VLANVisionX V4
NAME
vlan − Front end for VisionX lung analysis
SYNOPSISvlan [-H] [if=<inputfile>] [scan=<outputprefix>] [-i] [-wi] [-v] [-e] [-tr] [-d] [-x]
DESCRIPTIONvlan is the user interface for whole lung analysis. It can analyze whole lung scans or focused scans. First it checks to see if a lung.en file exists, and if not it creates one. The lung.en file is unique for each patient, and information about each successive scan is stored in the file, including filename, date, time, resolution, emphysema index, etc. By default, vlan will add a new scan to the analysis, indicated by s#, where # is the index of the scan. Vlan will always segment the lung region if it does not already exist. Further analyses can be performed by specifying them on the command line.
ALGORITHMvlan is the user interface for other lung analysis programs. It maintains an environment file called lung.en which contains statistics about the scans. Vlan can be used to segment lungs (vslung), compute emphysema analysis (vemph), and preform nodule detection (vdetect). In any mode of operation, vlan first segments the lungs and stores the lung mask in a map file called s#map.vx, where # is the scan index. If segmented lungs exist already, the segmentation is skipped. In the case of emphysema analysis, unless otherwise suppressed by the [-tr] flag, the airway is also segmented (vsairw)
OPTIONS|
if= |
Input File -- a 3D CT scan, either whole lung or focused | ||
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scan= |
Set the scan index to this value, used when reanalyzing a scan. Filenames will be s<scan>lung.vx, s<scan>emph.vx, etc. | ||
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-s |
Segmentation: run vslung | ||
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-e |
Emphysema: run vemph | ||
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-tr |
Suppress trachea extraction during emphysema analysis | ||
|
th= |
Threshold to use for determining emphysema index | ||
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-d |
Detection: run vdetect | ||
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-v |
Verbose operation: output each command as it is processed. | ||
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-i |
output information in shell format | ||
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-wi |
output information in wish format | ||
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-x |
Run in expidited mode |
|
* |
Can only handle short images | ||
|
* |
Requires vslung, vemph, vdetect, and vsairw (unless -tr is specified). |
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SEE ALSO--
vemph, vslung, vsairw, vdetect
Benjamin Stein, Fall 2001 Brad Keller, Spring 2007