Agreement between Radiographic and Photographic Trabecular Patterns

Korstjens, Clara M.; Spruijt, R.J.; Mosekilde, Lis; Geraets, W.G.M.; Stelt, P F van der

doi:10.3109/02841859809175487

Cited by 3 publications

(6 citation statements)

References 18 publications

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“…Much relied on subjective observer interpretation and the use of correct lighting of the section during photograph capture. Korstjens et al (1998) discussed similar difficulties with photographic images as compared to radiographic images. Digital image analysis of radiographic trabecular bone architecture was used in previous studies (Geraets et al, 1990;Grynpas et al, 1992Grynpas et al, , 1994, and the reliability of the technique is well-established (Korstjens et al, 1997).…”

Section: Assessment Of Methodologymentioning

confidence: 99%

“…Digital image analysis of radiographic trabecular bone architecture was used in previous studies (Geraets et al, 1990;Grynpas et al, 1992Grynpas et al, , 1994, and the reliability of the technique is well-established (Korstjens et al, 1997). Radiographic images also capture trabecular structure throughout the entire section, and it was demonstrated that radiographic properties of trabecular bone architecture significantly correlate to biomechanical characteristics (Korstjens et al, 1998). As such, radiographic images of archeological bone sections were used in this study to conduct image analysis.…”

Section: Assessment Of Methodologymentioning

confidence: 99%

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Medieval trabecular bone architecture: The influence of age, sex, and lifestyle

Agarwal

Dumitriu

Tomlinson

et al. 2003

American J Phys Anthropol

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Osteoporosis has become a growing health concern in developed countries and an extensive area of research in skeletal biology. Despite numerous paleopathological studies of bone mass, few studies have measured bone quality in past populations. In order to examine age- and sex-related changes in one aspect of bone quality in the past, a study was made of trabecular bone architecture in a British medieval skeletal sample. X-ray images of 5-mm-thick coronal lumbar vertebral bone sections were taken from a total of 54 adult individuals divided into three age categories (18-29, 30-49, and 50+ years), and examined using image analysis to evaluate parameters related to trabecular bone structure and connectivity. Significant age-related changes in trabecular bone structure (trabecular bone volume (BV/TV), trabecular number (Tb.N), trabecular separation (Tb.Sp), and anisotropic ratio (Tb.An)) were observed to occur primarily by middle age with significant differences between the youngest and two older age groups. Neither sex showed continuing change in trabecular structure between the middle and old age groups. Age-related changes in bone connectivity (number of nodes (N.Nd) and node-to-node strut length (Nd.Nd)) similarly indicated a change in bone connectivity only between the youngest and two older age groups. However, females showed no statistical differences among the age groups in bone connectivity. These patterns of trabecular bone loss and fragility contrast with those generally found in modern populations that typically report continuing loss of bone structure and connectivity between middle and old age, and suggest greater loss in females. The patterns of bone loss in the archaeological samples must be interpreted cautiously. We speculate that while nutritional factors may have initiated some bone loss in both sexes, physical activity could have conserved bone architecture in old age in both sexes, and reproductive factors such as high parity and extended periods of lactation could have played a key role in female bone maintenance in this historic population. The study of qualitative elements (such as trabecular architecture) is vital if we are to understand bone maintenance and fragility in the past.

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Section: Assessment Of Methodologymentioning

confidence: 99%

Section: Assessment Of Methodologymentioning

confidence: 99%

Medieval trabecular bone architecture: The influence of age, sex, and lifestyle

Agarwal

Dumitriu

Tomlinson

et al. 2003

American J Phys Anthropol

View full text Add to dashboard Cite

show abstract

“…The three ROIs were subjected to a sequence of automatic measurement procedures. The procedure of extracting the quantitative data from the radiographic trabecular texture has been described extensively before and is presented here briefly for completeness 17,18 . First, the mean (MEAN) and standard deviation (STDEV) of the gray values were determined in the raw, unfiltered image samples.…”

Section: Methodsmentioning

confidence: 99%

“…The 29 measured geometrical, topological, and directional parameters of the radiographic trabecular bone pattern and the manner of standardization are presented in Table 1. The employed method of measuring spatial orientation of trabecular bone, its validity, and clinical application have been described previously and in more detail 17–22 …”

Section: Methodsmentioning

confidence: 99%

“…The procedure of extracting the quantitative data from the radiographic trabecular texture has been described extensively before and is presented here briefly for completeness. 17,18 First, the mean (MEAN) and standard deviation (STDEV) of the gray values were determined in the raw, unfiltered image samples. Subsequently, the image sample was binarized into white and black segments ( Figure 2A), and the fractal dimension according to the caliper method (FRACTL), the combined area of white segments (WAREA), and the perimeter of white segments (WCIRC), and the number of white and black segments (WITES and BLAKS) were determined.…”

Section: Controlsmentioning

confidence: 99%

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