VXLPA

VisionX V4
NAME

vxlpa − computes the lung profile, and critical locations

SYNOPSIS

vxlpa if=<lungregion> of=<outfile> oh=<smoothedprof> ct=<textprofile> -w

DESCRIPTION

vxlpa takes in a separate lung and computes the lung profile based on area of the lung region across axial slices. Then using the output lung profile (ot), apex of each diaphragm is computed and the higher apex is used as top of the diaphragm.

The -w option prints characteristics of the lung profile to standard out.

CONSTRAINT

Input file if is a binary image of a single lung (left or right). Output text file ot is used to find the top of diaphragm (depreciated).

OPTIONS

if=

left or right lung

of=

output file

oh=

output smoothed profile

ot=

output text file

-w

Provide the following charactersistics of the lung profile to standard output in wish format:

toploc

The z coordinate of the highest point on the lungs (robust) requires min of 12

apxloc

the z coordinate of the greates cross section area of the lung

apxloc

the z location of the lowest point of the lung diaphragm

tr1

the z location of the upper third of the lung by volume

tr2

the z location of the lower third of the lung by volume

tx

the x location of the top axis

ty

the y location of the top axis

ty

the z location of the top axis (4 lower than toploc)

ax

the x location of the apex (largest area slice) axis

ay

the y location of the apex (largest area slice) axis

bx

the x location of the bottom projected axis

ay

the y location of the bottom projected axis

bounding box

The lung regioun bounding box is given by xlo, xhi, ylo, yhi, zlo and zhi

SEE ALSO

vaseg(1)

AUTHOR

A. P. Reeves