Fractal analysis on radiological images from 4 bone districts (proximal femur, calcaneus, metacarpus and 3rd phalanx) was performed in a study comparing ultrasonographic evaluation of the os calcis in severe osteoporotic patients and in control cases. We studied 86 X ray-views from patients with severe reduction of ultrasound Stiffness Index and in healthy women. Ultrasound measurements of left os calcis were performed using the Lunar Achilles-Plus instrument. Fractal analysis was performed using the box-counting method. In healthy subjects, fractal dimension, D, measure of structural complexity, resulted close to the topological dimension (no fractal structure), TD, in femur (1.99 ± 0.03)and phalanx (1.96 ± 0.03), D differed significantly from TD in calcaneus (D = 1.90 ± 0.02; p < 0.001) and metacarpus (D = 1.89 ± 0.03, p<0.001). In osteoporotic subjects , in calcaneus and metacarpus, D was higher (1.94 ± 0.03, 1.93 ± 0.03, respectively) than in healthy subjects (1.90 ± 0.02, 1.89 ± 0.02, respectively, p<0.01) . In all the subjects, fractal dimension and ultrasound broadband attenuation T-score correlated significantly in calcaneus and metacarpus (p<0.03 and p<0.02, respectively). Parameters based on a combination of ultrasonic examination and fractal analysis on radiographic images may add useful structural information regarding the patients’ skeleton using non invasive procedures.
Scheda prodotto non validato
Scheda prodotto in fase di analisi da parte dello staff di validazione
|Titolo:||Fractal dimension of bone texture in radiographs correlates to ultrasound broadband attenuation T-score|
|Rivista:||CLINICAL AND EXPERIMENTAL RHEUMATOLOGY|
|Citazione:||Bianciardi, G., Bisogno, S., Bertoldi, I., Laurini, L., Coviello, G., & Frediani, B. (2013). Fractal dimension of bone texture in radiographs correlates to ultrasound broadband attenuation T-score. CLINICAL AND EXPERIMENTAL RHEUMATOLOGY, 31(3), 389-393.|
|Appare nelle tipologie:||1.1 Articolo in rivista|