[Initial experiences with a new optical target system (SimpliCT) for CT-guided punctures].
OBJECTIVE
To evaluate the prototype of a new optical target device for CT-guided punctures and interventions.


METHODS
An optical target device for CT-guided punctures was applied in 24 interventions. The system consists of a laser target device mounted on a stand. The biopsy needle is adjusted according the course of a laser beam. The target angle has to be adjusted on the laser unit. The laser carrier can be moved along an 90 degrees-angled rail, allowing punctures from any angle in plane. Furthermore, angulation in the z-plane is possible, supporting interventions with gantry tilt. Size and depth of the target lesions, the planned and the actual angle of the inserted needle, the numbers of corrections of the needle position, and the time required for the puncture were evaluated. The user rated the benefit of the system and the ease of the application.


RESULTS
All 24 interventions were carried out successfully. The mean difference between the planned and the actual angle of the needle was 1.3 degrees (SD: 0.7 degree). The system was considered as easy to handle and as a valuable aid.


CONCLUSIONS
The laser target device is a simple navigation system which allows accurate positioning of a needle. Requiring an acceptable low preparation time, it easily can be integrated into the procedure.
Klinik für Radiologische Diagnostik, Universitätsklinikum der RWTH Aachen. krombach@rad.rwth-aachen.de
G A
GA
Krombach
T
T
Schmitz-Rode
K
K
Brabrand
J
J
Meyer
J E
JE
Wildberger
B B
BB
Wein
R W
RW
Günther
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001707:Biopsy, Needle / Q000295:instrumentation / Q000379:methods*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007834:Lasers; D008297:Male; D008875:Middle Aged; D009339:Needles; D055095:Optics and Photonics / Q000295:instrumentation*; D015641:Radiography, Interventional / Q000295:instrumentation*; D014057:Tomography, X-Ray Computed / Q000295:instrumentation*