TITLE

Utilizare inovatoare a senzorilor de orientare cu posibilă aplicaţie în proceduri urologice laparoscopice sau percutanate care implică terapia focală

AUTHOR(S)
Petrufl, B.; Hogea, M.; Feflea, D.; Schiţcu, V.
PUB. DATE
October 2012
SOURCE
Romanian Journal of Urology;2012, Vol. 11 Issue 4, p35
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Introduction: Attitude tracking is a method for orientation estimation using sensors. Recent technical developments, coupled with increased sensitivity and lower costs, make for an attractive solution for problems current in medical situations. This paper serves as a proof of concept that attitude tracking can aid in the guidance of specific diagnostic or treatment procedures, as well as proposing a sensing device. An experimental model was designed for assessment and comparison with a control. Materials and method: The sensing device allows the selection of 2 given angles of inclination and indicates the bisectrix. Coupled with an ultrasound probe, it helps determine the exact angled plane at which a centered puncture should be realized. The experimental model consisted of several symmetric objects suspended in gelatin. The device, coupled with the ultrasound probe and a needle guide, were handled by an experienced surgeon. The needle was aimed at the center of the objects, with and without attitude aid. The distance from needle tip to geometric centre was recorded, as was procedure duration. A paired student t-test was performed. Results: 40 punctures were performed. In orientation-aided cases, mean distance from centre was 1.0mm, standard deviation 0.743mm, puncture time 7.2s. In the control, the mean distance from centre was 3.20mm, standard deviation 2.38mm, average puncture time 5.3s. P-value was <0.001. Conclusions: Attitude tracking is a promising direction for improving ultrasound guided diagnostic or therapeutic procedures' precision. Our device successfully improved the results of an experienced surgeon, at the small cost of increased procedure time.
ACCESSION #
87600128

 

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