A compact laser beam guidance system for interventional CT.
OBJECTIVE
We propose a simple, compact, and accurate light guidance system for interventional CT.


METHODS
The system using intersecting laser beams is mounted on the CT gantry and ensures precise needle guidance even when the gantry is tilted. The device does not require additional software/hardware.


RESULTS
Phantom simulations and clinical experiments have demonstrated an accuracy of +/- 1 degrees and +/- 1 mm.


CONCLUSIONS
The laser guidance system for CT makes the intervention safer, faster, and more accurate.
Gangi
A
A
Department of Radiology B, University Hospital of Strasbourg, France.
Kastler
B
B
Arhan
J M
JM
Klinkert
A
A
Grampp
J M
JM
Dietemann
J L
JL
D001707:Biopsy, Needle / Q000295:instrumentation / Q000379:methods; D004867:Equipment Design; D006801:Humans; D007834:Lasers; D008961:Models, Structural; D015641:Radiography, Interventional / Q000295:instrumentation / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods*