黑料不打烊

Baigiamajame magistro darbe yra analizuojama jud臈jimo baim臈s faktoriaus 寞taka tiriam懦j懦 eisenos biomechaniniams parametrams. Darbe atlikta aktualiausios literat奴ros, susijusios su kinezifobijos bei kit懦 baimi懦 tyrimais, analiz臈 bei buvo parinkta eksperimentin臈 metodologija darbe atliekamam tyrimui. Pasitelkiant judesio analiz臈s ir virtualios realyb臈s technologijas buvo i拧tirta 20 dalyvi懦 eisenos biomechanika esant dviem s膮lygoms: kontrolinei, kai tiriamasis eina 寞prastu b奴du, bei eksperimentinei, kai pasitelkiant virtuali膮 realyb臋 tiriamajam yra sukeliama su judesiu susijusi baim臈. Eksperimento b奴du surikti judesio kinematiniai ir dinaminiai parametrai, atlikta j懦 lyginamoji analiz臈. Gauti rezultatai atskleid啪ia, jog baim臈s veiksni懦 poveikis jud臈jimui gali b奴ti 寞vertintas pagal kelis biomechaninius markerius 鈥� vertikali膮j膮 atramos reakcijos j臈g膮, k奴no mas臈s centro ir liemens segment懦 amplitudes 鈥� kurie pasirod臈 esantys statisti拧kai reik拧mingi (p < 0,05). Darb膮 sudaro 7 dalys: 寞vadas, literat奴ros ap啪valga, tyrimo metodika, tyrimo rezultatai, diskusija, i拧vados ir literat奴ros s膮ra拧as. Darbo apimtis 鈥� 68 p. teksto be pried懦, 35 paveiksl懦, 12 lenteli懦, 49 literat奴ros 拧altiniai. Atskirai pateikiami darbo priedai.

The master鈥檚 thesis analyzes the impact of the kinesiophobia factor on the biomechanical parameters of the participants' gait. The thesis includes an analysis of the most relevant literature related to the study of kinesiophobia and other fears, as well as the selection of experimental methodology for the study. The biomechanics of gait of 20 participants were investigated using motion analysis and virtual reality technologies under two conditions: a control condition, where the subject walks in a normal way, and an experimental condition, where the subject is exposed to a movement-related fear using virtual reality. Experimentally, the kinematic and dynamic parameters of the movement were obtained and a comparative analysis was performed. The results show that the effect of fear factors on movement can be assessed by several biomechanical markers, such as the vertical support reaction force, the amplitudes of the center of mass and the trunk segments, which proved to be statistically significant (p < 0.05). The thesis consists of 7 parts: introduction, literature review, research methodology, research results, discussion, conclusions, and references. The thesis comprises 68 pages of text excluding appendices, 35 figures, 12 tables, and 49 literature sources. The appendices are presented separately.

Baigiamajame bakalauro darbe suprojektuotas animatronin臈s pap奴gos persona啪as, kuris gali b奴ti skirtas pramog懦 industrijai arba reabilitacijoje socialiniams 寞g奴d啪iams palaikyti. Atlikta pana拧i懦 sistem懦 analog懦 analiz臈. Suprojektuota mechanin臈 strukt奴ra ir sudaryti valdymo algoritmai, u啪tikrinantys nat奴raliai atrodan膷ius judesius bei emocines reakcijas. Ra拧to darbe nagrin臈jami konstrukcijos ir gamybos metodai, apskai膷iuojami reikalingi varikliai, atliekami konstrukcijos stipruminiai skai膷iavimai, parenkamos gamybos med啪iagos, jutikliai ir judesio valdymo priemon臈s. Apra拧yta kinematin臈 schema ir konstrukcijos valdymas. Apra拧yti pagrindiniai sistemos darbo saugos reikalavimai ir atlikti ekonomini懦 rodikli懦 skai膷iavimai, kuriais remiantis sudarytos grafin臈s schemos. Pateiktos i拧vados. Darb膮 sudaro 8 dalys: 寞vadas, teorin臈 dalis, konstrukcin臈 dalis, pasirinktos detal臈s technologinis mar拧rutas, sistemos saugos reikalavimai, ekonominiai rodikliai ir j懦 skai膷iavimai, i拧vados ir literat奴ros 拧altiniai. Darbo apimtis 鈥� 78 psl. be pried懦, 63 paveikslai, 33 lenteli懦, 29 bibliografiniai 拧altiniai. Atskirai pridedami darbo priedai 4 A1 formato br臈啪iniai, kuriuos sudaro: bendro vaizdo br臈啪inys (A1), surinkimo br臈啪inys (A1), pasirinktos detal臈s technologinis mar拧rutas (A1), sistemos kinematin臈 schema ir valdymo schema (A1).

