diff --git a/src/io/readWriteImage.ts b/src/io/readWriteImage.ts
index 1ac2fafd..41132c70 100644
--- a/src/io/readWriteImage.ts
+++ b/src/io/readWriteImage.ts
@@ -6,13 +6,13 @@ import {
   writeImage as writeImageItk,
 } from '@itk-wasm/image-io';
 import { vtiReader, vtiWriter } from '@/src/io/vtk/async';
+import { getWorker } from '@/src/io/itk/worker';
 
 export const readImage = async (file: File) => {
   if (file.name.endsWith('.vti'))
     return (await vtiReader(file)) as vtkImageData;
 
-  const { image, webWorker } = await readImageItk(file);
-  webWorker.terminate();
+  const { image } = await readImageItk(file, { webWorker: getWorker() });
   return vtkITKHelper.convertItkToVtkImage(image);
 };
 
@@ -34,7 +34,8 @@ export const writeImage = async (format: string, image: vtkImageData) => {
     }
   }
 
-  const result = await writeImageItk(itkImage, `image.${format}`);
-  result.webWorker?.terminate();
+  const result = await writeImageItk(itkImage, `image.${format}`, {
+    webWorker: getWorker(),
+  });
   return result.serializedImage.data;
 };
diff --git a/src/io/readers.ts b/src/io/readers.ts
index 7cccf9c7..fb2ae955 100644
--- a/src/io/readers.ts
+++ b/src/io/readers.ts
@@ -1,5 +1,6 @@
 import { convertItkToVtkImage } from '@kitware/vtk.js/Common/DataModel/ITKHelper';
 import { readImage, extensionToImageIo } from '@itk-wasm/image-io';
+import { getWorker } from '@/src/io/itk/worker';
 import { FileReaderMap } from '.';
 
 import { stlReader, vtiReader, vtpReader } from './vtk/async';
@@ -14,8 +15,9 @@ export const ITK_IMAGE_MIME_TYPES = Array.from(
 );
 
 async function itkReader(file: File) {
-  const { image, webWorker } = await readImage(file);
-  webWorker.terminate();
+  const { image } = await readImage(file, {
+    webWorker: getWorker(),
+  });
   return convertItkToVtkImage(image);
 }