搜索结果: 1-10 共查到“生物医学工程 X-Ray”相关记录10条 . 查询时间(0.441 秒)
Quantitative Computerized Tomography (QCT) versus Dual X-Ray Absorptiometry (DXA) in the Assessment of Bone Mineral Density of HIV-1 Infected Children
Bone Mineral Density HIV-Infected Children CT DXA
2013/2/19
Bone studies of HIV-infected children using dual X-ray absorptiometry (DXA) suggest bone mineral density (BMD) abnormalities. Pediatric studies are often performed using DXA instead of computed tomogr...
Analysis of Heavy Metals in Human Scalp Hair Using Energy Dispersive X-Ray Fluorescence Technique
Human Hair Heavy Metals X-Ray Fluorescence Risk Assessment
2013/1/29
Analysis of six heavy metals (Cr, Mn, Ni, Cu, Zn and Mo) in human scalp hair was carried out among various occupational distributions to ascertain their heavy metal burden, using energy dispersive x-r...
Impacts of Filtration on Contrast-Detail Detectability of an X-ray Imaging System
Contrast-Detail Detectability X-ray Imaging System
2009/9/8
The purpose of this study is to investigate the impacts of added filtration on the contrast-detail detectability of a digital X-ray imaging system for small animal studies. A digital X-ray imaging sys...
X-Ray Phase-Contrast Imaging with Three 2D Gratings
X-Ray Phase-Contrast Imaging Three 2D Gratings
2009/9/4
X-ray imaging is of paramount importance for clinical and preclinical imaging but it is fundamentally restricted by the attenuation-based contrast mechanism, which has remained essentially the same si...
Current computed tomography (CT) scanners, including micro-CT scanners, utilize a point x-ray source. As we target higher and higher spatial resolutions, the reduced x-ray focal spot size limits the t...
Investigation of Bone Mineral Density at Vertebral Bodies in X-ray CT Images
vertebral trabecular bone bone mineral density osteoporosis X-ray CT image
2009/6/8
The number of osteoporosis patients is increasing every year in Japan. Multi-detector-row CT is widely used in clinical environment including diagnoses of osteoporosis. However, quantitative evaluatio...
Investigation on the Distribution of Low Bone-Mineral-Density Locations at Human Vertebral Trabecular Bone from X-ray CT Images
vertebral trabecular bone bone mineral density osteoporosis X-ray CT image
2009/6/1
The number of osteoporosis patients is increasing every year in Japan. Bone mineral density (BMD), which is the helpful feature quantity in diagnosing osteoporosis, is generally measured in the centra...
Metacarpal Index Estimated by Digital X–ray Radiogrammetry as a Tool for Differentiating Rheumatoid Arthritis Related Periarticular Osteopenia
Metacarpal Index Digital X–ray Radiogrammetry Tool
2009/4/20
To investigate Metacarpal Index (MCI) and Bone Mineral Density (BMD) estimated by Digital X-ray Radiogrammetry (DXR) with respect to its ability to quantify severity-dependent variations of bone miner...
Mineral metabolisms and signs of cancer revealed in hair by fluorescence X-ray Analysis
calcium paradox breast cancer hypertension hepatocellular carcinoma
2009/4/1
Homeostasis in concentration of essential elements and its abnormality due to the development of cancer have been observed for single hair samples by fluorescent x-ray analysis using synchrotron radia...
Effective x-ray attenuation coefficient measurements from two full field digital mammography systems for data calibration applications
x-ray attenuation coefficient measurements two full field digital mammography systems data calibration applications
2010/2/25
Logarithmic response curves are well approximated as linear. Measured effective x-ray attenuation coefficients are characteristic quantities independent of the imaging system and are in agreement with...