diff --git a/platform/core/src/DICOMWeb/getAuthorizationHeader.js b/platform/core/src/DICOMWeb/getAuthorizationHeader.js
index 7d4109896..3acc96ff1 100644
--- a/platform/core/src/DICOMWeb/getAuthorizationHeader.js
+++ b/platform/core/src/DICOMWeb/getAuthorizationHeader.js
@@ -9,7 +9,7 @@ import user from '../user';
  * @export
  * @param {Object} [server={}]
  * @param {Object} [server.requestOptions]
- * @param {string} [server.requestOptions.auth]
+ * @param {string|function} [server.requestOptions.auth]
  * @returns {Object} { Authorization }
  */
 export default function getAuthorizationHeader({ requestOptions } = {}) {
@@ -19,8 +19,13 @@ export default function getAuthorizationHeader({ requestOptions } = {}) {
   const accessToken = user && user.getAccessToken && user.getAccessToken();
 
   if (requestOptions && requestOptions.auth) {
-    // HTTP Basic Auth (user:password)
-    headers.Authorization = `Basic ${btoa(requestOptions.auth)}`;
+    if (typeof requestOptions.auth === 'function') {
+      // Custom Auth Header
+      headers.Authorization = requestOptions.auth(requestOptions);
+    } else {
+      // HTTP Basic Auth (user:password)
+      headers.Authorization = `Basic ${btoa(requestOptions.auth)}`;
+    }
   } else if (accessToken) {
     headers.Authorization = `Bearer ${accessToken}`;
   }
diff --git a/platform/core/src/DICOMWeb/getAuthorizationHeader.test.js b/platform/core/src/DICOMWeb/getAuthorizationHeader.test.js
index cdf3aa198..158e6549e 100644
--- a/platform/core/src/DICOMWeb/getAuthorizationHeader.test.js
+++ b/platform/core/src/DICOMWeb/getAuthorizationHeader.test.js
@@ -7,10 +7,7 @@ describe('getAuthorizationHeader', () => {
   it('should return a HTTP Basic Auth when server contains requestOptions.auth', () => {
     const validServer = {
       requestOptions: {
-        auth: {
-          user: 'dummy_user',
-          password: 'dummy_password',
-        },
+        auth: 'dummy_user:dummy_password',
       },
     };
 
@@ -26,9 +23,7 @@ describe('getAuthorizationHeader', () => {
   it('should return a HTTP Basic Auth when server contains requestOptions.auth even though there is no password', () => {
     const validServerWithoutPassword = {
       requestOptions: {
-        auth: {
-          user: 'dummy_user',
-        },
+        auth: 'dummy_user',
       },
     };
 
@@ -43,22 +38,19 @@ describe('getAuthorizationHeader', () => {
     expect(authentication).toEqual(expectedAuthorizationHeader);
   });
 
-  it('should return a HTTP Basic Auth when server contains requestOptions.auth even though there is no username', () => {
-    const validServerWithoutPassword = {
+  it('should return a HTTP Basic Auth when server contains requestOptions.auth custom function', () => {
+    const validServerCustomAuth = {
       requestOptions: {
-        auth: {
-          user: 'dummy_user',
-        },
+        auth: options => `Basic ${options.token}`,
+        token: 'ZHVtbXlfdXNlcjpkdW1teV9wYXNzd29yZA==',
       },
     };
 
     const expectedAuthorizationHeader = {
-      Authorization: `Basic ${btoa(
-        validServerWithoutPassword.requestOptions.auth
-      )}`,
+      Authorization: `Basic ${validServerCustomAuth.requestOptions.token}`,
     };
 
-    const authentication = getAuthorizationHeader(validServerWithoutPassword);
+    const authentication = getAuthorizationHeader(validServerCustomAuth);
 
     expect(authentication).toEqual(expectedAuthorizationHeader);
   });