Ahmad Ghasemloonia

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Surgical training is evolving from an observership model towards a new paradigm that includes virtual-reality (VR) simulation. In otolaryngology, temporal bone dissection has become intimately linked with VR simulation as the complexity of anatomy demands a high level of surgeon aptitude and confidence. While an adequate 3D visualization of the surgical(More)
To establish the design requirements for an MR-compatible haptic hand-controller, this paper measures magnitudes and frequency bands of three mechanical motion and interaction components during the performance of neurosurgical tasks on a cadaveric brain. The hand-controller would allow the performance of virtual neurosurgical tasks within the bore of a high(More)
OBJECTIVES This article presents a quantitative technique to assess motion quality and smoothness during the performance of micromanipulation tasks common to surgical maneuvers. The objective is to investigate the effectiveness of the jerk index, a derivative of acceleration with respect to time, as a kinetostatic measure for assessment of surgical(More)
The contact behavior of drillstring and wellbore is of great concern to drilling companies in the oil and mineral exploration industries. Due to the nonlinear, random motion of the drillstring in contact with the wellbore, it is difficult to predict the response of the drillstring. Successive contacts of wellbore and drillstring will result in fatigue(More)
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