Viewer
Window/level tool W
Zoom/pan tool Z
Measure: drag across a finding M
Invert image I
Show / hide shapes on answer images S
Reset view and clear measurements R
Previous / next slice scroll, PgUp PgDn
First / last slice Home End
Go to a slice Drag the scrollbar beside a stack
Next slice with shapes on it N
Previous / next slice (Open images) ↑ ↓
Previous / next image ← →
Zoom ⌘/Ctrl + scroll
Pan Right-drag
Zoom / pan on a touch screen Pinch, two-finger drag
Cases
Previous / next case ↑ ↓
Quick review: show the answer, then the next case ↓ or Space, ↑ to go back
Flag case for review (exam) F
Leave the answer box, or close the paper overview Esc
Bookmark the case (practice sets) B
Focus mode: hide the case list and answer panel H, Esc to leave
Case editor
Select tool V
Arrow tool A
Circle tool C
Perfect circle Shift + drag
Delete selected shape Delete
Deselect Esc
Undo ⌘/Ctrl + Z
Redo Shift + ⌘/Ctrl + Z
Help
Show shortcuts ?
Close dialog Esc