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

Kouloulias, VE; Matsopoulos, G; Kouvaris, JR; Antypas, C; Uzunoglu, NC; Varela, MN; Metafa, A; Sandilos, P; Vlahos, LJ

dc.contributor.author	Kouloulias, VE	en
dc.contributor.author	Matsopoulos, G	en
dc.contributor.author	Kouvaris, JR	en
dc.contributor.author	Antypas, C	en
dc.contributor.author	Uzunoglu, NC	en
dc.contributor.author	Varela, MN	en
dc.contributor.author	Metafa, A	en
dc.contributor.author	Sandilos, P	en
dc.contributor.author	Vlahos, LJ	en
dc.date.accessioned	2014-03-01T01:20:43Z
dc.date.available	2014-03-01T01:20:43Z
dc.date.issued	2004	en
dc.identifier.issn	0284-1851	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16022
dc.subject	bone-mass measurements	en
dc.subject	grey-level histogram	en
dc.subject	image-processing analysis	en
dc.subject	plain radiographs	en
dc.subject	quality assurance	en
dc.subject.classification	Radiology, Nuclear Medicine & Medical Imaging	en
dc.subject.other	IMAGE-PROCESSING TECHNIQUES	en
dc.subject.other	DISODIUM PAMIDRONATE	en
dc.subject.other	FRACTAL DIMENSION	en
dc.subject.other	ALVEOLAR BONE	en
dc.subject.other	RADIOTHERAPY	en
dc.subject.other	OSTEOPOROSIS	en
dc.subject.other	METASTASES	en
dc.subject.other	TEXTURE	en
dc.subject.other	RECALCIFICATION	en
dc.subject.other	CONJUNCTION	en
dc.title	Limitations of quantitative bone-mass measurements using assessments of first-order statistics of grey-level histograms in plain radiographs	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/02841850410003581	en
heal.identifier.secondary	http://dx.doi.org/10.1080/02841850410003581	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	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
heal.publisher	BLACKWELL MUNKSGAARD	en
heal.journalName	ACTA RADIOLOGICA	en
dc.identifier.doi	10.1080/02841850410003581	en
dc.identifier.isi	ISI:000220975700017	en
dc.identifier.volume	45	en
dc.identifier.issue	2	en
dc.identifier.spage	197	en
dc.identifier.epage	203	en