Introduction
Rview is a simple volumetric display tool. It
is based around a single 3D 'reference' space into which multiple volume images
can be loaded. A screen display of this data is then rendered from user selected
slices through this volume. The arrangement or layout of the display and
the type of slices shown can be varied considerably to allow data sets to
be viewed together for different applications. The slices are derived relative
to a single 3D user defined coordinate. For example, a simple display may
consist of three orthogonal slices (say transaxial, coronal and sagittal)
through this user defined point placed at the centre of a lesion.
Volumetric image data is loaded either as
a reference volume (typically this is an anatomical MRI image) or one of
the multiple 'floating' images (for example CT, SPECT or PET). These are
termed 'floating' since their location relative to the reference space (and
the reference image data) is controlled by a variable linear 3D transformation.
Given the correct geometric transformations to bring each of the floating
images into registration with the reference image, rview can produce a range
of fused displays which show slices that combine information from the multiple
data sets (for example SPECT uptake overlaid onto MRI anatomy).