diff --git a/.vscode/settings.json b/.vscode/settings.json
index 7f147e3a1..4b51e8899 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -82,6 +82,7 @@
     "Reslices",
     "roadmap",
     "ROADMAPS",
+    "rtstruct",
     "Segmentations",
     "semibold",
     "sitk",
diff --git a/extensions/cornerstone-dicom-rt/src/viewports/OHIFCornerstoneRTViewport.tsx b/extensions/cornerstone-dicom-rt/src/viewports/OHIFCornerstoneRTViewport.tsx
index e2448cd2d..59bfda9b4 100644
--- a/extensions/cornerstone-dicom-rt/src/viewports/OHIFCornerstoneRTViewport.tsx
+++ b/extensions/cornerstone-dicom-rt/src/viewports/OHIFCornerstoneRTViewport.tsx
@@ -169,7 +169,7 @@ function OHIFCornerstoneRTViewport(props: withAppTypes) {
         {...props}
         displaySets={[referencedDisplaySet, rtDisplaySet]}
         viewportOptions={{
-          viewportType: 'stack',
+          viewportType: viewportOptions.viewportType,
           toolGroupId: toolGroupId,
           orientation: viewportOptions.orientation,
           viewportId: viewportOptions.viewportId,
diff --git a/extensions/default/src/utils/layerConfigurationUtils.ts b/extensions/default/src/utils/layerConfigurationUtils.ts
index 917fd80e9..44bad77e9 100644
--- a/extensions/default/src/utils/layerConfigurationUtils.ts
+++ b/extensions/default/src/utils/layerConfigurationUtils.ts
@@ -67,9 +67,21 @@ export function configureViewportForLayerAddition(params: {
 
   // If a viewport type was already set do not reset it.
   if (!viewport.viewportOptions.viewportType) {
-    // Do not force volume for SEG and RTSTRUCT if there is only one display set
-    if (requestedLayerDisplaySet.isOverlayDisplaySet && currentDisplaySetUIDs.length === 1) {
-      viewport.viewportOptions.viewportType = 'stack';
+    // Special handling for overlay display sets
+    if (requestedLayerDisplaySet.isOverlayDisplaySet) {
+      // Do not force volume for SEG and RTSTRUCT if it and all the current display sets are for the same display set
+      const isSameDisplaySet = currentDisplaySetUIDs.every(uid => {
+        const currentDisplaySet = displaySetService.getDisplaySetByUID(uid);
+        return currentDisplaySet.isOverlayDisplaySet
+          ? currentDisplaySet.referencedDisplaySetInstanceUID ===
+              requestedLayerDisplaySet.referencedDisplaySetInstanceUID
+          : uid === requestedLayerDisplaySet.referencedDisplaySetInstanceUID;
+      });
+      if (isSameDisplaySet) {
+        viewport.viewportOptions.viewportType = 'stack';
+      } else {
+        viewport.viewportOptions.viewportType = 'volume';
+      }
     } else {
       viewport.viewportOptions.viewportType = 'volume';
     }
diff --git a/tests/MPRThenRTOverlayNoHydration.spec.ts b/tests/MPRThenRTOverlayNoHydration.spec.ts
new file mode 100644
index 000000000..633789dcf
--- /dev/null
+++ b/tests/MPRThenRTOverlayNoHydration.spec.ts
@@ -0,0 +1,41 @@
+import { test } from 'playwright-test-coverage';
+import { visitStudy, checkForScreenshot, screenShotPaths } from './utils';
+
+test.beforeEach(async ({ page }) => {
+  const studyInstanceUID = '1.3.6.1.4.1.5962.99.1.2968617883.1314880426.1493322302363.3.0';
+  const mode = 'viewer';
+  await visitStudy(page, studyInstanceUID, mode, 2000);
+});
+
+test('should launch MPR with unhydrated RTSTRUCT chosen from the data overlay menu', async ({
+  page,
+}) => {
+  await page.getByTestId('side-panel-header-right').click();
+
+  await page.getByTestId('Layout').click();
+  await page.getByTestId('MPR').click();
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(
+    page,
+    page,
+    screenShotPaths.mprThenRTOverlayNoHydration.mprPreRTOverlayNoHydration
+  );
+
+  // Hover over the middle/sagittal viewport so that the data overlay menu is available.
