scholarly journals 70. Performance Evalvation of a X-ray Bone Densitometer XR-26

1991 ◽  
Vol 47 (8) ◽  
pp. 1105
Author(s):  
Takashi Sakai ◽  
Masashi Andoh
Keyword(s):  
X Ray ◽  
Bone Densitometer

scholarly journals An Innovative Low Cost Bone Densitometer Based on Conventional X-Ray Facility

2013 ◽  
Vol 4 (1) ◽  
pp. 95-100
Author(s):  
Jubaid Abdul Qayyum ◽  
Md Masum Howlader ◽  
Md Tamzeed-Al-Alam ◽  
Md Saiful Islam ◽  
Tahmid Latif ◽  
...  
Keyword(s):  
Optical Density ◽  
Bone Densitometry ◽  
Bone Fractures ◽  
Human Subjects ◽  
Medical Physics ◽  
Low Cost ◽  
X Ray ◽  
Bone Densitometer ◽  
The Third World ◽  
Processing Factors

Osteoporosis or bone loss affects many people, particularly the aged women, and leads to disabling bone fractures. An early diagnosis could provide preventive management. However, available bone densitometry equipment are very expensive and not available widely in the Third World. The present work presents the design & development of an innovative low cost bone densitometer based on conventional X-ray equipment available widely. The main innovation is the incorporation of a stack of aluminium with varying thickness placed beside the limb of a patient while taking an X-ray image. Then the optical density of the bone area in the developed film is compared to that from the aluminium stack, which eliminates variations due to all other processing factors, and gives a measure of the bone density. A low cost device has been developed to measure the optical density of the X-ray film over a circular area of about 1cm to give an average reading, which is more appropriate than spot metering in this application. Preliminary measurements of a few human subjects using this equipment clearly indicate the differences obtained due to expected osteoporosis. Calibration with standard bone densitometry equipment could provide values in standard units. This low cost innovative method and equipment appears to provide a low cost alternative to the diagnosis of osteoporosis. DOI: http://dx.doi.org/10.3329/bjmp.v4i1.14693 Bangladesh Journal of Medical Physics Vol.4 No.1 2011 95-100

scholarly journals To help practitioner: monitoring treatment of osteoporosis in study of bone mineral density on different axial densitometers

2020 ◽  
Vol 2 (37) ◽  
pp. 22-28
Author(s):  
O. A. Nikitinskaya ◽  
N. V. Toroptsova
Keyword(s):  
Preventive Measures ◽  
Initial Assessment ◽  
Correction Factors ◽  
Mineral Density ◽  
Simple Method ◽  
Treatment Of Osteoporosis ◽  
X Ray ◽  
T Score ◽  
Bone Densitometer ◽  
Monitoring Treatment

Dual-energy X-ray absorptiometry is recognized as the ‘gold standard’ for the diagnosis of osteoporosis. This method is used not only for the initial assessment of the state of the IPC, but also for further monitoring of treatment or preventive measures. It allows you to compare the data of a patient with successive measurements during a long observation. However, it is impossible to evaluate the results of studies in dynamics on devices of different manufacturers without standardizing indicators or introducing correction factors. A simple method for recalculating the T-score obtained on a Dexxum 3 apparatus (OsteoSys, South Korea) is presented in order to compare it with a similar indicator of a bone densitometer Lunar Prodigy (GE Healthcare, USA).

scholarly journals VZAIMOSVYaZI MEZhDU MINERAL'NOY PLOTNOST'Yu KOSTEY i rostom, massoy tela,a takzhe pokazatelyami sostava tela u detey

2007 ◽  
Vol 10 (1) ◽  
pp. 6-10
Author(s):  
A A SVEShNIKOV ◽  
I V REPINA
Keyword(s):  
Body Weight ◽  
Soft Tissue Mass ◽  
Mineral Density ◽  
Body Area ◽  
Tissue Mass ◽  
Adipose Tissues ◽  
X Ray ◽  
Bone Densitometer ◽  
Adipose Tissue Mass ◽  
Mineral Mass

The changes in mineral mass, muscles, connective and adipose tissues have been studied in 1280 children of both sexes at the age of 5-20 years using GE/Lunar (USA) X-ray bone densitometer. No differences in mineral density (MD) of the skeleton have been revealed among boys and girls during the puberty period. The most intensive mineral density maturation was noticed in girls at the age 11-13 years and in boys at 14-17 years. Significant correlations have been found between mineral mass and body area as well as mineral mass and body weight. 1800 adults at the age of 21-85 years have been studied in order to investigate mineral mass/soft tissue mass (MM/STM) index in dynamics. MM/STM index was 0,041 at the age of 16 years, 0,061 at the age of 21-25 years and remained stable up to 50 years. At the age from 51 till 65 years it has been slightly reduced (0,050). At the age from 66 till 80 years it has been reduced more sharply up to 0,040. The ratio mineral mass/adipose tissue mass was maximal at the age of 21-25 years - 0,102 and started to reduce up to 0,095 at the age of 26-30 years owing to the fat accumulation in women. At the age of 50 the index was 0,070, at the age of 80 years - 0,051.

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