In the final bachelor's thesis, an animatronic parrot character was designed, which can be used in the entertainment industry or in rehabilitation to support social skills. An analysis of analogues of similar systems was performed. A mechanical structure and algorithms were designed to ensure natural-looking movements and emotional reactions. The thesis discusses the design and manufacturing methods, calculates the required actuators, performs structural strength analysis, and selects appropriate manufacturing materials, sensors, and motion control components. The kinematic and system control diagrams are described in detail. The main safety requirements of the system are identified and economic indicators are calculated. The conclusions are presented at the end of the work. Scope of work 鈥� 78 pages. without appendices, 63 figures, 33 tables, 29 bibliographic sources. Work attachments - 4 A1 format drawings are attached separately, which include: general view drawing (A1), assembly drawing (A1), technological route of a selected part (A1), system kinematic diagram and control diagram (A1).

Baigiamajame magistro darbe analizuojami vaik懦 eisenos b奴dingieji atramos reakcijos j臈gos (ARJ) parametrai, i拧skiriant skirtumus tarp sveik懦 vaik懦 ir sergan膷i懦 cerebriniu paraly啪iumi (CP). Tyrime taikyta originali ARJ duomen懦 apdorojimo metodika, sukurta MATLAB aplinkoje, kuri leido efektyviai 寞vertinti ir palyginti sveik懦 vaik懦 bei CP sergan膷i懦 vaik懦 eisenos ypatumus. Darbe 寞vertinti skirting懦 CP tip懦 (hemiplegijos ir diplegijos GMFCS 1 bei GMFCS 2 lygio) vaik懦 atramos reakcijos j臈g懦 parametrai 鈥� j臈gos pikai, impulsai ir atramos faz臈s laiko parametrai. Rezultatai atskleid臈 ai拧kius ir statisti拧kai reik拧mingus skirtumus tarp sveik懦 ir cerebriniu paraly啪iumi sergan膷i懦 vaik懦, kurie atspindi sutrikusi膮 motorin臋 kontrol臋, suma啪臈jus寞 stabilum膮 ir specifines kompensacines eisenos strategijas, b奴dingas CP sergantiems vaikams. Darbo rezultatai gali b奴ti naudingi klinikinei praktikai, siekiant tiksliau diagnozuoti eisenos sutrikimus ir efektyviai taikyti gydymo metodus. Darbo apimtis 鈥� 67 p. teksto be pried懦, 29 paveikslai, 4 lentel臈s, 74 literat奴ros 拧altiniai. Atskirai pridedami darbo priedai.

The final Master's thesis analyses the gait-specific parameters of the ground reaction forces (GRF) in children, highlighting differences between healthy children and children with cerebral palsy (CP). The study used an original GRF data processing methodology developed in MATLAB environment, which allowed to efficiently assess and compare the gait characteristics of healthy children and children with CP. In the work, the parameters of the ground reaction forces - force peaks, impulses and support phase time parameters - were evaluated in children with different types of CP (hemiplegic and diplegic GMFCS level 1 and GMFCS level 2). The results revealed clear and statistically significant differences between healthy children and children with cerebral palsy, reflecting the impaired motor control, reduced stability and specific compensatory gait strategies characteristic of children with CP. The results of this work may be useful for clinical practice in order to more accurately diagnose gait disorders and to effectively apply treatment methods. The thesis consists of 67 pages of text without appendices, 29 figures, 4 tables, 74 references. Appendices are attached separately.

