prikaz prve stranice dokumenta Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features
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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. i 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. Preuzeto s 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, br. 1, 2013, str. 175-181. https://urn.nsk.hr/urn:nbn:hr:184:435501

Rapan, Sasa, Savo Jovanovic, Gordan Gulan i Sven Kurbel. "Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features." Collegium antropologicum 37, br. 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), str. 175-181. Preuzeto s: https://urn.nsk.hr/urn:nbn:hr:184:435501 (Datum pristupa: 13.11.2024.)

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]. 03.04.2013. [pristupljeno 13.11.2024.];37(1):175-181. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:184:435501

S. Rapan, S. Jovanovic, G. Gulan i S. Kurbel, "Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features", Collegium antropologicum, vol. 37, br. 1, str. 175-181, Travanj 2013. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:184:435501. [Citirano: 13.11.2024.]

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Naslov (engleski)Detection of Coxarthrosis in Femoral Head Radiographic Images Seems Limited Mainly to Vertically Oriented Pattern Features
AutorSasa Rapan
AutorSavo Jovanovic
AutorGordan Gulan
AutorSven Kurbel
Autorova ustanovaSveučilište u Rijeci
Medicinski fakultet
(Katedra za ortopediju i fizikalnu medicinu)
Znanstveno / umjetničko
područje, polje i grana		BIOMEDICINA I ZDRAVSTVO
Kliničke medicinske znanosti
Ortopedija
Sažetak (engleski)
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.
Ključne riječi (engleski)
Jezikengleski
Vrsta publikacijeZnanstveni rad - Izvorni znanstveni rad
Status objaveObjavljen
Vrsta recenzijeRecenziran
Verzija publikacijeObjavljena verzija rada (izdavačev PDF)
Naslov časopisaCollegium antropologicum
Brojčani podacivol. 37, br. 1, str. 175-181
p-ISSN0350-6134
URN:NBNurn:nbn:hr:184:435501
Datum objave publikacije2013-04-03
URL dokumentahttp://hrcak.srce.hr/99555
Vrsta resursaTekst
Prava pristupaOtvoreni pristup
Uvjeti korištenjaIkona licence Zaštićeno autorskim pravom.
Datum i vrijeme pohrane2017-08-04 10:08:27