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Limitations of quantitative bone-mass measurements using assessments of first-order statistics of grey-level histograms in plain radiographs

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Εθνικό Μετσόβιο Πολυτεχνείο   

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Limitations of quantitative bone-mass measurements using assessments of first-order statistics of grey-level histograms in plain radiographs (EN)
Sandilos, P (EN)
Kouloulias, VE (EN)
Metafa, A (EN)
Kouvaris, JR (EN)
Varela, MN (EN)
Vlahos, LJ (EN)
Matsopoulos, G (EN)
Antypas, C (EN)
Uzunoglu, NC (EN)
journalArticle (EN)
2014-03-01T01:20:43Z
2004 (EN)
Purpose: To evaluate the quality assurance of image-processing techniques in plain radiographs of skeletal structures. Material and Methods: Twenty-two patients were studied, each with one osteolytic metastasis. Accuracy and precision Of tube voltage and timer were confirmed. The mean value of grey-level histograms in plain radiographs (MVGLHs) was assessed. The deviation was monitored after five sets of sequential X-rays retaining the same settings for each radiograph. Results: Deviation was significantly higher in anatomical areas of thorax (21.2%) and abdomen (42.4%), while the consistency of MVGLH for weight-bearing bones was satisfactory with a maximum deviation of 2.9% (P < 0.001, Kruskal-Wallis test). Conclusion: Assessment of MVGLH in plain radiographs is a reliable method for the extremities and generally for regions without Superimposed movable tissues. (EN)
Radiology, Nuclear Medicine & Medical Imaging (EN)
ALVEOLAR BONE (EN)
bone-mass measurements (EN)
METASTASES (EN)
RECALCIFICATION (EN)
plain radiographs (EN)
DISODIUM PAMIDRONATE (EN)
OSTEOPOROSIS (EN)
CONJUNCTION (EN)
IMAGE-PROCESSING TECHNIQUES (EN)
TEXTURE (EN)
quality assurance (EN)
grey-level histogram (EN)
FRACTAL DIMENSION (EN)
RADIOTHERAPY (EN)
image-processing analysis (EN)
ACTA RADIOLOGICA (EN)
English
BLACKWELL MUNKSGAARD (EN)
Εθνικό Μετσόβιο Πολυτεχνείο
Ψηφιακό Αποθετήριο της Κεντρικής Βιβλιοθήκης του ΕΜΠ | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
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