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Absorptiometry Bone Density - Crossref

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Last Updated: 17 November 2022

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Beyond bone mineral density: new developments in dual X-ray absorptiometry assessment of bone quality

Bone quantity and, in part, bone quality are obtained by the gold standard method of dual X-ray absorptiometry, while bone strength measurements are obtained by means of a new DXA index called the bone strain index. The BSI also contains local reports on bone density distribution, bone shape, and, unlike other aspects of bone mineral density and bone quality such as the trabecular bone score, it represents the bone status of the bone in a specific loading condition.

Source link: https://doi.org/10.57582/ijbf.210103.120


Accuracy and precision of computer-assisted analysis of bone density via conventional and digital radiography in relation to dual-energy x-ray absorptiometry

Objective :U2014 Objective : Objective : Objective : Specifically, Objective : u2014 To determine bone mineral density by using mean gray value on digitalized and digital photographs of ex vivo bovine and equine bone specimens related to the gold-standard procedure of dual-energy x-ray absorption x-ray absorptiometry. Right metatarsal bones from 11 beef cattle and right femurs from two horses were shown in this sample. U2014 The strong relationship between MGV and BMD revealed that MGV analysis may be a reliable alternative to DEXA in determining radiographic bone density, according to MGV and BMD.

Source link: https://doi.org/10.2460/ajvr.73.3.381


Reference Ranges for Bone Mineral Content and Density by Dual Energy X-Ray Absorptiometry for Young Children

Abstract Background: Abstract: Background: Weak reference values for bone mineral content and areal bone mineral density in young children have hampered in early childhood bone mineral composition and areal bone mineral density by dual energy X-ray absorption X-ray absorptiometry have hampered research of bone mineral content and areal bone mineral density in young children has hampered. Aims: To determine age, sex, and population ancestry influences on BMC and aBMD, as well as developing smoothed reference ranges for BMC and aBMD in young children, try to determine age, sex, and population ancestry in young children. These results were compared with information from the Bone Mineral Density in Childhood Study from children aged 5 to 8. 9 years to create the smoothed reference curves. Height Z-scores were positively associated with bone Z-scores and accounted for 4% to 45% of the variance. Conclusions: We discuss the reliability of bone density measurements in young children and provide clear reference ranges and stature adjustments for estimating bone Z-scores at several skeletal sites to facilitate bone health assessments.

Source link: https://doi.org/10.1210/clinem/dgac323


AB1017 RADIOFREQUENCY ECHOGRAPHIC MULTI-SPECTROMETRY (REMS) AND DUAL-ENERGY X-RAYS ABSORPTIOMETRY FOR THE EVALUATION OF BONE MINERAL DENSITY IN A PERITONEAL DIALYSIS SETTING

Objectives This study was designed to compare the results of the REMS BMD test with dual-energy X-ray absorptiometry in a cohort of patients affected by end-stage renal disease undergoing peritoneal dialysis. Lumbar spine and proximal femur REMS scans were performed, and lumbar spine and proximal femur DXA scans were performed as well as lumbar spine and proximal femur REMS scans were performed. Both risk assessment results of two fracture risk algorithms were compared to the worst BMD obtained from either procedure, based on the worst BMD obtained from either method. The DXA laterolateral T-score at the lumbar spine was not significantly different from that of REMS, however, the DXA anteroposterior T-score was significantly higher than both the anteroposterior DXA and REMS results. Compare the mean T-scores obtained by DXA and REMS at the lumbar spine and the femur, with sample size 41 [52-73] and a total of 76 percent. [IQR] 74 [72-73] Vitamin D [4. 0-144] Body mass index Time [IQR] 27. 8] Patient with morphometric fractures 33 [84-72] Patient with morphometric fractures [IQR] 5. 4 [72] 3. 4 [4] PTH Median [Scorescorescorescorescorescorescorescores —36-146 [49] 61 [42] 6. 4] 154 [46-36 [21] (4) n [47] Comparison between the DeFRA DXA and REMS-derived outputs, as well as FRAX DXA and REMS-derived outputs raw and after correction for TBS.

Source link: https://doi.org/10.1136/annrheumdis-2022-eular.2224


Evaluation of dual energy x-ray absorptiometry for in situ measurement of bone mineral density of equine metacarpi

Objective u2014 To determine the accuracy and precision of dual energy x-ray absorptiometry for determining bone mineral density in horses in situ, research has been carried out. u2014Dual energy x-ray absorption x-ray absorptiometry can be used to measure bone density in the equine metacarpus, with reliable and precise results. In vivo bone density measurements of the equine metacarpus are comparable to serial in vivo measurements. Bone or bone density or density changes from bone remodeling that occur prior to stress fractures can be used in research to determine the effects of diet or medications on bone density or density changes.

