Limitations of Peripheral Quantitative Computed Tomography Metaphyseal Bone Density Measurements
نویسندگان
چکیده
منابع مشابه
Limitations of peripheral quantitative computed tomography metaphyseal bone density measurements.
CONTEXT Peripheral quantitative computed tomography (pQCT) measurements are frequently obtained to assess cancellous bone density in the appendicular skeleton. Large variations in bone morphology associated with skeletal development may limit the interpretation of pediatric pQCT studies based on a single slice. OBJECTIVE The objective of the study was to characterize the variability in trabec...
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Introduction-Quantitative computed tomography (QCT) has been commonly used to acquire subject-specific, volumetric bone densities in vivo. With QCT, bone is modeled as a specimen composed of water and mineral, and the x-ray attenuation coefficients (i.e., Hounsfield number) after being corrected with scan phantoms, is used to calculate the mineral density of each voxel.[1] With QCT, a heterogen...
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BACKGROUND Individuals with cystic fibrosis (CF) have low bone density and increased fracture risk. METHODS Cross-sectional study investigating whole body bone mineral content (WBBMC), bone geometry and strength in 12 children with CF compared to 23 age- and sex-matched controls with and without adjusting for age, height, and body composition. RESULTS CF group had lower WBBMC than controls ...
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OBJECTIVE To use peripheral quantitative computed tomography (pQCT) to determine bone measurements in patients with cerebral palsy (CP) age 3 to 20 years and compare them with control subjects. STUDY DESIGN A total of 13 (5 male) patients with CP, along with 2 sex- and age-matched controls for each, were included in a mixed-model analysis with matched pairs as random effects for pQCT bone mea...
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ژورنال
عنوان ژورنال: The Journal of Clinical Endocrinology & Metabolism
سال: 2007
ISSN: 0021-972X,1945-7197
DOI: 10.1210/jc.2007-0126