prikaz prve stranice dokumenta Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features
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Scientific paper - Original scientific paper
Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features
Collegium antropologicum, 37 (2013), 1; 175-181. urn:nbn:hr:184:435501
Rapan, Sasa; Jovanovic, Savo; Gulan, Gordan; Kurbel, Sven

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Rapan, S., Jovanovic, S., Gulan, G. & Kurbel, S. (2013). Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features. Collegium antropologicum, 37. (1), 175-181. Retrieved from https://urn.nsk.hr/urn:nbn:hr:184:435501

Rapan, Sasa, et al. "Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features." Collegium antropologicum, vol. 37, no. 1, 2013, pp. 175-181. https://urn.nsk.hr/urn:nbn:hr:184:435501

Rapan, Sasa, Savo Jovanovic, Gordan Gulan and Sven Kurbel. "Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features." Collegium antropologicum 37, no. 1 (2013): 175-181. https://urn.nsk.hr/urn:nbn:hr:184:435501

Rapan, S., et al. (2013) 'Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features', Collegium antropologicum, 37(1), pp. 175-181. Available at: https://urn.nsk.hr/urn:nbn:hr:184:435501 (Accessed 25 February 2025)

Rapan S, Jovanovic S, Gulan G, Kurbel S. Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features. Collegium antropologicum [Internet]. 2013 April 03 [cited 2025 February 25];37(1):175-181. Available at: https://urn.nsk.hr/urn:nbn:hr:184:435501

S. Rapan, S. Jovanovic, G. Gulan and S. Kurbel, "Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features", Collegium antropologicum, vol. 37, no. 1, pp. 175-181, April 2013. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:184:435501. [Accessed: 25 February 2025]

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Metadata
Title (english)Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features
AuthorSasa Rapan
AuthorSavo Jovanovic
AuthorGordan Gulan
AuthorSven Kurbel
Author's institutionUniversity of Rijeka
Faculty of Medicine
(Department of Orthopedics and Physical Medicine)
Scientific / art field,
discipline and subdiscipline		BIOMEDICINE AND HEALTHCARE
Clinical Medical Sciences
Orthopedics
Abstract (english)
Out of 120 conventional hip joint X-rays, two indepenendent examiners have chosen 27 healthy and 62 coxarthrotic joints. Central parts of femoral head images were digitalized (300 points/inch) and pixel density values analysed. Two methods were applied separately to horizontal rows and to vertical columns: variance coefficient calculation and power coefficients of Fourier harmonics. The arithmetic mean and median of variance coefficient for 256 pixel columns were both significantly higher in data of osteoarthrotic femurs (Mann-Whitney U-test, p=0.0046 and p=0.0011, respectively), while no difference was found for horizontal rows. The arithmetic mean and median of variance coefficient for 128 pixels long columns were significantly lower in data of osteoarthrotic femurs (p<0.001) with wider standard deviation (p= 0.0274), while standard deviation was significantly lower in rows of coxarthrotic heads (p<0.001). Fourier analysis of 128 pixel vertical columns showed significantly higher values in coxarthrotic femoral heads (from 1st harmonic, wave length of 10.8 mm to 33rd harmonic, wave length of 0.328 mm, p<0.05). Fourier analysis of 128 pixel horizontal rows did not differ much between coxarthrotic and normal femoral heads. Only values for the 60th and 61st harmonic (wavelength near 0.2 mm) showed significantly lower power in coxarthrotic images than in controls (p<0.01). Results suggest that in the analyzed set of digitalized x-ray femoral head images, information regarding osteoarthrotic changes in the central part of femoral head is detectable mainly through mathematic postprocessing of vertically oriented patterns.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review
Publication versionPublished version
Journal titleCollegium antropologicum
Numberingvol. 37, no. 1, pp. 175-181
p-ISSN0350-6134
URN:NBNurn:nbn:hr:184:435501
Publication2013-04-03
Document URLhttp://hrcak.srce.hr/99555
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2017-08-04 10:08:27