Computed tomography dataset analysis for stereotaxic neurosurgery navigation

Аврунін, Олег; Tymkovych, Maksym; Semenets, Valerii; Piatykop, V.

doi:10.1109/caol46282.2019.9019459

Cited by 8 publications

(6 citation statements)

References 9 publications

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“…In traditional neurosurgery for brain tissue, craniotomy is usually performed using wire-guided, mechanically controlled surgical instruments with stereotactic devices [1][2][3][4][5]. The limitation of this method is that the surgical instruments can only move along a straight trajectory, resulting in limited surgical access, great trauma to the tissues around the movement path, and inability to enter the deep structure of brain tissue, which cannot effectively treat brainstem tumors and some extrapyramidal nerve diseases.…”

Section: Magnetic Stereotaxis Systemmentioning

confidence: 99%

Feasibility analysis of implant movement along arc trajectory under non-contact control in magnetic stereotaxic system

Hunkun,

Avrunin

2023

ITSSI

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In this paper, the non-contact control of magnetic implants by changing the external magnetic field in the magnetic stereotaxic system is introduced, and the feasibility of making them move along the arc trajectory is analyzed. Through COMSOL software, the process of moving the miniature magnetic implant along the arc trajectory was simulated, the change of the micro-magnetic implant trajectory after the external magnetic field was changed, the relative position relationship between the large permanent magnets was determined, and the mechanical analysis of the miniature magnetic implant moving along the arc trajectory was carried out. In this experiment, we fix a large permanent magnet, only move the second permanent magnet, first, observe the process of small permanent magnets moving along a straight trajectory, determine the position of the large permanent magnet magnetic field when it contacts the small permanent magnet, and then, analyze the force of the small permanent magnet through the force calculation module, and determine the relative position relationship between the two large permanent magnets by comparing and , and when the small permanent magnet will start to move along the arc trajectory. Then, according to the previous data, we move two adjacent large permanent magnets at the same time at a certain interval, record the movement trajectory of the small magnet, Finally, with the force calculation module of the COMSOL software, force analysis of small permanent magnets moving along arc trajectories. The data from this experiment will be used to determine the relative position relationship between two large permanent magnets adjacent to each other during the actual experiment, and under what conditions the small permanent magnets will move along the arc trajectory. The purpose of this experiment is to provide theoretical and data support for the subsequent practical experiments of the magnetic stereotactic system, and all parameters in the COMSOL software are derived from the actual measurement data, so as to improve the reliability of the simulation results.

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Section: Magnetic Stereotaxis Systemmentioning

confidence: 99%

Feasibility analysis of implant movement along arc trajectory under non-contact control in magnetic stereotaxic system

Hunkun,

Avrunin

2023

ITSSI

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“…The threshold 210  T was chosen for binarization of the tooth root image. Given the resolution, filtering with the removal of segments with less than 1500 pixels was used to exclude binarization artifacts [13,14]. X-ray images always contain small details and noise that often interfere with the analysis process.…”

Section:  mentioning

confidence: 99%

Comparison of the Method of Electrometric Determination of Root Canal Parameters and the Method of Threshold Segmentation of Radiographs

Perepelytsia

Аврунін

2022

ITSSI

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The subject matter of the article is X-ray images of teeth during endodontic operations. The goal of the work is to compare the developed method of segmentation of the radiograph to determine the length of the root canal with the electrometric and mathematical methods in practice. The article uses the following methods: principles of endodontic preparation of teeth; methods of determining the working length of the root canal (radiological, electrometric); threshold segmentation method; method of segmentation of bone structures on tomographic images. The following results were obtained: the existing methods of determining the working length of the root canal were analyzed, the main advantages and disadvantages of each method were highlighted. The mathematical method is fast, but inaccurate and can only serve as a preliminary estimate. Electrometric is the most accurate, but has very strict requirements for measurement in the area of canal moisture, as well as invasiveness of the method has a number of disadvantages. Radiological is the most promising for research because of its painlessness to the patient, low radiation dose during intraoral radiography and the possibility of using image processing algorithms to refine the measurement results. This work formulated principles for segmentation and extraction of tooth contours on the X-ray image to determine working length and conducted practical studies to compare all methods of analysis. Conclusions. The application of the electrometric length determination method gives the most accurate result, but the segmentation of the radiograph allows the doctor to obtain additional information about the architectonics of the root canal. As well as the possibility of using image processing such as segmentation, contour extraction and automatic determination of the apical constriction zone make this method the most perspective. The most optimal is the combination of these two methods in practice, which requires additional research.

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“…In high-precision neurosurgical interventions for the treatment of brain tumors and other neurological diseases, stereotaxic devices have traditionally been used to mechanically control the movement of surgical instruments along a straight trajectory 4,5,6 . The disadvantages of this method are that surgical access is limited, it is difficult to enter the deep structure of the brain tissue, and it is highly invasive to the surrounding tissues under multiple guidance.…”

Section: Introductionmentioning

confidence: 99%

Optical control system of the geometric model constructed in 3D space for magnetic stereotaxis

Hankun,

Avrunin,

Piatykop

et al. 2023

Optical Fibers and Their Applications 2023

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This paper studies the feasibility of reciprocating motion of non-contact control implants (small permanent magnets) by simulating a magnetic stereotaxic system using COMSOL software. The experimental results are consistent with the simulation results. When the large permanent magnet (LPM) on one side is approached, it will attract the small permanent magnet (SPM) to move towards the barrel wall, and when it leaves, the small permanent magnet stays at the barrel wall. At this time, the large permanent magnet on the other side begins to approach. When a certain distance is reached, the small permanent magnet is attracted by it, moves from one side of the barrel wall to the other side, and stays on the barrel wall after arrival.

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Computed tomography dataset analysis for stereotaxic neurosurgery navigation

Cited by 8 publications

References 9 publications

Feasibility analysis of implant movement along arc trajectory under non-contact control in magnetic stereotaxic system

Feasibility analysis of implant movement along arc trajectory under non-contact control in magnetic stereotaxic system

Comparison of the Method of Electrometric Determination of Root Canal Parameters and the Method of Threshold Segmentation of Radiographs

Optical control system of the geometric model constructed in 3D space for magnetic stereotaxis

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