@niivue/dicom-loader/dist/index.mjs

a module to load DICOM files into a format that can be used by niivue

// src/index.ts
import { Dcm2niix } from "@niivue/dcm2niix";
async function dicomLoader(data) {
  const dcm2niix = new Dcm2niix();
  await dcm2niix.init();
  let returnedFiles = [];
  if (Array.isArray(data) && data.length === 1 && data[0].data instanceof ArrayBuffer) {
    const fileObj = data[0];
    const file = new File([fileObj.data], fileObj.name, { type: "application/octet-stream" });
    returnedFiles = await dcm2niix.input([file]).run();
  } else if (Array.isArray(data) && data.length > 0) {
    const first = data[0];
    if (first.data instanceof ArrayBuffer) {
      const files = [];
      for (let i = 0; i < data.length; i++) {
        const dicom = data[i];
        const file = new File([dicom.data], dicom.name, { type: "application/octet-stream" });
        files.push(file);
      }
      returnedFiles = await dcm2niix.input(files).run();
    } else {
      returnedFiles = await dcm2niix.input(data).run();
    }
  }
  const niiFiles = returnedFiles.filter((file) => file.name.endsWith(".nii") || file.name.endsWith(".nii.gz"));
  const arrayBuffers = [];
  for (const file of niiFiles) {
    const niiArrayBuffer = await file.arrayBuffer();
    arrayBuffers.push({ name: file.name, data: niiArrayBuffer });
  }
  return arrayBuffers;
}
export {
  dicomLoader
};
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