Global ETD Search

81	Detekce živosti prstu na základě změn papilárních linií / Liveness Detection of a Finger Based on Changes of Papillary Lines Lichvár, Michal January 2008 (has links) There are several frauds against biometric systems (BSs) and several techniques exist to secure BSs against these frauds. One of the techniques is liveness detection. To fool fingerprint sensors, latent fingerprints, dummy fingers and wafer-thin layer attached to the finger are being used. Liveness detection is being used also when scanning fingerprints. Several different characteristics of the live finger can be used to detect liveness, for example sweat, conductivity etc. In this thesis, new approach is examined. It is based on the expandability of the finger as an effect of heartbeats/pulsation. As the skin is expanding, also the distances between papillary lines are expanding. Whole finger expands approximately in range of 4,5 ľm , the distance between two neighbor papillary lines in 0,454 ľm . This value collides with wavelength of blue and green light. The result from this work is following. The resolution of the capturing device is not high enough to capture the expandability on distance between two neighbor papillary lines. Also, because of collision with wavelength, the diffraction effect is presented and the result images are influenced by this error.
82	Precursor Lesions for Sporadic Pancreatic Cancer: PanIN, IPMN, and MCN Distler, Marius, Aust, Daniela E., Weitz, Jürgen, Pilarsky, Christian, Grützmann, Robert 11 July 2014 (has links) (PDF) Pancreatic cancer is still a dismal disease. The high mortality rate is mainly caused by the lack of highly sensitive and specific diagnostic tools, and most of the patients are diagnosed in an advanced and incurable stage. Knowledge about precursor lesions for pancreatic cancer has grown significantly over the last decade, and nowadays we know that mainly three lesions (PanIN, and IPMN, MCN) are responsible for the development of pancreatic cancer. The early detection of these lesions is still challenging but provides the chance to cure patients before they might get an invasive pancreatic carcinoma. This paper focuses on PanIN, IPMN, and MCN lesions and reviews the current level of knowledge and clinical measures. Pankreaskarzinom Sporadischer Bauchspeicheldrüsenkrebs Pankreastumor PanIN Intraepitheliale Neoplasie IPMN MCN Muzinös zystische Neoplasien TU Dresden Publikationsfonds Sporadic Pancreatic Cancer Pancreatic Intraepithelial Neoplasia PanIN Intraductal Papillary Mucinous Neoplasm IPMN Mucinous Cystic Neoplasm MCN Technical University Dresden Publication funds ddc:610 ddc:570 rvk:XA 10000 rvk:WA 15000
83	Praktická aplikace imunohistochemických a molekulárně - genetických metod v diferenciální diagnostice lézí urogenitálního a gynekologického traktu / Implementation of Immunohistochemical and Molecular-Genetic Methods in Differential Diagnosis of Urogenital and Gynecologic Tract Lesions Ondič, Ondrej January 2018 (has links) This thesis focuses on gynecopathology. It consists of a collection of seven papers published in pathology journals with impact factor. Introduction section contains selection of examples showing scientific application of molecular genetic methods. Further on the aims of individual research projects are described. The first project comprises histomophologic study of skin endometriosis addressing "mullerian" differentiation. A case report of a rare tumor namely borderline papillary serous tumor of the fimbriated end of the fallopian tube follows with molecular genetic analysis of KRAS, BRAF and p53 gene mutation status. Prospective longitudinal study on high grade squamous dysplasia (HSIL) of the cervix in HPV vaccinated women, so called DAV (dysplasia after vaccination), aims to elucidate pathogenesis of this phenomenon. Two other studies focus on incidence of fumarate hydratase deficient leiomyomas of the uterus and hereditary leiomyomatosis and renal cell carcinoma syndrome (HLRCC). The aim of those studies is to improve our diagnostic capability and increase detection rate of the patients with HLRCC syndrome. Finally a new subtype of HSIL namely bizarre cell dysplasia is described in two separate studies. Conclusion remarks contemplate the role of molecular genetics in surgical pathology.
84	Precursor Lesions for Sporadic Pancreatic Cancer: PanIN, IPMN, and MCN Distler, Marius, Aust, Daniela E., Weitz, Jürgen, Pilarsky, Christian, Grützmann, Robert 11 July 2014 (has links) Pancreatic cancer is still a dismal disease. The high mortality rate is mainly caused by the lack of highly sensitive and specific diagnostic tools, and most of the patients are diagnosed in an advanced and incurable stage. Knowledge about precursor lesions for pancreatic cancer has grown significantly over the last decade, and nowadays we know that mainly three lesions (PanIN, and IPMN, MCN) are responsible for the development of pancreatic cancer. The early detection of these lesions is still challenging but provides the chance to cure patients before they might get an invasive pancreatic carcinoma. This paper focuses on PanIN, IPMN, and MCN lesions and reviews the current level of knowledge and clinical measures. info:eu-repo/classification/ddc/610 ddc:610 info:eu-repo/classification/ddc/570 ddc:570
85	Praktická aplikace imunohistochemických a molekulárně - genetických metod v diferenciální diagnostice lézí urogenitálního a gynekologického traktu / Implementation of Immunohistochemical and Molecular-Genetic Methods in Differential Diagnosis of Urogenital and Gynecologic Tract Lesions Ondič, Ondrej January 2018 (has links) This thesis focuses on gynecopathology. It consists of a collection of seven papers published in pathology journals with impact factor. Introduction section contains selection of examples showing scientific application of molecular genetic methods. Further on the aims of individual research projects are described. The first project comprises histomophologic study of skin endometriosis addressing "mullerian" differentiation. A case report of a rare tumor namely borderline papillary serous tumor of the fimbriated end of the fallopian tube follows with molecular genetic analysis of KRAS, BRAF and p53 gene mutation status. Prospective longitudinal study on high grade squamous dysplasia (HSIL) of the cervix in HPV vaccinated women, so called DAV (dysplasia after vaccination), aims to elucidate pathogenesis of this phenomenon. Two other studies focus on incidence of fumarate hydratase deficient leiomyomas of the uterus and hereditary leiomyomatosis and renal cell carcinoma syndrome (HLRCC). The aim of those studies is to improve our diagnostic capability and increase detection rate of the patients with HLRCC syndrome. Finally a new subtype of HSIL namely bizarre cell dysplasia is described in two separate studies. Conclusion remarks contemplate the role of molecular genetics in surgical pathology.

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