What Is a Bone Density Screening?
The full name of bone density is bone mineral density, an important indicator of bone strength, expressed in grams per cubic centimeter, and is an absolute value. When the bone mineral density value is used clinically, because the absolute value of different bone density detectors is different, the T value is usually used to judge whether the bone density is normal.
Bone mineral density
- The full name of bone density is bone mineral density, an important indicator of bone strength, expressed in grams per cubic centimeter, and is an absolute value. When the bone mineral density value is used clinically, because the absolute value of different bone density detectors is different, the T value is usually used to judge whether the bone density is normal.
- T value is a
- Bone mineral density of healthy Chinese Han people in northern China, determined
- (1) Single Photon Absorption Assay (SPA): The principle that the absorption of radioactive material by bone tissue is proportional to the bone mineral content is based on the principle
- Bone density test results include average and standard values. The average value is the actual test result.
- Drugs and dietary methods to increase bone density:
- According to the different causes and mechanism of bone density deficiency, different raw materials can be selected when formulating health food formulas. The raw materials often used are as follows:
- 1. Calcium: If calcium absorption is normal, you can give 1. 00 grams to 1.50 grams daily. Among various calcium agents, calcium carbonate is more commonly used. For the elderly over 65 years, 0.75 grams to 2.5 grams per day. To use
- Human bone mineral content is closely related to bone strength and internal environment stability, so it is an important indicator for evaluating human health. Under physiological conditions, bone mineral content in human bones varies with age. In pathological conditions, certain drugs can cause changes in bone mineral content. Therefore, the quantitative determination of human bone mineral content has become an important subject in modern medicine. The routine detection of bone minerals is mainly through the measurement of human bone mineral content to directly obtain the accurate content of bone minerals (mainly calcium). It is useful for judging and studying bone physiology, pathology, and the degree of human aging, as well as the diagnosis of various diseases throughout the body Play an important role. Bone mineral content in normal people is closely related to gender and age. There are differences in different genders in the same age group, and women are lower than men. The same gender changes correspondingly with age. Bone mineral content gradually declines after 35-40 years, especially for women. These physiological change data also provide an important diagnostic basis for the diagnosis of the disease and the changes in bone mineral content caused by different causes.
- Age and sex are one of the factors that affect human bone mineral content. Bone mineral content from infancy to puberty increased with age and there was no significant gender difference. After puberty, the increase in bone mineral content is more pronounced in men than in women, reaching a peak at 30-40 years of age. In the future, the bone mineral content will gradually decrease with age, and the decline in women is greater than that in men. Data have been recorded on the measurement of the distal radius of 50-65-year-old women. The annual bone mineral content reduction rate is 0.0118 g / cm / year; in an elderly person, the bone mineral content of the distal radius has decreased by about 39% from the peak bone.
- Body weight, height and bone diameter are also one of the factors that affect bone mineral content in humans. There was a positive correlation between bone mineral content and height in men and premenopausal women, and a positive correlation between bone mineral content in premenopausal and postmenopausal women and body weight. Due to the individual differences in bone transverse diameter, the bone mineral content of people of the same age varies greatly. If the bone mineral content (BMC / BW.g / cm2) is used to modify the bone mineral content (BMC), the coefficient of variation of the normal curve of the same age will be reduced from 12% to 9%. Taking into account height, weight, and bone transverse diameter, the coefficient of variation decreased to 6%, the coefficient of variation of the elderly decreased from 20% to 10%, and that of children decreased to 8%.
- The effects of exercise and diet on human bone mineral content are considerable. The actual observations proved that the bone mineral content of the radius and spine of the athletes was significantly higher than that of the control group. With the same intake of calcium, people engaged in manual labor can maintain higher bone health than inactive people. Studies by bone experts have shown that women with high calcium diets have a higher average bone mineral content than women with low calcium diets, and women with high activity and low calcium diets can maintain better bone index. Therefore, pay attention to diet adjustment, eat more calcium-rich foods, moderate physical work or exercise can reduce the risk of bone loss and fractures.
- The bone mineral content of different age groups is measured to understand the regularity of bone mineral content during human bone development, growth and aging. If the bone mineral content of young people has not reached a high peak, diet and medicine should be taken at the same time to increase calcium and strengthen exercise to bring the bone mineral content to a high peak level. In addition to calcium supplements in the diet of the elderly, proper exercise and sun exposure can increase or not continue to reduce bone mineral content. The single photon bone mineral assay technology provides a simple, non-traumatic bone measurement for clinical use. Because of its high accuracy and precision, it is used to observe changes in normal bone mineral content and various diseases in a person's life. The effect on bone and drug efficacy provide favorable measurement methods for clinical research of bone metabolic diseases.