OBJECTIVES To longitudinally assess bone mineral content (BMC), bone mineral density (BMD), and whole-body lean mass obtained through bone densitometry by dual-energy X-ray absorptiometry (DXA) in preterm newborns (PTNs) and compare them with full-term newborns (FTNs) from birth to 6 months of corrected postnatal age. METHODS A total of 28 adequate for gestational age (AGA) newborns were stud...

Bone mineral density (BMD) measurements are critical in many research studies investigating skeletal integrity. For pre-clinical research, micro-computed tomography (microCT) has become an essential tool in these studies. However, the ability to measure the BMD directly from microCT images can be biased by artifacts, such as beam hardening, in the image. This three-part study was designed to un...

Osteoporotic fractures are related not only to bone mineral density (BMD) but also to bone structure or microarchitecture, which is not assessed routinely with currently available methods. We have developed radiographic texture analysis (RTA) for calcaneal images from a peripheral densitometer as an easy, noninvasive method for assessing bone structure. We conducted a cross-sectional study of t...

Periprosthetic adaptive bone remodelling after total hip arthroplasty can be simulated in computer models, combining bone remodelling theory with finite element analysis. Patient specific three-dimensional finite element models of retrieved bone specimens from an earlier bone densitometry (DEXA) study were constructed and bone remodelling simulations performed. Results of the simulations were a...

Clinically, a cachectic and stunted boy, weight and height SD scores were -5,05 and -3,65 respectively. He had fever, anaemia, splenomegaly and polyartrhitis. There was complete immobility and severe pain of his lumbar spine. Xrays revealed compression fractures of all lumbar vertebrae. Bone mass densitometry confirmed severe osteoporosis (Z-score -4.5 SD). ESR: 33, Hb: 7.4 g/dl, CRP 112 mg/dl.

Aim . To improve the methods for assessing state of jaw bone tissue based on use ultrasonic shadow densitometry. Materials and As a research method, there was used latest development – velocimetric densitometer with an original software, sensors electronic positioner. The material experimental study were macropreparations animal species "Domestic Pig", where spongy cortical substance isolated, ...

Significant improvements in dual-energy X-ray absorptiometry (DXA) concerning quality, image resolution and image acquisition time have allowed the development of various functions. DXA can evaluate bone quality by indirect analysis of micro- and macro-architecture of the bone, which and improve the prediction of fracture risk. DXA can also detect existing fractures, such as vertebral fractures...