X-RAY computed tomography of a late period falcon bronze coffin

Maher, Manal Ahmed

doi:10.1016/j.radphyschem.2019.108475

Cited by 11 publications

(9 citation statements)

References 16 publications

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“…Moreover, starting from the 1970s, the introduction of computed tomography (CT) added a new powerful non-destructive X-ray technique for the investigation of 3D artworks [2]. The application of CT was introduced to the art and archaeological fields primarily as a tool for analysis of human and animal remains [3][4][5][6][7][8], and then to study other kinds of objects made with various materials, such as glass, metal, clay, and wood [9][10][11][12][13][14][15][16]. Although portable instruments are the best solution to analyze artworks on-site avoiding the transportation of fragile objects [3,17], in the framework of large restoration centers, where hundreds of important artworks are treated every year, it is useful to install a fixed apparatus.…”

Section: Introductionmentioning

confidence: 99%

X-ray Imaging Investigation on the Gilding Technique of an Ancient Egyptian Taweret Wooden Statuette

Vigorelli

Guidorzi

et al. 2021

J. Imaging

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Diagnostic physical methods are increasingly applied to Cultural Heritage both for scientific investigations and conservation purposes. In particular, the X-ray imaging techniques of computed tomography (CT) and digital radiography (DR) are non-destructive investigation methods to study an object, being able to give information on its inner structure. In this paper, we present the results of the X-ray imaging study on an ancient Egyptian statuette (Late Period 722–30 BCE) belonging to the collection of Museo Egizio in Torino and representing an Egyptian goddess called Taweret, carved on wood and gilded with some colored details. Since few specific studies have been focused on materials and techniques used in Ancient Egypt for gilding, a detailed investigation was started in order to verify the technical features of the decoration in this sculpture. Specifically, DR and CT analyses have been performed at the Centro Conservazione e Restauro “La Venaria Reale” (CCR), with a new high resolution flat-panel detector, that allowed us to perform tomographic analysis reaching a final resolution better than the one achievable with the previous apparatus operating in the CCR.

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Section: Introductionmentioning

confidence: 99%

X-ray Imaging Investigation on the Gilding Technique of an Ancient Egyptian Taweret Wooden Statuette

Vigorelli

Guidorzi

et al. 2021

J. Imaging

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“…The wood fibers, wood rays, and vessels accounted for ca. 50%, 17%, and 20%, respectively (Liu 2012).…”

Section: Quantification and Analysis Of The Pore Structure Parametersmentioning

confidence: 98%

“…In the wood science field, researchers have used XCT to successfully observe the shrinkage behavior of wood (Taylor et al 2013). X-ray computed tomography has also been applied to research related to wood archaeology (Stelzner and Million 2015;Maher 2020). Many sensitive wooden artifacts, e.g., wooden coffins, have been investigated via XCT in order to perform nondestructive testing.…”

Section: Introductionmentioning

confidence: 99%

Pore structure characterization of oak via X-ray computed tomography

Guo

Cheng

Chen

et al. 2020

BioRes

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The microscopic pore structure of wood is an important factor that affects its macroscopic properties. In this study, an oak sample was used for pore structure characterization. X-ray computed tomography imaging was carried out, and the scanning results (a multi-layer two-dimensional planar image) were rendered using Avizo software (a three-dimensional stereo image). A digital image processing method was used to identify the characteristics of the three-dimensional pore structure features and to calculate the characteristic parameters, i.e., the porosity (volume/surface), pore area and volume, pore size distribution, and the connectivity. The 27 mm3 oak sample had the following characteristics: a pore size which ranged from 8.56 µm to 1262.84 µm; a pore volume of 1.01 × 1010 µm3; a pore area and volume porosity of 1.12 × 109 µm2 and 37.6%, respectively; a surface porosity range of approximately 36.1% to 39.1%; a pore diameter for axial connection ranging from approximately 164.57 µm to 1262.84 µm; and had corresponding proportions of the pore area and volume of approximately 74.4% and 67.3%, respectively. This information provided useful structural data for the construction of future models.

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“…However, 3D proved unsuitable in the analysis due to the high incidence of image defects in the CT volume data. For this reason, the 2D method was chosen, which took longer but achieved better and more precise results [28].…”

Section: X-ray Computed Tomographymentioning

confidence: 99%

A non-destructive analytical study of cultural heritage object from Late Antiquity: gold framework and gemstone inlays

Hanus¹,

Sobek

Souček

et al. 2023

Herit Sci

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Recently found historical jewellery (Czech Republic) was subjected to detailed analyses to determine the gem inlays and the gold framework in which they are embedded. Such find fits into European jewellery archaeological artefacts containing similar stones from around the fifth century CE. The gemstones were analysed with optical microscopy and Raman micro-spectroscopy to determine their mineralogical characteristics and to find out typical structural-chemical differences based on which their provenance can be found. The results of this measurement discovered two main types of minerals from the garnet group, almandine and pyrope, where pyropes have been identified as Bohemian garnets thanks to the typical photoluminescence (PL) of chromium and vanadium impurities. The craftsmanship and processing of the goldsmith work were studied using X-ray computed tomography. Such a technique is an excellent contribution for detecting and visualising the internal parts hidden behind the placement of the stones. For this reason, 3D visualisation was used to describe and better understand all preserved parts. According to this object's very high cultural and historical value, the chosen methods are suitable for non-destructive study while proving to be essential to deepen our knowledge in archaeometric investigations focused on jewellery from Late Antiquity (with possible application to the jewellery from other periods). Based on the findings presented in this study, it is one of the world's oldest documented items using Bohemian garnets in jewellery. These findings underscore the tremendous economic and political importance of Bohemian garnet mineral resources altogether, with a second completely different type of garnet believed to have originated in distant India or Sri Lanka that was used in jewellery across Europe in Late Antiquity.

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X-RAY computed tomography of a late period falcon bronze coffin

Cited by 11 publications

References 16 publications

X-ray Imaging Investigation on the Gilding Technique of an Ancient Egyptian Taweret Wooden Statuette

X-ray Imaging Investigation on the Gilding Technique of an Ancient Egyptian Taweret Wooden Statuette

Pore structure characterization of oak via X-ray computed tomography

A non-destructive analytical study of cultural heritage object from Late Antiquity: gold framework and gemstone inlays

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