Baigiamajame bakalauro darbe suprojektuotas prie vaiko augimo adaptuojamas vir拧utini懦 gal奴ni懦 protezas su plo膷io ir ilgio reguliavimo mechanizmu. Atlikus aktuali懦 patent懦 ir analog懦 analiz臋 bei i拧nagrin臈jus mokslinius 拧altinius, i拧skirti j懦 tr奴kumai ir privalumai, suformuota vizija projektuojamas protezui ir parinktos reikalavimus atitinkan膷ios med啪iagos. Naudojantis 鈥濻olidWorks鈥� programiniu paketu, suprojektuotas protezo modelis, atlikti statiniai bandymai pla拧takai ir pir拧tui, taikant dvi skirtingas med啪iagas 鈥� ABS ir PLA plastik膮. Taip pat atlikta temperat奴rin臈 bei nuovargio analiz臈. Sudarytas atsakingos protezo detal臈s technologinis mar拧rutas ir apskai膷iuotas bendras ma拧ininio apdirbimo laikas. Parengtas saugos reikalavim懦 s膮ra拧as. Ekonomin臈je dalyje 寞vertinti pagrindiniai ekonominiai rodikliai ir apskai膷iuotas atsiperkamumas. Sudaryti 4 A1 formato br臈啪iniai: protezo surinkimo, detaliruot臈s, 寞tempto b奴vio diagramos ir technologinis br臈啪iniai. Baigiam膮j寞 darb膮 sudaro 8 skyriai: 寞vadas, teorin臈 dalis, konstrukcin臈 dalis, technologin臈 dalis, saugos reikalavimai, ekonomin臈 dalis, i拧vados ir literat奴ros s膮ra拧as. Darbo apimtis 鈥� 62 puslapiai be pried懦, 34 iliustracijos, 18 lenteli懦, 33 bibliografiniai 拧altiniai.

In the final bachelor鈥檚 thesis, an upper limb prosthesis adaptable to child growth was designed, featuring both width and length adjustment mechanisms. Following the analysis of a relevant patent, existing prosthetic designs, and scientific literature, the key advantages and shortcomings of current solutions were identified, leading to the development of a design concept and the selection of suitable materials. Using the SolidWorks software package, a 3D model of the prosthesis was created, and static tests were performed on the hand and finger components using two different materials 鈥� ABS and PLA plastic. In addition, thermal and fatigue analyses were conducted. A technological process plan was developed for the critical prosthesis component, and the total machining time was calculated. A safety requirements list was also compiled. The economic section includes an assessment of key economic indicators and a break-even analysis. Four A1 format drawings were prepared: an assembly drawing, a detailed part drawing, a stress diagram, and a technological drawing. The final thesis consists of eight chapters: introduction, theoretical part, design part, technological part, safety requirements, economic part, conclusions, and references. The thesis comprises 62 pages (excluding appendices), 34 illustrations, 18 tables, 33 bibliographic sources.

