Bone Mass Measurement
Bone Mass Measurement - Related Videos
08:00
Measuring Mass in the Laboratory
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2023
The analytical balance is the common piece of equipment in the scientific laboratory. These highly precise instruments can measure down to ten thousandths or even hundred thousandths of a gram. The triple beam balance is a type of scale that uses counterweights on a three rider beams to counterbalance the sample in the pan. On the other hand, modern analytical balances use a complex system of electronic sensors to accurately mass a substance. The analytical balance is so sensitive that it...
13:35
Mass Conservation and Flow Rate Measurements
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2023
Source: Ricardo Mejia-Alvarez and Hussam Hikmat Jabbar, Department of Mechanical Engineering, Michigan State University, East Lansing, MI The purpose of this experiment is to demonstrate the calibration of a flow passage as a flowmeter using a control volume (CV) formulation [1, 2]. The CV analysis focuses on the macroscopic effect of flow on engineering systems, rather than the detailed description that could be achieved with a detailed differential analysis. These two techniques should be...
08:49
Models of Bone Metastasis
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Cited by 115 •
2012
Animal models are frequently utilized to study cancer metastasis to bone. In this protocol we will describe two common methods of tumor inoculation for bone metastasis studies and briefly describe some of the analyses utilized to monitor and quantify these models.
08:24
Measuring Bone Remodeling and Recreating the Tumor-Bone Microenvironment Using Calvaria Co-culture and Histomorphometry
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Cited by 3 •
2020
The ex vivo culture of bone explants can be a valuable tool for the study of bone physiology and the potential evaluation of drugs in bone remodeling and bone diseases. The presented protocol describes the preparation and culture of calvarias isolated from newborn mice skulls, as well as its applications.
06:58
Culturing and Measuring Fetal and Newborn Murine Long Bones
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Cited by 4 •
2019
Here, we present a method for ex vivo culture of long murine bones at both fetal and newborn stages, suitable for analyzing bone and cartilage development and homeostasis in controlled conditions while recapitulating the in vivo process.
FAQs
DXA uses two X-ray energy levels and compares how each is absorbed by bone and soft tissue. This comparison allows the measurement to estimate areal bone mineral density in a region containing both tissues. The result describes mineral content relative to scanned area, so it contributes to skeletal strength and fracture-risk assessment without representing every feature of bone structure.
Two energy levels provide a basis for separating the absorption patterns of bone and soft tissue. This separation matters because the measured signal from a scanned body region can include both tissues. By accounting for their different absorption, DXA produces a more targeted estimate of bone mineral density that researchers can use to evaluate skeletal status and compare biological groups.
Areal bone mineral density describes mineral content in relation to the area examined, whereas other approaches may focus on bone geometry or total mineral content. These measurements address different properties of the skeleton and should not be treated as interchangeable. Using the appropriate measurement helps researchers match the assessment to questions about skeletal development, structure, or mineral accumulation.
Measurements may change in association with growth, aging, osteoporosis, nutrition, physical activity, disease, or treatment. In biological studies, these factors can serve as conditions for comparing skeletal status or as explanations for observed differences. Considering them helps researchers interpret whether a result reflects development, deterioration, recovery, or another change in bone health.
Repeated assessments allow researchers or clinicians to compare bone status at different time points rather than relying on a single observation. This approach can help track changes associated with aging, disease, nutrition, physical activity, or treatment. Longitudinal results support evaluation of skeletal development and help determine whether bone health is remaining stable or changing.
In biology, these measurements provide quantitative evidence for studying skeletal development, growth, aging, and osteoporosis. They also help evaluate how disease, nutrition, physical activity, or treatment relates to bone status. By linking mineral measurements with biological conditions, researchers can investigate changes in the skeleton and assess outcomes relevant to skeletal strength and fracture risk.