User Interface Features
The orthogonal slice viewer displays the axial, coronal, and sagittal plane intersecting the currently selected coordinate. Above the viewer is the toolbar which may contain menus, image buttons and coordinate mode buttons. Beneath the viewer is the coordinate and atlas label display area. Other features may be turned on or off based on configuration.
Some of these controls options depend on configuration and may or may not be available. The default configuration of Papaya should include all of these controls.
- (Left-click and drag) Change current coordinate.
- (Right-click and drag) Adjust brightness/contrast.
- (Ctrl/Command)(Left-click and drag) Adjust brightness/contrast.
- (Alt)(Left-click and drag) to zoom.
- (Alt)(Shift)(Left-click and drag) to pan when in zoomed state.
- (<) or (,) Decrement the timepoint.
- (>) or (.) Increment the timepoint.
- (Spacebar) Cycle the main slice view.
- (Page Up) or (') Increment the axial slice.
- (Page Down) or (/) Decrement the axial slice.
- (Arrow Up) and (Arrow Down) Change the coronal slice.
- (Arrow Right) and (Arrow Left) Change the sagittal slice.
- (g) and (v) Change main slice, regardless of slice direction.
- (o) Navigate viewer to the image origin.
Depending on how the viewer is configured as well as the available space, on-screen button controls (e.g., move crosshairs, move within series, swap main view) may appear overlaid onto the main slice viewer or as a control bar beneath the viewer.
Image files can be dragged from the local file system and dropped onto the viewer in the browser window to load them.
From this menu you can select files to display in the viewer.
- Add Image. Opens a file dialog from which you can select an image to load.
- Add Surface. Opens a file dialog from which you can select a surface file.
- Add [Image Name]. Loads this image in the viewer.
- Add DICOM Folder. (Chrome Only) Opens a file dialog from which you can select a folder. All DICOM files in the folder will be processed and a selection dialog of all found series will be presented.
- Add DTI Vector Series. Opens a file dialog from which you can select a DTI vector series.
- Close All. Closes all loaded images in the viewer.
From this menu you can select view options.
- Orientation – Select whether orientation markers will be displayed.
- Ruler – Select whether to display a ruler (ruler units are in millimeters).
- Main Crosshairs – Select whether to display crosshairs on main slice view.
- Lower Crosshairs – Select whether to display crosshairs on lower slice views.
- Surface Planes – Select whether to display active slice planes on the surface view.
From this menu you can change and store various application options.
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Viewer Preferences. Manage viewer preferences.
- Coordinate display of – Select whether the coordinate display pertains to the mouse or crosshairs location.
- Scroll wheel behavior – Select whether scroll wheel controls zoom or slice increment.
- Smooth display – Select whether to display actual voxels or smoothed images.
- Radiological display – Select whether to use Radiological or Neurological display convention.
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Surface Preferences. Manage surface viewer preferences.
- Background color – Select a background color for the surface viewer.
From this menu you can select help references.
- Show Keyboard Reference. Shows a list of keyboard commands.
- Show Mouse Reference. Shows a list of mouse commands.
- Show License. Shows End-User License Agreement.
Each image loaded into the viewer is represented by an icon. Clicking an image stack icon will select that image as well as open a menu with more options. The coordinate display area shows the voxel values of the currently selected image.
Depending on the type of image which is loaded, different options may appear. Below are three examples: a base image (left), a typical overlay (center) and a DTI image (right).
- Show Header. Displays a dialog with a raw dump of the image header.
- Show Image Info. Displays a dialog with a summary of image information, such as dimensions, orientation, etc.
- Range. Adjust the minimum and maximum of the display range. Image display range can also be adjusted by right-clicking and dragging within the main slice view.
- Load Negatives. Select to load another instance of this image with a negative display range.
- Transparency. Adjust the transparency level of overlays.
- Color Table. Select a different color table.
- Open in Mango. Select this to load the image in the desktop version of Mango.
- Hide/Show Overlay. Select this to hide or show the overlay.
- Close Overlay. Select this to remove the overlay from the display.
- Display Colors. Displays DTI images as RGB
- Display Lines. Displays DTI images as lines.
- Display Lines & Colors. Displays DTI images as colored lines.
- Modulate with. Opens a file dialog to select an image to modulate the DTI.
- Modulation. Adjust the modulation amount.
- Rotation. Rotate the the image about the X, Y, or Z axis.
The base image can be rotated about the X, Y, or Z axis. The point of rotation can be selected as either the center of image space, the image origin, or at the current location of the crosshairs.
Select between world space or index space. To align images of different dimensions, based on millimeter distances from an origin, select world space.
Controls to expand or collapse nested viewers. When expanded, a nested viewer will occupy the entire page.