نتایج جستجو برای: qus
تعداد نتایج: 269 فیلتر نتایج به سال:
Background: A better understanding of how bone mineral density and vitamin D levels are associated with femoralneck and intertrochanteric hip fractures may help inform healthcare providers. We asked: 1) In patients age ≥ 55 years,is there a difference in quantitative ultrasound of the heel (QUS) t-score between patients with fractures of the femoralneck and those with fractures of the intertroc...
سابقه و هدف: پوکی و شکستگی استخوان از معضلات بزرگی است که کیفیت زندگی زنان یائسه را تحت تاثیر قرار می دهد. از آنجا که حدود یک سوم زنان بالای 50 سال از شکستگی در یکی از نقاط ستون مهره، ران و مچ دست رنج می برند، 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...
مقدمه: پوکی استخوان شایع ترین 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 می باشند. 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 ...
The aim of this study was to evaluate phalangeal bone quantitative ultrasound (QUS) parameters in patients with Raynaud phenomenon (RP) and relate it with nailfold capillaroscopy findings. Patients referring to our Rheumatology Unit with RP were enrolled and studied for capillaroscopy alterations; bone quality profile was measured by QUS of the phalanxes: AD-SoS (Amplitude Dependent Speed of So...
BACKGROUND Sclerostin is an osteocyte-derived inhibitor of the Wnt/β-catenin signaling pathway, which acts as a negative regulator of bone formation. Published data on sclerostin levels in type 1 diabetes mellitus (T1DM) are few. OBJECTIVE To evaluate gender differences in sclerostin serum levels and the association among sclerostin, bone mass, bone metabolism, and the main clinical character...
Over the last two and a half decades, photoacoustic (PA) imaging has become an important area of research in biomedical optics. Combining high contrast optical with spatial resolution ultrasound (US) imaging, PA can simultaneously visualize anatomical structures while interrogating their functionality through multiwavelength spectroscopy. Alongside technological developments applications acoust...
UNLABELLED Bone ultrasound measures (QUSs) can assess fracture risk in the elderly. We compared three QUSs and their association with nonvertebral fracture history in 7562 Swiss women 70-80 years of age. The association between nonvertebral fracture was higher for heel than phalangeal QUS. INTRODUCTION Because of the high morbidity and mortality associated with osteoporotic fractures, it is e...
CONTEXT There is little information on the potential impact of serum 1,25-dihydroxyvitamin D [1,25(OH)2D] on bone health including turnover. OBJECTIVE The objective of the study was to determine the influence of 1,25(OH)2D and 25-hydroxyvitamin D [25(OH)D] on bone health in middle-aged and older European men. DESIGN, SETTING, AND PARTICIPANTS Men aged 40-79 years were recruited from populat...
OBJECTIVE To compare by cross sectional study the quantitative heel ultrasound (QUS) variables broadband ultrasound attenuation (BUA) and velocity of sound (VOS) in male powerlifters and controls. METHODS Twenty four powerlifters and 21 sedentary male controls were recruited to the study. All the powerlifters were members of the British Drug Free Powerlifting Association and actively competin...
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