Smulkioji motorika 鈥� tai geb臈jimas tiksliai ir koordinuotai valdyti smulkius raumenis, da啪niausiai esan膷ius pir拧tuose, delnuose ir rie拧uose. 艩i funkcija svarbi kasdienei veiklai, pavyzd啪iui, ra拧ymui, sag懦 segimui ar 寞ranki懦 naudojimui. Jai b奴dingi tokie komponentai, kaip pir拧t懦 miklumas, rank懦 bei aki懦-rank懦 koordinacija. Tyrime siekta 寞vertinti smulkiosios motorikos funkcinius poky膷ius naudojant raumen懦 nuovargio analiz臋 kaip objektyv懦 vertinimo metod膮. Tyrimui buvo naudota pavir拧in臈s elektromiografijos (sEMG) signalus registruojanti MYO Armband apyrank臈, interaktyvios reabilitacijos sistema E-link bei dinamometras. Dalyviai atliko u啪duotis esant 20 % ir 60 % maksimalios suspaudimo j臈gos (MVC) s膮lygoms 鈥� pagal jas individualiai buvo taikomos pasikartojan膷ios statin臈s, ilgalaik臈s statin臈s ir dinamin臈s raumen懦 apkrovos. Eksperimenti拧kai nustatyta, kad did臈jant raumen懦 nuovargiui, elektromiografini懦 (EMG) signal懦 da啪nio mediana (MDF) ir vidurkis (MNF) reik拧mingai ma啪臈jo (p < 0,05), o nuovargio indeksas (MFL) did臈jo nuo 0 iki 1. Reik拧mingi poky膷iai taip pat fiksuoti 4, 7 ir 8 EMG kanaluose, kuri懦 regresijos nuolyd啪iai siek臈 鈥� 0,0043 iki -0,0101 (p < 0,05). Rezultatai leido patikimai identifikuoti kelis svarbius aspektus: motorin臈s kontrol臈s pablog臈jim膮, raumen懦 i拧tverm臈s ribas, funkcinius raumen懦 aktyvumo poky膷ius ir skirting懦 dilbio raumen懦 apkrovos pasiskirstym膮. Labiausiai nuovargio paveikti buvo pir拧t懦 tiesiamasis ir apvalusis nugr臋啪iamasis raumenys. Gauti rezultatai patvirtina, kad raumen懦 nuovargis daro reik拧ming膮 寞tak膮 smulkiosios motorikos funkcijai, o naudojami biomechaniniai indikatoriai (MDF, MNF, MFL bei suspaudimo j臈ga) yra tinkami ir informatyv奴s smulkiosios motorikos b奴klei vertinti esant skirtingoms apkrovos s膮lygoms. Darb膮 sudaro 7 dalys: 寞vadas, literat奴ros ap啪valga, tyrimo metodika, tyrim懦 rezultatai, diskusija, i拧vados, literat奴ros s膮ra拧as. Darbo apimtis 鈥� 74 p. teksto be pried懦, 38 paveikslai, 2 lentel臈s, 43 literat奴ros 拧altiniai. Atskirai pridedami darbo priedai.

Fine motor skills refer to the ability to precisely and coordinately control fine muscles, primarily located in the fingers, palms, and wrists. This function is essential for daily activities such as writing, buttoning, or using tools. It involves components like finger dexterity, hand movement coordination, and eye-hand coordination. The study aimed to evaluate functional changes in fine motor performance using muscle fatigue analysis as an objective assessment method. For the research, the MYO Armband, which records surface electromyography (sEMG) signals, the E-link interactive rehabilitation system, and a dynamometer to measure muscle strength were used. Participants performed tasks under 20 % and 60 % of their maximum voluntary contraction (MVC) force 鈥� based on these levels, they underwent repetitive static, prolonged static, and dynamic muscle loads individually. Experimentally, it was found that as muscle fatigue increased, the median frequency (MDF) and mean frequency (MNF) of electromyographic (EMG) signals significantly decreased (p < 0,05), while the fatigue index (MFL) increased from 0 to 1. Significant changes were also recorded in EMG channels 4, 7 and 8, where regression slopes ranged from -0,0043 to -0,0101 (p < 0,05). These physiological models reliably identified several important aspects: a decline in motor control, muscle endurance limits, functional changes in muscle activity, and distribution of forearm muscle load. The most affected muscles during fatigue were the extensor digitorum and pronator teres. The obtained results confirm that muscle fatigue significantly affects the function of fine motor skills, and the applied biomechanical indicators (MDF, MNF, MFL, grip force) are suitable and informative for assessing the condition of fine motor function under varying load conditions. Thesis consists of 7 parts: introduction, literature review, research methodology, research results, discussion, conclusion, references. Thesis consists of: 74 p. text without appendixes, 38 pictures, 2 tables, 43 bibliographical entries. Appendixes included.

