Force quantification and simulation of pedicle screw tract palpation using direct visuo-haptic volume rendering.

ABSTRACT:

Purpose

We present a feasibility study for the visuo-haptic simulation of pedicle screw tract palpation in virtual reality, using an approach that requires no manual processing or segmentation of the volumetric medical data set.

Methods

In a first experiment, we quantified the forces and torques present during the palpation of a pedicle screw tract in a real boar vertebra. We equipped a ball-tipped pedicle probe with a 6-axis force/torque sensor and a motion capture marker cluster. We simultaneously recorded the pose of the probe relative to the vertebra and measured the generated forces and torques during palpation. This allowed us replaying the recorded palpation movements in our simulator and to fine-tune the haptic rendering to approximate the measured forces and torques

SUBMITTER: Zoller EI 

PROVIDER: S-EPMC7603448 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature