Calibration of the Magnetic Tracker for Acquisition of 3d Images to Guide Neurosurgeries

Bosnjak, Antonio; Carmona, Rhadamés; Ríos, Lisandro de los; Montilla, G.; Jara, I.

doi:10.1007/978-3-642-03906-5_7

Cited by 2 publications

(3 citation statements)

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“…The first ones are used as markers, ten of them are used as reference and the other ones for the precision evaluation. These points are acquired with a special tool adapted to the Electromagnetic Tracker System MiniBird® 500, which was previously calibrated with the pivot method described by Bosnjak et al [5]. The figure 2(b) shows eight blue points that correspond to set P, and eight red points that correspond to set X, the other two points are behind the cube.…”

Section: A Registration and Calibration Of One Cubementioning

confidence: 99%

“…This process repeats for all the points in P, so that, for each point Pi, the closest point Xj of the set X. should be found. We constructed the set Y with the closest points; this process is denoted by the operator C: y = C (P,X) (5) Having evaluated the correspondence between the two point sets, the ICP algorithm proceeds to the evaluation of the translation and rotation parameters for the optimum registration of the two sets Y, X, using the quatemion-based method. Quatemions are a means of representing 3D rotations.…”

Section: Data Set Registrationmentioning

confidence: 99%

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An Electromagnetic Tracking System for Surgical Navigation with registration of fiducial markers using the iterative closest point algorithm

Bosnjak

Montilla

Villegas

et al. 2010

Proceedings of the 10th IEEE International Conference on Information Technology and Applications in Biomedicine

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During a minimal invasive neurosurgery it is necessary to know precisely the 3D position of the surgical instruments and their relationship and interaction with the anatomy of the human brain. Today, on developing countries many surgeons still operate without 3D visual aids, managing instruments in the blind. With this idea we developed a new technique of Computer Assisted Surgery (CAS). We developed a new neuronavigator called Neuropanacea. It consists of our image processing software, the electromagnetic tracker for the localization of each one of the surgical instruments in the surgical room, and a personal computer (PC). The procedure for registration of these points captured using an electromagnetic tracker with the 3D space coordinates of the volume might be too complex. The main problem consists on finding the geometrical homogeneous transform to apply it to the acquired points with the electromagnetic tracker, and the registration of the fiducial markers visualized on the 3D volume. If we have the sorted correspondence of each one of the points in both systems, it is always possible to find a homogeneous transform into another system. However, in most of these cases we do not have this orderly set. One method to solve this problem is the iterative closest point (ICP). This work refers to the original algorithm of ICP. From thisimplementation we proposed two improvements for its correct convergence. The mean square error using the original algorithm was reduced from 2.1 ± 0.5 mm, to less than 0.5 mm.

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Section: A Registration and Calibration Of One Cubementioning

confidence: 99%

Section: Data Set Registrationmentioning

confidence: 99%

An Electromagnetic Tracking System for Surgical Navigation with registration of fiducial markers using the iterative closest point algorithm

Bosnjak

Montilla

Villegas

et al. 2010

Proceedings of the 10th IEEE International Conference on Information Technology and Applications in Biomedicine

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show abstract

“…In spite of having good multi wavelength coverage, INTEGRAL GRBs can be studied in detail from the spectral point of view, due to the high combined sensitivity of IBIS and SPI [8] over the 20 keV to 2 MeV energy range. In order to investigate the spectral properties of the whole INTEGRAL sample, Bošnjak et al [9] have reanalysed all publicly available IBIS/ISGRI and SPI data with an ad-hoc developed software. The combined analysis shows that the INTEGRAL bursts are on average fainter and softer (i.e.…”

Section: Global Propertiesmentioning

confidence: 99%

INTEGRAL Results on Gamma-Ray Bursts

Götz¹

2013

Proceedings of an INTEGRAL View of the High-Energy Sky (The First 10 Years) - 9th INTEGRAL Workshop and Celebration of the 10t

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Despite being a general observatory, and not a Gamma-Ray Bursts (GRBs) oriented mission, INTEGRAL has contributed to several important discoveries in the GRB field. This has been obtained thanks to its unprecedented localization capabilities, and sensitivity in the soft gamma-ray domain.In this paper I will review the main results obtained during the last 10 years with, and thanks to, INTEGRAL GRBs, including the discovery of one of the few GRBs spectroscopically associated with a Supernova, the first measurement of variable polarization in the GRB prompt emission, the indication of the existence of a low-luminosity population of GRBs, as well as the recent application of GRBs as probes for the fundamental physics. I will mention the main global characteristics of the INTEGRAL sample, and make the point on the lessons learnt from INTEGRAL in the perspective of designing future GRB dedicated missions.An INTEGRAL view of the high-energy sky (the first 10 years) -9th INTEGRAL Workshop and celebration of the 10th anniversary of the launch 15-

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Calibration of the Magnetic Tracker for Acquisition of 3d Images to Guide Neurosurgeries

Cited by 2 publications

References 1 publication

An Electromagnetic Tracking System for Surgical Navigation with registration of fiducial markers using the iterative closest point algorithm

An Electromagnetic Tracking System for Surgical Navigation with registration of fiducial markers using the iterative closest point algorithm

INTEGRAL Results on Gamma-Ray Bursts

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