Baigiamajame bakalauro darbe projektuojama donorini懦 kepen懦 perfuzijos sistema, skirta efektyvesniam organ懦 i拧saugojimui prie拧 transplantacij膮. I拧analizuoti 拧iuo metu rinkoje esantys analogai bei j懦 veikimo principai. Atlikti skai膷iavimai ir parinkti standartiniai sistemos komponentai 鈥� siurbliai, oksigenatoriai, temperat奴ros valdymo 寞ranga, jutikliai. Parinktos gamybai reikiamos med啪iagos. Suprojektuota sistema, apimanti du atskirus perfuzijos ciklus vart懦 venai ir kepen懦 arterijai, bei integruota daikt懦 interneto (IoT) sistema, kuri leid啪ia realiu laiku steb臈ti perfuzijos parametrus. Sudaryta kepen懦 kameros gamybos technologija naudojant 寞pur拧kiamo liejimo metod膮. Apra拧yti saugumo reikalavimai ir atlikti ekonomini懦 rodikli懦 skai膷iavimai. Pateikiamos i拧vados. Darbo apimtis 鈥� 61 puslapis, 29 iliustracijos, 18 lenteli懦, 37 literat奴ros 拧altiniai, 4 A1 formato br臈啪iniai. Br臈啪iniai atlikti naudojantis 鈥濻olidWorks鈥� programiniu paketu.

The bachelor's thesis presents the design of a donor liver perfusion system aimed at improving organ preservation prior to transplantation. Existing market analogues and their operating principles are analyzed. Calculations are performed, and standard system components 鈥� pumps, oxygenators, temperature control units, and sensors 鈥� are selected. The required manufacturing materials are chosen. A system is designed featuring two separate perfusion circuits for the portal vein and hepatic artery, along with an integrated internet of things (IoT) system that enables real-time monitoring of perfusion parameters. The production technology of the critical component 鈥� the liver chamber 鈥� is described, using the injection molding method. Safety requirements are outlined and economic indicators are calculated. Conclusions are presented. The thesis consists of 61 pages, 29 illustrations, 18 tables, 37 literature sources and 4 A1 format technical drawings. The drawings were made using the 鈥淪olidWorks鈥� software package.

Baigiamajame bakalauro darbe suprojektuota diabetin臈s p臈dos steb臈senos sistema, skirta laiku identifikuoti 啪aizd懦, op懦 atsiradimo rizik膮 ir pagerinti pacient懦, sergan膷i懦 cukriniu diabetu, gyvenimo kokyb臋. I拧analizuoti rinkoje esantys analogai ir j懦 veikimo principai. Sistemos projektavimui parinkti tinkamiausi sl臈gio, temperat奴ros, dr臈gm臈s jutikliai bei vibracijos variklis, atlikti skai膷iavimai. Suprojektuotas individualus vidpadis, pritaikytas diabetinei p臈dai, su integruota belaid啪io duomen懦 perdavimo sistema, leid啪ian膷ia realiuoju laiku steb臈ti parametrus. Sudarytas vidpad啪io technologinis mar拧rutas, parinkta tinkamiausia gamybos technologija. Pateikti saugos reikalavimai bei naudojimo instrukcija, atlikta ekonomin臈 analiz臈. Darbo apimtis yra 61 puslapis, 32 iliustracijos, 28 lentel臈s, 27 literat奴ros 拧altiniai, 1 A4 ir 4 A1 formato br臈啪iniai. Br臈啪iniai atlikti naudojant 鈥濻olidWorks鈥� programin臋 寞rang膮.

In the final bachelor's thesis, a diabetic foot monitoring system was designed to identify the risk of wounds and ulcers in a timely manner and to improve the quality of life for patients with diabetes. Existing market analogs and their operating principles were analyzed. The most suitable pressure, temperature, and humidity sensors, along with a vibration motor, were selected for system design, and necessary calculations were performed. A customized insole tailored for the diabetic foot was designed, featuring an integrated wireless data transmission system that enables real-time parameter monitoring. A technological process for insole production was developed, and the most appropriate manufacturing technology was selected. Safety requirements and a user manual were provided, and an economic analysis was carried out. The thesis consists of 61 pages, 32 illustrations, 28 tables, 27 references, 1 drawing in A4 format, and 4 drawings in A1 format. The drawings were created using SolidWorks software.

