نتایج جستجو برای: qus
تعداد نتایج: 269 فیلتر نتایج به سال:
سابقه و هدف: پوکی و شکستگی استخوان از معضلات بزرگی است که کیفیت زندگی زنان یائسه را تحت تاثیر قرار میدهد. از آنجا که حدود یک سوم زنان بالای 50 سال از شکستگی در یکی از نقاط ستون مهره، ران و مچ دست رنج میبرند، شناسایی زنان دچار استئوپنی یا استئوپروز مسئله مورد بحث بالینی و پاراکلینیکی است. هدف از این تحقیق بررسی قدرت روش سنجش تراکم در مقایسه با روش DEXA در تشخیص استئوپروز و استئوپنی در زنان ایر...
This short-term study which was carried out in a small group of pre- and postmenopausal women at Hospital Raja Perempuan Zainab II (HRPZII) aims to compare between Tscores detected by heel Quantitative Ultrasound (QUS) and by Dual X-ray Absorptiometry (DXA) of the hip and spine. The prevalence of osteoporosis by heel QUS was 63.3% and up to 16.7% by DXA. Insufficient or weak agreement exists be...
مقدمه: پوکی استخوان شایعترین بیماری متابولیک استخوان است که با کاهش توده استخوانی همراه است. روش DXA تکنیک انتخابی برای اندازهگیری BMD است. گرانی، غیرقابل حمل بودن و استفاده از اشعه یونیزان از معایب این روش میباشند. امروزه روش QUS، به علت غیر تهاجمی، ارزان، قابل حمل بودن و عدم استفاده از اشعه یونیزان به عنوان یک تکنیک جدید درتشخیص و غربالگری پوکی استخوان مطرح است. مطالعات متعدد نشان داده است ...
Quantitative ultrasound (QUS) measurement at hand phalanges was demonstrated to be a reliable method to assess skeletal maturation during childhood and adolescence. The aim of the study was to evaluate the influence of age, gender, puberty, lifestyle factors, and body composition on QUS parameters and to provide a normative database for QUS in school children in Lebanon. Measurements of phalang...
INTRODUCTION Evidence suggests that intake of antioxidants could positively influence bone mass by preventing bone metabolism against oxidative stress. OBJECTIVE We aimed to investigate the possible influence of single antioxidant intakes and dietary antioxidant quality score (DAQs) on calcaneal quantitative ultrasound (QUS) in a population of young adults. METHODS A total of 605 young Span...
This study investigates differences and associations between urinary mineral concentrations and calcaneal bone measures assessed by quantitative ultrasonography (QUS) in 4322 children (3.1-11.9 years, 50.6% boys) from seven European countries. Urinary mineral concentrations and calcaneal QUS parameters differed significantly across countries. Clustering revealed a lower stiffness index (SI) in ...
BACKGROUND Variance of peak bone mass has a substantial genetic component, as has been shown with twin studies examining quantitative measures such as bone mineral density (BMD) and quantitative ultrasound (QUS). Evidence implicating single nucleotide polymorphisms (SNPs) of the transforming growth factor beta-1 (TGFB1) gene is steadily accumulating. However, a comprehensive look at multiple SN...
Quantitative ultrasound (QUS) has been introduced in recent years for the comprehensive noninvasive and non-ionizing evaluation of bones. This paper presents a review of our research work of the last decade including experimental and computational studies for the ultrasonic assessment of fracture healing and osteoporosis. The axial transmission and the backscattering methods have been applied t...
Human immunodeficiency virus (HIV)-infected patients have an increased risk of developing osteopenia or osteoporosis compared with healthy individuals. Our aim was to compare dual X-ray absorptiometry (DXA), the gold standard for measuring bone mineral density (BMD), with bone quantitative ultrasound (QUS), an alternative technique for predicting fractures and screening low BMD, at least in pos...
OBJECTIVE It is highly debated whether associations between osteoporosis and atherosclerosis are independent of cardiovascular risk factors. We aimed to explore the associations between quantitative ultrasound (QUS) parameters at the heel with the carotid artery intima-media thickness (IMT), the presence of carotid artery plaques, and the ankle-brachial index (ABI). METHODS The study populati...
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