Source link: https://doi.org/10.2460/ajvr.2001.62.752


Dual-energy X-ray absorptiometry measurement of bone-mineral density in the distal aspect of the limbs in racing Greyhounds

U2014Dual-energy x-ray absorptiometry of each limb and isolated bones from ten dogs with a fracture of the central tarsal bone of the right pelvic leg was performed. BED analysis of CTB was also carried out on excised bones, and BMD results of CTB were also obtained from limbs of dogs without a CTB fracture. Results u2014 The BMD of the accessory carpal bone and calcaneus was not significantly different from those bones in the contralateral limb's BMD. Although BMD of the entire right pelvic limb and isolated bones from dogs with a CTB fracture was lower than those for the entire left pelvic limb, dog with no CTB fracture, dog isolated bone fractures were not significantly different, results for isolated CTB from dogs without a CTB fracture were not significantly different, as opposed to values for the entire left pelvic limb.

Source link: https://doi.org/10.2460/ajvr.2000.61.1214


Pre-screening for Osteoporosis with Calcaneus Quantitative Ultrasound and Dual-energy X-ray Absorptiometry Bone Density

Abstract: Calcaneal quantitative ultrasonography is a common prescreening device for osteoporosis, but the benefits of QUS and dual-energy X-ray absorptiometry are uncertain. In a Taiwanese population, we investigated the connection between QUS and DXA. With the QUS and DXA T-score over the hip and spine, a total of 772 patients were enrolled, and demographic information was collected. QUS-hip's correlation coefficient with the DXA-hip was 0. 71 percent. In a Taiwanese population, this report found a strong correlation between QUS and DXA.

Source link: https://doi.org/10.21203/rs.3.rs-110965/v1


WHOLE BODY COMPOSITION AND BONE MINERAL DENSITY MEASURED BY DUAL-ENERGY X-RAY ABSORPTIOMETRY IN YOUNG SWIMMERS

Since these measurements are used to more accurately assess general body composition status, compared to body mass index, height-adjusted indices that represent muscularity and fatness have recently gained traction in exercise and sports sciences. Using DXA and height-normalized indices of fat mass and lean mass were determined for whole-body bone mineral density in both BC and whole-body bone mineral density. Swimmers had higher LM and lean mass index, and lower total body fat mass percentage, fat mass index, and visceral adipose tissue compared to controls, as well as visceral adipose tissue. Male swimmers had lower FMI and FMI, as well as higher LM than female swimmers. Compared to inactive college students of a similar age, swimmers had higher lean and lower fat mass and VAT, as well as VAT. Swimming raises BC components, according to reports, but does not appear to raise bone mineral density as a result of the reduced weight-bearing effect.

Source link: https://doi.org/10.33689/spormetre.1012472


Reduction in Aortic Pulse Wave Velocity Is Associated with a Short-Term Reduction in Dual-Energy X-Ray Absorptiometry Lumbar Spine Bone Mineral Density T Score

In those with a reduction in aPWV, Lumbar spine T scores dropped, although there was no significant drop in those with an increase in aPWV. AORTIC calcification and calcification will be included in the Lumbar spine DXA exam, as such, a decrease in lumbar spine T score without a change in femoral spine T score suggests a decrease in aortic calcification. Although our research needs additional confirmation, our results indicate that changes in aPWV may be used as a harbinger of changes in vascular calcification in the study of measures designed to minimize vascular calcification.

Source link: https://doi.org/10.1159/000501392


Effect of tamoxifen on bone mineral density measured by dual-energy x-ray absorptiometry in healthy premenopausal and postmenopausal women.

METHODS We used dual-energy x-ray absorptiometry in premenopausal and postmenopausal healthy women who participated in our placebo-controlled breast cancer trial. The mean annual loss in lumbar BMD per year over the three-year research period in tamoxifen-treated compliant women who remained premenopausal during the study period was 1. 4 percent, relative to a modest increase of 0. 4 percent per annum for women on placebo. BMD for women on tamoxifen increased by 1. 7 percent in the spine and 1. 81 in the hip, relative to a nonsignificant decline for women on placebo. CONCLUSION These results show that tamoxifen therapy is associated with a significant reduction of BMD in premenopausal women, as well as prevents bone loss in postmenopause women.

Source link: https://doi.org/10.1200/jco.1996.14.1.78

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions