransferSyntaxForContentType">getTransferSyntaxForContentType</a></li><li><a href="global.html#getUncompressedImageFrame">getUncompressedImageFrame</a></li><li><a href="global.html#getValue">getValue</a></li><li><a href="global.html#handleMessageFromWorker">handleMessageFromWorker</a></li><li><a href="global.html#handler">handler</a></li><li><a href="global.html#initialize">initialize</a></li><li><a href="global.html#loadCodecs">loadCodecs</a></li><li><a href="global.html#loadWebWorkerTask">loadWebWorkerTask</a></li><li><a href="global.html#registerLoaders">registerLoaders</a></li><li><a href="global.html#registerTaskHandler">registerTaskHandler</a></li><li><a href="global.html#removeAFromRGBA">removeAFromRGBA</a></li><li><a href="global.html#setPixelDataType">setPixelDataType</a></li><li><a href="global.html#setTaskPriority">setTaskPriority</a></li><li><a href="global.html#spawnWebWorker">spawnWebWorker</a></li><li><a href="global.html#startTaskOnWebWorker">startTaskOnWebWorker</a></li><li><a href="global.html#terminate">terminate</a></li><li><a href="global.html#unpackBinaryFrame">unpackBinaryFrame</a></li></ul> </nav> <div id="main"> <h1 class="page-title">imageLoader/wadouri/metaData/extractPositioningFromDataset.js</h1> <section> <article> <pre class="prettyprint source linenums"><code>import getNumberValues from './getNumberValues.js'; import isNMReconstructable from '../../isNMReconstructable.js'; /** * Get a subpart of Image Type dicom tag defined by index * @param {*} dataSet * @param {*} index 0 based index of the subtype */ function getImageTypeSubItemFromDataset(dataSet, index) { const imageType = dataSet.string('x00080008'); if (imageType) { const subTypes = imageType.split('\\'); if (subTypes.length > index) { return subTypes[index]; } } return undefined; } /** * Extracts the orientation from NM multiframe dataset, if image type * equal to RECON TOMO or RECON GATED TOMO * @param {*} dataSet */ function extractOrientationFromNMMultiframeDataset(dataSet) { let imageOrientationPatient; const modality = dataSet.string('x00080060'); if (modality.includes('NM')) { const imageSubType = getImageTypeSubItemFromDataset(dataSet, 2); if (imageSubType && isNMReconstructable(imageSubType)) { if (dataSet.elements.x00540022) { imageOrientationPatient = getNumberValues( dataSet.elements.x00540022.items[0].dataSet, 'x00200037', 6 ); } } } return imageOrientationPatient; } /** * Extracts the position from NM multiframe dataset, if image type * equal to RECON TOMO or RECON GATED TOMO * @param {*} dataSet */ function extractPositionFromNMMultiframeDataset(dataSet) { let imagePositionPatient; const modality = dataSet.string('x00080060'); if (modality.includes('NM')) { const imageSubType = getImageTypeSubItemFromDataset(dataSet, 2); if (imageSubType && isNMReconstructable(imageSubType)) { if (dataSet.elements.x00540022) { imagePositionPatient = getNumberValues( dataSet.elements.x00540022.items[0].dataSet, 'x00200032', 3 ); } } } return imagePositionPatient; } /** * Extract orientation information from a dataset. It tries to get the orientation * from the Detector Information Sequence (for NM images) if image type equal * to RECON TOMO or RECON GATED TOMO * @param {*} dataSet */ function extractOrientationFromDataset(dataSet) { let imageOrientationPatient = getNumberValues(dataSet, 'x00200037', 6); // Trying to get the orientation from the Plane Orientation Sequence if (!imageOrientationPatient && dataSet.elements.x00209116) { imageOrientationPatient = getNumberValues( dataSet.elements.x00209116.items[0].dataSet, 'x00200037', 6 ); } // If orientation not valid to this point, trying to get the orientation // from the Detector Information Sequence (for NM images) with image type // equal to RECON TOMO or RECON GATED TOMO if (!imageOrientationPatient) { imageOrientationPatient = extractOrientationFromNMMultiframeDataset(dataSet); } return imageOrientationPatient; } /** * Extract position information from a dataset. It tries to get the position * from the Detector Information Sequence (for NM images) if image type equal * to RECON TOMO or RECON GATED TOMO * @param {*} dataSet */ function extractPositionFromDataset(dataSet) { let imagePositionPatient = getNumberValues(dataSet, 'x00200032', 3); // Trying to get the position from the Plane Position Sequence if (!imagePositionPatient && dataSet.elements.x00209113) { imagePositionPatient = getNumberValues( dataSet.elements.x00209113.items[0].dataSet, 'x00200032', 3 ); } // If position not valid to this point, trying to get the position // from the Detector Information Sequence (for NM images) if (!imagePositionPatient) { imagePositionPatient = extractPositionFromNMMultiframeDataset(dataSet); } return imagePositionPatient; } /** * Extract the pixelSpacing information. If exists, extracts this information * from Pixel Measures Sequence * @param {*} dataSet */ function extractSpacingFromDataset(dataSet) { let pixelSpacing = getNumberValues(dataSet, 'x00280030', 2); // If pixelSpacing not valid to this point, trying to get the spacing // from the Pixel Measures Sequence if (!pixelSpacing && dataSet.elements.x00289110) { pixelSpacing = getNumberValues( dataSet.elements.x00289110.items[0].dataSet, 'x00280030', 2 ); } return pixelSpacing; } /** * Extract the sliceThickness information. If exists, extracts this information * from Pixel Measures Sequence * @param {*} dataSet */ function extractSliceThicknessFromDataset(dataSet) { let sliceThickness; if (dataSet.elements.x00180050) { sliceThickness = dataSet.floatString('x00180050'); } else if ( dataSet.elements.x00289110 && dataSet.elements.x00289110.items.length && dataSet.elements.x00289110.items[0].dataSet.elements.x00180050 ) { sliceThickness = dataSet.elements.x00289110.items[0].dataSet.floatString('x00180050'); } return sliceThickness; } export { getImageTypeSubItemFromDataset, extractOrientationFromDataset, extractPositionFromDataset, extractSpacingFromDataset, extractSliceThicknessFromDataset, }; </code></pre> </article> </section> </div> <br class="clear"> <footer> Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.6.7</a> using the <a href="https://github.com/clenemt/docdash">docdash</a> theme. </footer> <script>prettyPrint();</script> <script src="scripts/polyfill.js"></script> <script src="scripts/linenumber.js"></script> </body> </html>