نتایج جستجو برای: dexa جذب سنجی اشعه x با انرژی مضاعف

تعداد نتایج: 1291459  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پزشکی 1391

چکیده زمینه و هدف: اگرچه به طور کلی پذیرفته شده است که وزن بدن تعیین کننده اصلی دانسیته معدنی استخوان است، سهم نسبی بافت چربی و بدون چربی بدن با bmd مبهم باقی مانده است. هدف کلی از این مطالعه بررسی ارتباط توده چربی و توده بدون چربی تمام بدن بر دانسیته معدنی استخوان زنان پست منوپوز می باشد. مواد و روشها: این مطالعه به صورت مقطعی، بر روی 46 زن پست منوپوز و سالم 51 تا 69 ساله مراجعه کننده به مر...

ژورنال: :تابش و فناوری هسته ای 2015
غلامرضا زارعی علی مالکی فارسانی امیر حیدری مسعود نصیری

نانوالیاف(engelhard corporation titanosilicate number 10/polyacrylonitrile) ets-10/pan   به عنوان یک مبادله کننده کامپوزیتی برای جذب فلزات سنگین سنتز وبهینه شد. چندین پارامتر در تهیه این جاذب، بررسی و در نهایت سایز نانوالیاف حدودا به75 نانومتر رسید. ساختار بوسیله میکروسکوپ الکترونی روبشیsem)) وطیف سنجی پراش انرژی پرتو ایکس((edax شناسایی و اندازه گیری منافذ و نسبت سطح به حجم جاذب با استفاده از آ...

2015
Anshul Aggarwal Rati Goyal Juhi Gupta Kauser J Khwaja

The Purpose of current study is that Osteoporosis is a systemic disorder characterized by low bone mass leading to fractures reported commonly in females after menopause. The investigations for osteoporosis most commonly used DEXA are very costly and not easily available. Few studies have proposed the use of orthopantomogram as a diagnostic marker for osteoporosis as it is simple, quick, easy, ...

Journal: :Nutricion hospitalaria 2010
A M Bravo Ramírez A Chevaile Ramos G F Hurtado Torres

BACKGROUND Nutritional alterations are highly prevalent among patients with chronic kidney diseases stage 5 who receive haemodialysis therapy. Body composition alterations are directly related to an increased morbidity and mortality. Nutritional assessment represents a cardinal intervention oriented to improve the outcome and survival in chronic renal patients. OBJECTIVE To evaluate body comp...

Journal: :Journal of applied physiology 1999
W Wang Z Wang M S Faith D Kotler R Shih S B Heymsfield

Although there is growing interest in studying muscle distribution, regional skeletal muscle (SM) mass measurement methods remain limited. The aim of the present study was to develop a new dual-energy X-ray absorptiometry (DEXA) model for estimating regional adipose tissue-free skeletal muscle mass (AT-free SM). Relationships were derived from Reference Man data between tissue-system- level com...

2016
Robinson Ramírez-Vélez Jorge Enrique Correa-Bautista Katherine González-Ruíz Andrés Vivas Antonio García-Hermoso Hector Reynaldo Triana-Reina

The body adiposity index (BAI) is a recent anthropometric measure proven to be valid in predicting body fat percentage (BF%) in some populations. However, the results have been inconsistent across populations. This study was designed to verify the validity of BAI in predicting BF% in a sample of overweight/obese adults, using dual-energy X-ray absorptiometry (DEXA) as the reference method. A cr...

Journal: :Orthopedics 2014
Emily N Morgan David A Crawford William F Scully Nicholas J Noce

Fragility fractures of the distal radius represent an opportunity to diagnose and treat osteoporosis before further fractures occur. The goal of this study was to determine the prevalence of prescriptions for calcium/vitamin D supplementation and the prevalence of dual-energy x-ray absorptiometry (DEXA) scans in patients who sustained fragility fractures of the distal radius. A further goal was...

Journal: :Blood 1995
P Dreger M Klöss B Petersen T Haferlach H Löffler M Loeffler N Schmitz

Agents with stem cell-toxic potential are frequently used for salvage therapy of Hodgkin's disease (HD) and high-grade non-Hodgkin's lymphoma (NHL). Because many patients with relapsed or refractory lymphoma are candidates for autologous progenitor cell transplantation, possible toxic effects of salvage chemotherapy on progenitor cells must be taken into account. In a retrospective study, we ha...

Journal: :Meat Science 2021

The development of a novel rapid dual energy X-ray absorptiometry (DEXA) system provides the opportunity to improve measurement beef carcase composition. A prototype DEXA was built in shipping container scan 51 carcases selected for wide range weight and fatness. One side each spray chilled other conventionally overnight before being quartered scanning then cut into 16 pieces CT determine Spray...

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