Using a priori data for segmentation anatomical structures of the brain

Аврунін, Олег; Tymokhovyvh, M. Y.; Moskovko, S. S.; Romanyuk, Sergii O.; Kotyra, Andrzej; Smailova, Saule

doi:10.15199/48.2017.05.20

Cited by 23 publications

(19 citation statements)

References 10 publications

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“…Initially, the images are stored in DICOM format [ 10 , 11 , 21 ], converted using the standard utility DICOM_IMAGE in raster format BMP (Windows bitmap) with a size of 512 × 512 (x × y) and eight-bit representation of intensity levels. Preliminary processing of tomographic images was performed by the method of median filtration [ 22 , 23 ] to eliminate possible interference in the form of pulsed noise. We used methods of digital filtering, image segmentation and analysis, fluid dynamics, and statistical and discriminant analysis [ 24 , 25 , 26 , 27 , 28 , 29 , 30 ].…”

Section: Methodsmentioning

confidence: 99%

Possibilities of Automated Diagnostics of Odontogenic Sinusitis According to the Computer Tomography Data

Аврунін

Nosova

Abdelhamid

et al. 2021

Sensors

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Individual anatomical features of the paranasal sinuses and dentoalveolar system, the complexity of physiological and pathophysiological processes in this area, and the absence of actual standards of the norm and typical pathologies lead to the fact that differential diagnosis and assessment of the severity of the course of odontogenic sinusitis significantly depend on the measurement methods of significant indicators and have significant variability. Therefore, an urgent task is to expand the diagnostic capabilities of existing research methods, study the significance of the measured indicators, and substantiate the expediency of their use in the diagnosis of specific pathologies in an automated mode. Methods of digital filtering, image segmentation and analysis, fluid dynamics, and statistical and discriminant analysis were used. Preliminary differential diagnosis of odontogenic sinusitis can be performed by densitemetric analysis of tomographic images of the maxillary sinuses, performed using frontal multiplanar reconstructions according to a given algorithm. The very manifestation of the characteristic changes in the densitography of the maxillary sinus allows for the initiation of certain pathological processes and permits the development of the effectiveness of the diagnosis of the pathology of the sinus sinuses, which can be realized automatically in real life.

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Section: Methodsmentioning

confidence: 99%

Possibilities of Automated Diagnostics of Odontogenic Sinusitis According to the Computer Tomography Data

Аврунін

Nosova

Abdelhamid

et al. 2021

Sensors

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“…The method by which it is possible to study the configuration of the structures of the nasal cavity quite comprehensively is X-ray computed tomography [12][13][14]31,[46][47][48][49][50][51][52]. The method allows for visualizing both bone structures and soft tissues and to segment the airways [7,12,31] by digital tomographic image processing [31,[49][50][51][52].…”

Section: Analysis Of Existing Methods Of Nasal Breathing Researchmentioning

confidence: 99%

Research Active Posterior Rhinomanometry Tomography Method for Nasal Breathing Determining Violations

Аврунін

Nosova

Abdelhamid

et al. 2021

Sensors

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This study analyzes the existing methods for studying nasal breathing. The aspects of verifying the results of rhinomanometric diagnostics according to the data of spiral computed tomography are considered, and the methodological features of dynamic posterior active rhinomanometry and the main indicators of respiration are also analyzed. The possibilities of testing respiratory olfactory disorders are considered, the analysis of errors in rhinomanometric measurements is carried out. In the conclusions, practical recommendations are given that have been developed for the design and operation of tools for functional diagnostics of nasal breathing disorders. It is advisable, according to the data of dynamic rhinomanometry, to assess the functioning of the nasal valve by the shape of the air flow rate signals during forced breathing and the structures of the soft palate by the residual nasopharyngeal pressure drop. It is imperative to take into account not only the maximum coefficient of aerodynamic nose drag, but also the values of the pressure drop and air flow rate in the area of transition to the turbulent quadratic flow regime. From the point of view of the physiology of the nasal response, it is necessary to look at the dynamic change to the current mode, given the hour of the forced response, so that it will ensure the maximum possible acidity in the legend. When planning functional rhinosurgical operations, it is necessary to apply the calculation method using computed tomography, which makes it possible to predict the functional result of surgery.

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“…Owing to the use of technical and IT solutions, the correct assessment of patients' condition is better than ever. Various imaging diagnostics techniques allow method to be adapted to character of the examined objects [1,5,12].…”

Section: Introductionmentioning

confidence: 99%

“…The test results usually involve more structures than are evaluated. Therefore, it is necessary to isolate the area of interest in order to adapt further methods of image analysis appropriate to the studied area [1,11].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Effectiveness of Selected Segmentation Methods of Anatomical Brain Structures

Dzierżak

Michalska

2018

IAPGOŚ

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An important aspect of analysis medical images is acknowledging the role of the segmentation process of individual anatomical structures. This process allows to show the most important diagnostic details. Owing to the segmentation the areas of interest (ROI) it is possible to adapt the methods of further image analysis considering the specification of selected elements. This process has been widely used in medical diagnostics. The article presents the use of segmentation by thresholding, segmentation by region growth and by edge detection to extract the parts of the human brain the user is interested in. The series of MRI (magnetic resonance imaging) images were used. The aim of the research was to develop the methods that would allow comparing the effectiveness various types of anatomical brain structures’ segmentation in two dimensions. The above methods present the different impact that selected types of segmentation, masks or parameters have on the most accurate depiction of a selected human brain element.

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Using a priori data for segmentation anatomical structures of the brain

Cited by 23 publications

References 10 publications

Possibilities of Automated Diagnostics of Odontogenic Sinusitis According to the Computer Tomography Data

Possibilities of Automated Diagnostics of Odontogenic Sinusitis According to the Computer Tomography Data

Research Active Posterior Rhinomanometry Tomography Method for Nasal Breathing Determining Violations

Analysis of the Effectiveness of Selected Segmentation Methods of Anatomical Brain Structures

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