Details

Autor(en) / Beteiligte

• Pérez-Escamirosa, Fernando
• Oropesa, Ignacio
• Sánchez-González, Patricia
• Tapia-Jurado, Jesús
• Ruiz-Lizarraga, Jorge
• Minor-Martínez, Arturo

Titel

Orthogonal cameras system for tracking of laparoscopic instruments in training environments

Ist Teil von

• Cirugia y cirujanos, 2018-11, Vol.86 (6), p.548

Ort / Verlag

Mexico

Erscheinungsjahr

2018

Quelle

MEDLINE

Beschreibungen/Notizen

• Motion analysis is a valuable tool for assessment of psychomotor skills in laparoscopy. Nonetheless, it requires technologies for tracking the activity of the laparoscopic instruments during training. This paper presents a sensor-free system to track the movements of laparoscopic instruments based on an orthogonal camera system and video image processing. The movements of the laparoscopic instruments are tracked with two webcams placed in an orthogonal configuration. The position and orientation in the three-dimensional workspace are obtained using color markers placed on the tip of the instruments. Accuracy tests show a resolution of 0.14 mm for displacement, with 1694 cm of total workspace, and 0.54° in the angular movements. Mean relative errors of the tracking system were <1%. The orthogonal cameras show high precision, linearity, and repeatability of motion recording of the laparoscopic instruments. The proposed system offers unconstrained manipulation of the instruments and a low-cost alternative for traditional tracking technologies.