Special Keys and Short Cuts

Shifting one Slice (or Voxel) within the Reference Image Data:

Note: all these steps are w.r.t. to the original data slicing orientation
(i.e. 'one slice up' moves forwards inthe patient a coronal acquisition, but upwards in the patient in a transaxialacquisition)

PAGE UP steps one slice 'upwards' inthe data.
PAGE DOWN steps one slice 'down' inthe data.
CURSOR LEFT steps one pixel/voxel leftin the data (left in patient for transaxial data).
CURSOR RIGHT steps one pixel/voxel right in the data (right in patient for transaxial data).
CURSOR UP steps one pixel/voxel forward.
CURSOR DOWN steps one pixel/voxel backwards.
HOME returns the display origin tothe middle of the reference image volume.

Zooming

INSERT zooms IN by 100%
DELETE zooms OUT by 100%

Shifting mm steps within the data

To quickly skip up or down a given mm step in the image volume press the keys:

'S' to go up 9mm
's' to go up 6mm
'A' to go up 3mm
'a' to go up 1.5mm

'X' to go down 9mm
'x' to go down 6mm
'Z' to go down 3mm
'z' to go down 1.5mm

'Q' to go right (IN THE PATIENT) by 3mm
'q' to go right (IN THE PATIENT) by 1.5mm

'W' to go left (IN THE PATIENT) by 3mm
'w' to go left (IN THE PATIENT) by 1.5mm

'K' to go forwards by 3mm
'k' to go forwards by 1.5mm

'M' to go backwards by 3mm
'm' to go backwards by 1.5mm

Notes:

This will always move along the axis ofthe patient as long as the slicing orientation of the data was read correctly from the data files (i.e.. the transaxial slice appears in the correctrview window). The direction is respect the
current orientation of the displayed slices.

The actual step is always 3mm or 1.5mm:it does not depend on the slice thickness of the reference image data.The nearest slice is approximated using the current interpolation mode (best to use tri-linear).

Modifying the Registration Transformation:

To interactively shift the registration estimate for image A up and down (This is for images where say one image has a large axial extent and the starting registration estimate needs to be set manually), use the keys:

'G' to shift up 9mm
'g' to shift up by 6mm

'V' to shift down 9mm
'v' to shift down by 6mm

Moving an ROI in PlanarROI modes

To Move an ROI in drawing mode rather thanredraw it, hold down the 'R' key.

Drawing an ROI in Manual Volume Segmentation Mode:

Hold down the SPACE BAR