+  await page.locator('css=div[data-viewportid="mpr-sagittal"]').hover();
+  await page.getByTestId('dataOverlayMenu-mpr-sagittal-btn').click();
+  await page.getByTestId('AddSegmentationDataOverlay-mpr-sagittal').click();
+  await page.getByText('SELECT A SEGMENTATION').click();
+  await page.getByTestId('ARIA RadOnc Structure Sets').click();
+
+  // Hide the overlay menu.
+  await page.getByTestId('dataOverlayMenu-mpr-sagittal-btn').click();
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(
+    page,
+    page,
+    screenShotPaths.mprThenRTOverlayNoHydration.mprPostRTOverlayNoHydration
+  );
+});
diff --git a/tests/RTDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts b/tests/RTDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts
new file mode 100644
index 000000000..64af43251
--- /dev/null
+++ b/tests/RTDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts
@@ -0,0 +1,38 @@
+import { test } from 'playwright-test-coverage';
+import { visitStudy, checkForScreenshot, screenShotPaths } from './utils';
+import { press } from './utils/keyboardUtils';
+
+test.beforeEach(async ({ page }) => {
+  const studyInstanceUID = '1.2.840.113619.2.290.3.3767434740.226.1600859119.501';
+  const mode = 'segmentation';
+  await visitStudy(page, studyInstanceUID, mode, 2000);
+});
+
+test('should overlay an unhydrated RTSTRUCT over a display set that the RTSTRUCT does NOT reference', async ({
+  page,
+}) => {
+  await page.getByTestId('dataOverlayMenu-default-btn').click();
+  await page.getByTestId('AddSegmentationDataOverlay-default').click();
+  await page.getByText('SELECT A SEGMENTATION').click();
+  await page.getByTestId('Contours on PET').click();
+
+  // Hide the overlay menu.
+  await page.getByTestId('dataOverlayMenu-default-btn').click();
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(
+    page,
+    page,
+    screenShotPaths.rtDataOverlayForUnreferencedDisplaySetNoHydration.overlayFirstImage
+  );
+
+  // Navigate to the middle image of the default viewport.
+  await press({ page, key: 'ArrowDown', nTimes: 23 });
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(
+    page,
+    page,
+    screenShotPaths.rtDataOverlayForUnreferencedDisplaySetNoHydration.overlayMiddleImage
+  );
+});
diff --git a/tests/RTDataOverlayNoHydrationThenMPR.spec.ts b/tests/RTDataOverlayNoHydrationThenMPR.spec.ts
new file mode 100644
index 000000000..389a57464
--- /dev/null
+++ b/tests/RTDataOverlayNoHydrationThenMPR.spec.ts
@@ -0,0 +1,38 @@
+import { test } from 'playwright-test-coverage';
+import { visitStudy, checkForScreenshot, screenShotPaths } from './utils';
+
+test.beforeEach(async ({ page }) => {
+  const studyInstanceUID = '1.3.6.1.4.1.5962.99.1.2968617883.1314880426.1493322302363.3.0';
+  const mode = 'viewer';
+  await visitStudy(page, studyInstanceUID, mode, 2000);
+});
+
+test('should launch MPR with unhydrated RTSTRUCT chosen from the data overlay menu', async ({
+  page,
+}) => {
+  await page.getByTestId('side-panel-header-right').click();
+  await page.getByTestId('dataOverlayMenu-default-btn').click();
+  await page.getByTestId('AddSegmentationDataOverlay-default').click();
+  await page.getByText('SELECT A SEGMENTATION').click();
+  await page.getByTestId('ARIA RadOnc Structure Sets').click();
+
+  // Hide the overlay menu.