Baigiamajame magistro darbe tiriama intrakranijini懦 aneurizm懦 hemodinamika in silico b奴du. I拧analizuoti pagrindiniai hemodinaminiai parametrai, siejami su aneurizmos ply拧imu: WSS, TAWSS, OSI, RRT, taip pat srauto pasiskirstymas ir spaudimo pasiskirstymas sistol臈je ir diastol臈je. Remiantis 拧iais hemodinaminiais parametrais nustatyta rizika buvo lyginama su geometrine savybe 鈥� kra拧tin臈s santykiu. Tyrimui atlikti buvo naudojami paciento specifiniai kraujo spaudimo duomenys, nuasmeninti DICOM vaizdai, i拧 kuri懦 gautos arterij懦 su aneurizmomis geometrijos naudojant 3D Slicer ir Meshmixer. Nustatytos kra拧tin臈s s膮lygos. 漠tek臈jimui naudotas pulsuojantis grei膷io srautas, i拧tek臈jimui 鈥� sl臈gio bangos forma. Skaitin臈 simuliacija atlikta COMSOL Multiphysics 6.3 programiniu paketu. Gauti rezultatai apibendrinti, diskusijoje palyginti su kitais moksliniais tyrimais, suformuluotos i拧vados. Darb膮 sudaro 7 dalys: 寞vadas, literat奴ros ap啪valga, tyrimo metodika, tyrimo rezultatai, diskusija, i拧vados, literat奴ros s膮ra拧as. Darbo apimtis 鈥� 56 p. teksto be pried懦, 32 paveikslai, 4 lentel臈s, 39 literat奴ros 拧altiniai.

This Master's thesis investigates the hemodynamics of intracranial aneurysms using in silico modeling. The study analyzes key hemodynamic parameters associated with aneurysm rupture: Wall shear stress (WSS), time-averaged wall shear stress (TAWSS), oscillatory shear index (OSI), and relative residence time (RRT), along with flow distribution and pressure distribution during systole and diastole. Based on these hemodynamic indicators, the rupture risk was compared to a geometric property 鈥� the aspect ratio. The research utilized patient-specific blood pressure data and anonymized DICOM images, from which aneurysm geometries were extracted using 3D Slicer and Meshmixer. Boundary conditions were established. A pulsatile velocity profile was applied at the inlet, and a pressure waveform at the outlet. Numerical simulations were performed using COMSOL Multiphysics 6.3. The results were summarized, compared with other scientific studies in the discussion section, and conclusions were drawn. The thesis consists of seven sections: introduction, literature review, research methodology, research results, discussion, conclusions, and references. The scope of the work: 56 pages (excluding appendices), 32 figures, 4 tables, and 39 references.

Baigiamajame bakalauro darbe suprojektuotas su啪aidybintos reabilitacijos sistemos, skirtos Parkinsonu sergan膷i懦 啪moni懦 vertinimui, pla拧takos 寞renginys. 艩is 寞renginys suprojektuotas taip, kad j寞 galima naudoti ir kaip pir拧t懦 j臈gos treniruokl寞. Atlikta pana拧i懦 sistem懦 patent懦 ir rinkoje esan膷i懦 analog懦 analiz臈. Ra拧to darbe parinktos pagrindin臈s med啪iagos, naudojamos pla拧takos 寞renginiui, atlikti antropometrijos skai膷iavimai parenkant jo geometrij膮 bei patikrinta, ar tai padaryta tinkamai atliekant virtualias 寞renginio apkrov懦 simuliacijas. Apra拧ytas 寞renginio ir visos reabilitacijos sistemos veikimo principas ir pagamintas prototipas. Apra拧yti pagrindiniai sistemos darbo saugos reikalavimai, atlikta ekonomin臈 analiz臈 ir pateiktos i拧vados. Sudaryti su啪aidybintos reabilitacijos sistemos pla拧takos 寞renginio bendro vaizdo, 寞renginio surinkimo, lanks膷ios plok拧tel臈s technologinio mar拧ruto ir pla拧takos 寞renginio variantinio projektavimo br臈啪iniai. Darb膮 sudaro 8 skyriai: 寞vadas, teorin臈 dalis, konstrukcin臈 dalis, technologin臈 dalis, saugos reikalavimai, ekonomin臈 dalis, i拧vados ir literat奴ros s膮ra拧as. Darbo apimtis 鈥� 63 puslapiai teksto be pried懦, 28 paveikslai, 28 lentel臈s, 31 bibliografinis 拧altinis.

