Assessment of Fourier Tools for Cancellous Bone Structure Analysis
نویسندگان
چکیده
The usefulness of Fourier analyses as a tool for determining key parameters of cancellous bone structure is investigated. The autocorrelation function is used to determine measures of preferred orientation of trabeculae and anisotropy. Peaks in the power spectrum are used to determine average trabecular strut spacing. Good agreement and high correlations were observed when these frequency domain measurements were compared to currently used histomorphometric parameters. The most attractive feature of frequency analyses is the elimination of segmentation and the resulting bias inherent in current methodologies. The potential for obtaining structural information from frequency analyses is demonstrated and merits further exploration.
منابع مشابه
Wavelet decomposition of transmitted ultrasound wave through a 1-D muscle-bone system.
In the attempt for using ultrasound as a diagnostic device for osteoporosis, several authors have described the result of the in vitro experiment in which ultrasound is passed through a cancellous bone specimen placed in a water tank. However, in the in vivo setting, a patient's cancellous bone is surrounded by cortical and muscle layers. This paper considers in the one-dimensional case (1) wha...
متن کاملبررسی هیستو مورفومتریک استخوان اسفنجی مهره دمی رت در طی آبستنی
Pregnancy make demands upon maternal calcium hemeostasis and the extent to which the maternal bone mass is effected remains uncertain. Recently changes in the bone mass during human pregnancy have been associated also with the transformation of the cancellous architecture and the bone surface available for exchange. These jistomorphometrical structural changes were...
متن کاملNonlinear Analysis: Real World Applications
A one-dimensionalmodel of an in vitro experiment, inwhich a specimen of cancellous bone is immersed in water and insonified by an ultrasonic pulse, is considered. Themodification of the poroelastic model of Biot due to Johnson et al. [D.L. Johnson, J. Koplik, R. Dashen, Theory of dynamic permeability and tortuosity in fluid-saturated porous media, J. Fluid Mech. 176 (1987) 379–402] is used for ...
متن کاملIdentification of hip fracture patients from radiographs using Fourier analysis of the trabecular structure: a cross-sectional study
BACKGROUND: This study presents an analysis of trabecular bone structure in standard radiographs using Fourier transforms and principal components analysis (PCA) to identify contributions to hip fracture risk. METHODS: Radiographs were obtained from 26 hip fracture patients and 24 controls. They were digitised and five regions of interest (ROI) were identified from the femoral head and neck for...
متن کاملUse of FTIR spectroscopic imaging to identify parameters associated with fragility fracture.
BMD does not entirely explain an individual's risk of fracture. The purpose of this study was to assess whether specific differences in spatially resolved bone composition also contribute to fracture risk. These differences were assessed using Fourier transform infrared spectroscopic imaging (FTIRI) and analyzed through multiple logistic regression. Models were constructed to determine whether ...
متن کامل