+  await page.getByTestId('dataOverlayMenu-default-btn').click();
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(
+    page,
+    page,
+    screenShotPaths.rtDataOverlayNoHydrationThenMPR.rtDataOverlayNoHydrationPreMPR
+  );
+
+  await page.getByTestId('Layout').click();
+  await page.getByTestId('MPR').click();
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(
+    page,
+    page,
+    screenShotPaths.rtDataOverlayNoHydrationThenMPR.rtDataOverlayNoHydrationPostMPR
+  );
+});
diff --git a/tests/RTHydrationFromMPR.spec.ts b/tests/RTHydrationFromMPR.spec.ts
new file mode 100644
index 000000000..fae1ffadf
--- /dev/null
+++ b/tests/RTHydrationFromMPR.spec.ts
@@ -0,0 +1,42 @@
+import { test } from 'playwright-test-coverage';
+import { visitStudy, checkForScreenshot, screenShotPaths } from './utils';
+
+test.beforeEach(async ({ page }) => {
+  const studyInstanceUID = '1.3.6.1.4.1.5962.99.1.2968617883.1314880426.1493322302363.3.0';
+  const mode = 'viewer';
+  await visitStudy(page, studyInstanceUID, mode, 2000);
+});
+
+test('should hydrate an RTSTRUCT from MPR', async ({ page }) => {
+  await page.getByTestId('side-panel-header-right').click();
+
+  await page.getByTestId('Layout').click();
+  await page.getByTestId('MPR').click();
+
+  await page.waitForTimeout(5000);
+
+  await checkForScreenshot(page, page, screenShotPaths.rtHydrationFromMPR.mprBeforeRT);
+
+  await page.getByTestId('study-browser-thumbnail-no-image').dblclick();
+
+  await page.waitForTimeout(5000);
+
+  await checkForScreenshot(page, page, screenShotPaths.rtHydrationFromMPR.mprAfterRT);
+
+  await page.getByTestId('yes-hydrate-btn').click();
+
+  await page.waitForTimeout(5000);
+
+  await checkForScreenshot(page, page, screenShotPaths.rtHydrationFromMPR.mprAfterRTHydrated);
+
+  await page.getByTestId('Layout').click();
+  await page.getByTestId('Axial Primary').click();
+
+  await page.waitForTimeout(5000);
+
+  await checkForScreenshot(
+    page,
+    page,
+    screenShotPaths.rtHydrationFromMPR.mprAfterRTHydratedAfterLayoutChange
+  );
+});
diff --git a/tests/RTHydrationThenMPR.spec.ts b/tests/RTHydrationThenMPR.spec.ts
new file mode 100644
index 000000000..440a4d13c
--- /dev/null
+++ b/tests/RTHydrationThenMPR.spec.ts
@@ -0,0 +1,28 @@
+import { test } from 'playwright-test-coverage';
+import { visitStudy, checkForScreenshot, screenShotPaths } from './utils';
+
+test.beforeEach(async ({ page }) => {
+  const studyInstanceUID = '1.3.6.1.4.1.5962.99.1.2968617883.1314880426.1493322302363.3.0';
+  const mode = 'viewer';
+  await visitStudy(page, studyInstanceUID, mode, 2000);
+});
+
+test('should hydrate an RTSTRUCT and then launch MPR', async ({ page }) => {
+  await page.getByTestId('side-panel-header-right').click();
+  await page.getByTestId('study-browser-thumbnail-no-image').dblclick();
+
+  await page.getByTestId('yes-hydrate-btn').click();
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(page, page, screenShotPaths.rtHydrationThenMPR.rtPostHydration);
+
+  await page.getByTestId('Layout').click();
+  await page.getByTestId('Axial Primary').click();
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(
+    page,
+    page,
+    screenShotPaths.rtHydrationThenMPR.rtPostHydrationMPRAxialPrimary
+  );
+});
diff --git a/tests/RTNoHydrationThenMPR.spec.ts b/tests/RTNoHydrationThenMPR.spec.ts
new file mode 100644
index 000000000..71006aead
--- /dev/null
+++ b/tests/RTNoHydrationThenMPR.spec.ts
@@ -0,0 +1,22 @@
+import { test } from 'playwright-test-coverage';
+import { visitStudy, checkForScreenshot, screenShotPaths } from './utils';
+
+test.beforeEach(async ({ page }) => {
+  const studyInstanceUID = '1.3.6.1.4.1.5962.99.1.2968617883.1314880426.1493322302363.3.0';
+  const mode = 'viewer';
+  await visitStudy(page, studyInstanceUID, mode, 2000);
+});
+
+test('should launch MPR with unhydrated RTSTRUCT', async ({ page }) => {
+  await page.getByTestId('side-panel-header-right').click();
+  await page.getByTestId('study-browser-thumbnail-no-image').dblclick();
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(page, page, screenShotPaths.rtNoHydrationThenMPR.rtNoHydrationPreMPR);
+
+  await page.getByTestId('Layout').click();
+  await page.getByTestId('MPR').click();
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(page, page, screenShotPaths.rtNoHydrationThenMPR.rtNoHydrationPostMPR);
+});
diff --git a/tests/SEGDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts b/tests/SEGDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts
new file mode 100644
index 000000000..ce2b684a9
--- /dev/null
+++ b/tests/SEGDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts
@@ -0,0 +1,38 @@
+import { test } from 'playwright-test-coverage';
+import { visitStudy, checkForScreenshot, screenShotPaths } from './utils';
+import { press } from './utils/keyboardUtils';
+
+test.beforeEach(async ({ page }) => {
+  const studyInstanceUID = '1.3.6.1.4.1.14519.5.2.1.1706.8374.643249677828306008300337414785';
+  const mode = 'segmentation';
+  await visitStudy(page, studyInstanceUID, mode, 2000);
+});
+
+test('should overlay an unhydrated SEG over a display set that the SEG does NOT reference', async ({
+  page,
+}) => {
+  await page.getByTestId('dataOverlayMenu-default-btn').click();
+  await page.getByTestId('AddSegmentationDataOverlay-default').click();
+  await page.getByText('SELECT A SEGMENTATION').click();
+  await page.getByTestId('Segmentation').click();
+
+  // Hide the overlay menu.
