Skin Phantom
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. On the geometric modulation of skin lesion growth: a mathematical model for melanoma
Abstract Introduction Early detection of suspicious skin lesions is critical to prevent skin malignancies, particularly the melanoma, which is the most dangerous form of human skin cancer. In the last decade, image processing techniques have been an increasingly important tool for early detection and mathematical models play a relevant role in mapping the p
Res. Biomed. Eng.. Publicado em: 18/03/2016
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2. Skin Doses on the Lens for Temporomandibular Joint Exam in Cone Beam Computed Tomography
ABSTRACT The aim of this study was to evaluate the kerma at the surface of the lens in TMJ CBCT and to derive the equivalent dose. An anthropomorphic phantom of the head and neck manufactured by Radiation Support Devices (model RS-230) was used. The dosimetric measurements were obtained by using fourteen thermoluminescent dosimetry (TLD) dosimeters (LiF: Mg,
Braz. arch. biol. technol.. Publicado em: 2015-12
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3. Identificação de lesões de pele por detecção fotodinâmica mediada por ácido aminolevulínico / Identification of skin lesions through aminolaevulinic acidmediated photodynamic detection
No Brasil, o câncer de pele não-melanoma é o tipo de câncer mais comum, corresponde a cerca de 95% de todos os tipos de câncer de pele e 25% de todo o tipo de tumor maligno. O diagnóstico precoce permite tratar lesões logo nos primeiros estágios da doença, melhorando as condições do paciente. Assim, é de grande importância desenvolver técnicas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012
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4. Optimizing Images and Radiological Protection in Fluoroscopy / Otimização de imagens e proteção radiológica em fluoroscopia
This work had as main objective to evaluate the radiological protection in the interventional procedures radiology through quality control and evaluations radiometric, as well as the implementation of a phantom for evaluation of the image quality and the consequent reduction of dose in the patient. The developed simulator object for equipment evaluation of c
Publicado em: 2008
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5. Modelagem computacional de estruturas anatômicas em 3D e simulação de suas imagens radiográficas / Computational 3D modelling of anatomic structures and simulation of its radiography images
The conventional methods of quality control applied to radio diagnosis are the best way to have assured good quality of the produced images. Due the amount of variables to consider, the study of particular issues of the process of formation of radiological images requires complementary computational tools. However, the computational voxel based phantoms are
Publicado em: 2008
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6. Dosimetric evaluation in panoramic and teleradiography procedures / AvaliaÃÃo DosimÃtrica em procedimentos de Radiografia PanorÃmica e Teleradiografias
The present work had as an objective to evaluate the skin surface entrance dose in panoramic and teleradiography procedures in three clinics in Recife - Pernambuco - Brazil, and to contribute with data for the determination of reference levels for supercited extraoral procedures, for this purpose, operational conditions in 3 clinics were evaluated in Recife,
Publicado em: 2004
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7. "Um biossusceptômetro supercondutor AC para quantificar o ferro hepático". / A Superconductor AC Susceptometer to Quantify Liver Iron.
This work consisted in the development of a system to measure the magnetization of large paramagnetic and diamagnetic samples. The main application was susceptometric measurements of the hepatic tissue for quantification of the iron overload. Iron excess is commonly observed in thalassemic and sickle cell anemia patients who have repeatedly received red bloo
Publicado em: 2001
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8. Psychophysical correlates of phantom limb experience.
Phantom limb phenomena were correlated with psychophysiological measures of peripheral sympathetic nervous system activity measured at the amputation stump and contralateral limb. Amputees were assigned to one of three groups depending on whether they reported phantom limb pain, non-painful phantom limb sensations, or no phantom limb at all. Skin conductance