In the final Bachelor thesis, a hand device of a gamified rehabilitation system for the assessment of people with Parkinson's disease was designed. This device is designed so that it can also be used as a finger strength trainer. An analysis of similar system patents and existing market analogues was conducted. The written work includes the selection of key materials used for the hand device, anthropometric calculations for determining its geometry, and verification through virtual load simulations to ensure proper design. The operating principle of the device and the entire rehabilitation system was described, and a prototype has been produced. The main safety requirements for the system are outlined, an economic analysis is performed, and conclusions are presented. Drawings of the general view, assembly, a technological route for the flexible plate, and variant design of the hand device for the gamified rehabilitation system have been prepared. The thesis consists of 8 chapters: introduction, theoretical part, constructional part, technological part, safety requirements, economic part, conclusions, and references.The total length of the thesis is 63 p. text without appendices, containing 28 figures, 28 tables, and 31 bibliographical references.

Baigiamajame magistro darbe tiriama skirting懦 segmentavimo metod懦 寞tak膮 galutiniams gautiems modeliams i拧 kompiuterin臈s tomografijos vaizd懦, specifi拧kai skirt懦 ortognatin臈ms operacijoms planuoti, toki懦 kaip kaukol臈s, apatinio 啪andikaulio, apatini懦 ir vir拧utini懦 dant懦 bei kairiojo ir de拧iniojo alveolinio nervo modeliai. Tyrime panaudoti trys rankiniai segmentavimo metodai 鈥� Otsu, kra拧to detektoriaus bei region懦 auginimo ir vienas automatinis, ma拧ininiu mokymu pagr寞stas segmentavimo algoritmas. I拧 viso atlikta 60 rekonstrukcij懦, i拧 kuri懦 20 panaudotos pagrindinei tiesai nustatyti, o kitos 鈥� po 10 kiekvienam metodui. Gauti rezultatai buvo palyginti tarpusavyje apskai膷iuojant DICE koeficientu ir Hausdorff始o atstumus, i拧vedant j懦 vidurk寞 bei standartin臋 deviacij膮. Taip pat patikrintas duomen懦 patikimumas brai啪ant sta膷iakampes diagramas ir stebint duomen懦 pasiskirstym膮. Gauti rezultatai apibendrinti, suformuluotos i拧vados. Rezultatai parodo, kad kauliniams audiniams tur臈t懦 b奴ti taikomas Otsu (arba kitas slenkstin臈s vert臈s metodas), dant懦 segmentavimui tur臈t懦 b奴ti taikomas kra拧to detektoriaus (arba kitas kont奴r懦 nustatymo metodas), o nerv懦 segmentavimui tur臈t懦 b奴ti taikomas region懦 auginimo (arba kitas region懦 metodas). Darb膮 sudaro 7 dalys: 寞vadas, literat奴ros ap啪valga, tyrimo metodika, tyrim懦 rezultat懦 analiz臈, diskusija, i拧vados, literat奴ros s膮ra拧as. Darbo apimtis 鈥� 63 p. teksto be pried懦, 21 paveikslas, 19 lenteli懦, 41 literat奴ros 拧altinis. Atskirai pridedami darbo priedai.

The final master's thesis investigates the influence of different segmentation methods on the final models obtained from computed tomography images, specifically intended for orthognathic surgery planning, such as models of the skull, lower jaw, lower and upper teeth, and left and right alveolar nerve. The study used three manual segmentation methods 鈥� Otsu, edge detector and region growing, and one automatic, machine learning-based segmentation algorithm. A total of 60 reconstructions were performed, of which 20 were used to determine the ground truth, and the others 鈥� 10 for each method. The obtained results were compared with each other by calculating the DICE coefficient and Hausdorff distances, deriving their average and standard deviation. The reliability of the data was also checked by drawing rectangular diagrams and observing the data distribution. The obtained results were summarized, and conclusions were formulated. The results show that Otsu (or another threshold method) should be applied to bone tissue, edge detector (or another contour detection method) should be applied to tooth segmentation, and region growing (or another region method) should be applied to nerve segmentation. The work consists of 7 parts: introduction, literature review, research methodology, analysis of research results, discussion, conclusions, references. The work volume 鈥� 63 pages of text without appendices, 21 figures, 19 tables, 41 references. Appendices are attached separately.