+  await page.getByTestId('dataOverlayMenu-default-btn').click();
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(
+    page,
+    page,
+    screenShotPaths.segDataOverlayForUnreferencedDisplaySetNoHydration.overlayFirstImage
+  );
+
+  // Navigate to the middle image of the default viewport.
+  await press({ page, key: 'ArrowDown', nTimes: 9 });
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(
+    page,
+    page,
+    screenShotPaths.segDataOverlayForUnreferencedDisplaySetNoHydration.overlayMiddleImage
+  );
+});
diff --git a/tests/screenshots/chromium/MPRThenRTOverlayNoHydration.spec.ts/mprPostRTOverlayNoHydration.png b/tests/screenshots/chromium/MPRThenRTOverlayNoHydration.spec.ts/mprPostRTOverlayNoHydration.png
new file mode 100644
index 000000000..181839d0a
Binary files /dev/null and b/tests/screenshots/chromium/MPRThenRTOverlayNoHydration.spec.ts/mprPostRTOverlayNoHydration.png differ
diff --git a/tests/screenshots/chromium/MPRThenRTOverlayNoHydration.spec.ts/mprPreRTOverlayNoHydration.png b/tests/screenshots/chromium/MPRThenRTOverlayNoHydration.spec.ts/mprPreRTOverlayNoHydration.png
new file mode 100644
index 000000000..ce94c3bbb
Binary files /dev/null and b/tests/screenshots/chromium/MPRThenRTOverlayNoHydration.spec.ts/mprPreRTOverlayNoHydration.png differ
diff --git a/tests/screenshots/chromium/RTDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts/overlayFirstImage.png b/tests/screenshots/chromium/RTDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts/overlayFirstImage.png
new file mode 100644
index 000000000..231df8c8d
Binary files /dev/null and b/tests/screenshots/chromium/RTDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts/overlayFirstImage.png differ
diff --git a/tests/screenshots/chromium/RTDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts/overlayMiddleImage.png b/tests/screenshots/chromium/RTDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts/overlayMiddleImage.png
new file mode 100644
index 000000000..30654c0e4
Binary files /dev/null and b/tests/screenshots/chromium/RTDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts/overlayMiddleImage.png differ
diff --git a/tests/screenshots/chromium/RTDataOverlayNoHydrationThenMPR.spec.ts/rtDataOverlayNoHydrationPostMpr.png b/tests/screenshots/chromium/RTDataOverlayNoHydrationThenMPR.spec.ts/rtDataOverlayNoHydrationPostMpr.png
new file mode 100644
index 000000000..d507a1bef
Binary files /dev/null and b/tests/screenshots/chromium/RTDataOverlayNoHydrationThenMPR.spec.ts/rtDataOverlayNoHydrationPostMpr.png differ
diff --git a/tests/screenshots/chromium/RTDataOverlayNoHydrationThenMPR.spec.ts/rtDataOverlayNoHydrationPreMpr.png b/tests/screenshots/chromium/RTDataOverlayNoHydrationThenMPR.spec.ts/rtDataOverlayNoHydrationPreMpr.png
new file mode 100644
index 000000000..1005f2a65
Binary files /dev/null and b/tests/screenshots/chromium/RTDataOverlayNoHydrationThenMPR.spec.ts/rtDataOverlayNoHydrationPreMpr.png differ
diff --git a/tests/screenshots/chromium/RTHydrationFromMPR.spec.ts/mprAfterRT.png b/tests/screenshots/chromium/RTHydrationFromMPR.spec.ts/mprAfterRT.png
new file mode 100644
index 000000000..b85a4d88d
Binary files /dev/null and b/tests/screenshots/chromium/RTHydrationFromMPR.spec.ts/mprAfterRT.png differ
diff --git a/tests/screenshots/chromium/RTHydrationFromMPR.spec.ts/mprAfterRTHydrated.png b/tests/screenshots/chromium/RTHydrationFromMPR.spec.ts/mprAfterRTHydrated.png
