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Advisor(s)
Abstract(s)
Este estudo visa o desenvolvimento do conhecimento sobre radiografia-X aplicado a pintura,
com enfoque em pintura de cavalete, sobre madeira e sobre tela.
É traçada uma perspetiva histórica, desde a descoberta dos raios X por Wilhelm Röntgen,
passando pelo impacto consequente em termos radiológicos e radiográficos, até à sua
implementação no campo das obras de arte.
Descrevem-se os fundamentos radiológicos implicados neste tipo de exame, naquilo que é a
natureza da radiação eletromagnética, o modo como são produzidos os raios X e os
fenómenos que decorrem da sua interação com a matéria.
São avaliados todos os fatores radiográficos no que respeita à natureza da radiação, aos
parâmetros instrumentais, aos geometrismos de posicionamentos ou à inclusão de estruturas
adicionais, e a descrição sistematizada do seu impacto na qualidade da imagem, quer no
suporte analógico de película, quer na sua vertente digital.
Na componente de leitura dos dados obtidos, é delineada uma metodologia específica de
interpretação de imagem, sendo descritos e explorados casos concretos de estudo que ilustram
a capacidade de fornecimento de novas informações, em pintura de cavalete, deste exame de
área não destrutivo.
This study aims to develop the knowledge about the application of X-radiographs to easel painting, focusing on those with wood and canvas supports. An historical perspective is drawn, from the discovery of X-rays by Wilhelm Röntgen, through the following radiological and radiographic impact, to the implementation in the field of art works. It is described the radiological basis involved in this type of examination, concerning the nature of electromagnetic radiation, the way X-rays are produced and the resultant phenomena of its interaction with matter. Every radiographic factor is evaluated such as the nature of the radiation, the instrumental parameters, geometrical and placements issues or the inclusion of additional structures, and then proceed to the systematic description of its impact on image quality, whether in analogic film, as on digital support. In the reading component of the data, it is outlined a specific methodology of image interpretation, being described and explored specific case studies that illustrate the ability to supply new information on easel painting, by this non-destructive exam.
This study aims to develop the knowledge about the application of X-radiographs to easel painting, focusing on those with wood and canvas supports. An historical perspective is drawn, from the discovery of X-rays by Wilhelm Röntgen, through the following radiological and radiographic impact, to the implementation in the field of art works. It is described the radiological basis involved in this type of examination, concerning the nature of electromagnetic radiation, the way X-rays are produced and the resultant phenomena of its interaction with matter. Every radiographic factor is evaluated such as the nature of the radiation, the instrumental parameters, geometrical and placements issues or the inclusion of additional structures, and then proceed to the systematic description of its impact on image quality, whether in analogic film, as on digital support. In the reading component of the data, it is outlined a specific methodology of image interpretation, being described and explored specific case studies that illustrate the ability to supply new information on easel painting, by this non-destructive exam.
Description
Keywords
Radiografia-X Pintura cavalete Fundamentos radiológicos Parâmetros radiográficos Interpretação X-radiography Easel paintings Radiological basis Radiographic parameters Interpretation