Abstract
PurposeThe aim of this study was to analyse the radiation dose and quickness of needle interventions using a Laser Navigation System (LNS-group) compared with conventional method (control-group). Materials and methodsIn this prospective, randomized, comparative study 58 patients (19 females, 39 males; mean age, 62.9 years) were punctured either with LNS (n=29) or with conventional method with a skin mark of the puncture site (n=29). In the LNS method the puncture site was marked with laser without additional CT. Thoracic and abdominal intervention was performed in 30 and 28 patients, respectively. Radiation dose and time of the procedures were analysed. Statistical significance was calculated according to the Mann–Whitney-U-test. ResultsMean target access path in the patients of the LNS group was 6.0cm (range, 3.0–10.1cm) and in the control group 6.0cm (range, 1.0–10.3cm). Time duration of complete intervention in the LNS group was 20:25min (range, 07:00–34:00min) and in the control group 28:00min (range, 13:00–51:00min). The dose-length-product (DLP) of intervention scan of the LNS group was 42.3mGycm (range, 10–125mGycm), and of the control group 59.7mGycm (range, 25–176.42mGycm). ConclusionUsing the LNS for CT-guided interventions results in faster intervention time with a lower dose.
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