new file mode 100644
index 000000000..c3422d0a1
Binary files /dev/null and b/tests/screenshots/chromium/RTHydrationFromMPR.spec.ts/mprAfterRTHydrated.png differ
diff --git a/tests/screenshots/chromium/RTHydrationFromMPR.spec.ts/mprAfterRTHydratedAfterLayoutChange.png b/tests/screenshots/chromium/RTHydrationFromMPR.spec.ts/mprAfterRTHydratedAfterLayoutChange.png
new file mode 100644
index 000000000..b6db95ff0
Binary files /dev/null and b/tests/screenshots/chromium/RTHydrationFromMPR.spec.ts/mprAfterRTHydratedAfterLayoutChange.png differ
diff --git a/tests/screenshots/chromium/RTHydrationFromMPR.spec.ts/mprBeforeRT.png b/tests/screenshots/chromium/RTHydrationFromMPR.spec.ts/mprBeforeRT.png
new file mode 100644
index 000000000..ce94c3bbb
Binary files /dev/null and b/tests/screenshots/chromium/RTHydrationFromMPR.spec.ts/mprBeforeRT.png differ
diff --git a/tests/screenshots/chromium/RTHydrationThenMPR.spec.ts/rtPostHydration.png b/tests/screenshots/chromium/RTHydrationThenMPR.spec.ts/rtPostHydration.png
new file mode 100644
index 000000000..76d0e0004
Binary files /dev/null and b/tests/screenshots/chromium/RTHydrationThenMPR.spec.ts/rtPostHydration.png differ
diff --git a/tests/screenshots/chromium/RTHydrationThenMPR.spec.ts/rtPostHydrationMPRAxialPrimary.png b/tests/screenshots/chromium/RTHydrationThenMPR.spec.ts/rtPostHydrationMPRAxialPrimary.png
new file mode 100644
index 000000000..0ddc408a4
Binary files /dev/null and b/tests/screenshots/chromium/RTHydrationThenMPR.spec.ts/rtPostHydrationMPRAxialPrimary.png differ
diff --git a/tests/screenshots/chromium/RTNoHydrationThenMPR.spec.ts/rtNoHydrationPostMpr.png b/tests/screenshots/chromium/RTNoHydrationThenMPR.spec.ts/rtNoHydrationPostMpr.png
new file mode 100644
index 000000000..a9f5f903a
Binary files /dev/null and b/tests/screenshots/chromium/RTNoHydrationThenMPR.spec.ts/rtNoHydrationPostMpr.png differ
diff --git a/tests/screenshots/chromium/RTNoHydrationThenMPR.spec.ts/rtNoHydrationPreMpr.png b/tests/screenshots/chromium/RTNoHydrationThenMPR.spec.ts/rtNoHydrationPreMpr.png
new file mode 100644
index 000000000..e83f34b53
Binary files /dev/null and b/tests/screenshots/chromium/RTNoHydrationThenMPR.spec.ts/rtNoHydrationPreMpr.png differ
diff --git a/tests/screenshots/chromium/SEGDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts/overlayFirstImage.png b/tests/screenshots/chromium/SEGDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts/overlayFirstImage.png
new file mode 100644
index 000000000..ea0e0a45f
Binary files /dev/null and b/tests/screenshots/chromium/SEGDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts/overlayFirstImage.png differ
diff --git a/tests/screenshots/chromium/SEGDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts/overlayMiddleImage.png b/tests/screenshots/chromium/SEGDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts/overlayMiddleImage.png
new file mode 100644
index 000000000..cfcef4517
Binary files /dev/null and b/tests/screenshots/chromium/SEGDataOverlayForUnreferencedDisplaySetNoHydration.spec.ts/overlayMiddleImage.png differ
diff --git a/tests/utils/keyboardUtils.ts b/tests/utils/keyboardUtils.ts
new file mode 100644
index 000000000..d7f92882c
--- /dev/null
+++ b/tests/utils/keyboardUtils.ts
@@ -0,0 +1,26 @@
+import { Page } from '@playwright/test';
+
+/**
+ * PressParams defines the parameters for the press function.
+ * @property {Page} page - The Playwright page on which to perform the key press.
+ * @property {string} key - The key to be pressed.
+ * @property {number} [nTimes=1] - The number of times to press the key (default is 1).
+ * @property {unknown} [options={}] - Additional options for the key press.
+ */
+type PressParams = {
+  page: Page;
+  key: string;
+  nTimes?: number;
+  options?: unknown;
+};
+
+/**
+ * Convenience function to press a key multiple times on a Playwright page.
+ */
+export const press = async (params: PressParams) => {
+  const { page, key, nTimes = 1, options = {} } = params;
+
+  for (let i = 0; i < nTimes; i += 1) {
+    await page.keyboard.press(key, options);
+  }
+};
diff --git a/tests/utils/screenShotPaths.ts b/tests/utils/screenShotPaths.ts
index 59e3ef60b..591836876 100644
--- a/tests/utils/screenShotPaths.ts
+++ b/tests/utils/screenShotPaths.ts
@@ -69,6 +69,28 @@ const screenShotPaths = {
   reset: {
     resetDisplayedCorrectly: 'resetDisplayedCorrectly.png',
   },
+  rtDataOverlayForUnreferencedDisplaySetNoHydration: {
+    overlayFirstImage: 'overlayFirstImage.png',
+    overlayMiddleImage: 'overlayMiddleImage.png',
+  },
+  rtDataOverlayNoHydrationThenMPR: {
+    rtDataOverlayNoHydrationPreMPR: 'rtDataOverlayNoHydrationPreMpr.png',
+    rtDataOverlayNoHydrationPostMPR: 'rtDataOverlayNoHydrationPostMpr.png',
+  },
+  rtHydrationFromMPR: {
+    mprBeforeRT: 'mprBeforeRT.png',
+    mprAfterRT: 'mprAfterRT.png',
+    mprAfterRTHydrated: 'mprAfterRTHydrated.png',
+    mprAfterRTHydratedAfterLayoutChange: 'mprAfterRTHydratedAfterLayoutChange.png',
+  },
+  rtHydrationThenMPR: {
+    rtPostHydration: 'rtPostHydration.png',
+    rtPostHydrationMPRAxialPrimary: 'rtPostHydrationMPRAxialPrimary.png',
+  },
+  rtNoHydrationThenMPR: {
+    rtNoHydrationPreMPR: 'rtNoHydrationPreMpr.png',
+    rtNoHydrationPostMPR: 'rtNoHydrationPostMpr.png',
+  },
   srHydration: {
     srPostHydration: 'srPostHydration.png',
     srPreHydration: 'srPreHydration.png',
@@ -93,10 +115,18 @@ const screenShotPaths = {
     segNoHydrationPreMPR: 'segNoHydrationPreMpr.png',
     segNoHydrationPostMPR: 'segNoHydrationPostMpr.png',
   },
+  segDataOverlayForUnreferencedDisplaySetNoHydration: {
+    overlayFirstImage: 'overlayFirstImage.png',
+    overlayMiddleImage: 'overlayMiddleImage.png',
+  },
   segDataOverlayNoHydrationThenMPR: {
     segDataOverlayNoHydrationPreMPR: 'segDataOverlayNoHydrationPreMpr.png',
     segDataOverlayNoHydrationPostMPR: 'segDataOverlayNoHydrationPostMpr.png',
   },
+  mprThenRTOverlayNoHydration: {
+    mprPreRTOverlayNoHydration: 'mprPreRTOverlayNoHydration.png',
+    mprPostRTOverlayNoHydration: 'mprPostRTOverlayNoHydration.png',
+  },
   mprThenSEGOverlayNoHydration: {
     mprPreSEGOverlayNoHydration: 'mprPreSEGOverlayNoHydration.png',
     mprPostSEGOverlayNoHydration: 'mprPostSEGOverlayNoHydration.png',