Non-ionizing Bone Measurement
Non-ionizing Bone Measurement - Related Videos
03:12
Ionization Energy
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2020
The amount of energy required to remove the most loosely bound electron from a gaseous atom in its ground state is called its first ionization energy (IE1). The first ionization energy for an element, X, is the energy required to form a cation with 1+ charge: The energy required to remove the second most loosely bound electron is called the second ionization energy (IE2). The energy required to remove the third electron is the third ionization energy, and so on. Energy is always required...
08:52
Software-Assisted Quantitative Measurement of Osteoarthritic Subchondral Bone Thickness
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Cited by 1 •
2022
This methodology article presents a software-assisted quantitative measurement protocol to quantify histologic subchondral bone thickness in murine osteoarthritic knee joints and normal knee joints as controls. This protocol is highly sensitive to subtle thickening and is suitable for detecting early osteoarthritic subchondral bone changes.
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.
06:16
Microhardness Measurements on Tooth and Alveolar Bone in Rodent Oral Disease Models
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Cited by 8 •
2024
Microhardness is a mechanical property and an informative parameter for evaluating hard tissue pathophysiology. Here, we demonstrate a standardized protocol (sample preparation, polishing, flat surface, and indentation sites) for microhardness analysis in tooth and alveolar bone in rodent oral disease models, namely, dental fluorosis, and ligature-induced periodontal bone resorption.
07:31
Characterization of Recombination Effects in a Liquid Ionization Chamber Used for the Dosimetry of a Radiosurgical Accelerator
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Cited by 2 •
2014
A growing number of radiation therapy devices offer the advantage of delivering the dose through very small beams to the tumor, allowing for increased conformity and higher doses per fraction. Many different detectors can be used for the dosimetry of these small fields. In the present study, the effect of ion recombination is investigated for a liquid ionization chamber using a stereotactic radiation therapy system.
FAQs
Quantitative ultrasound interprets how mechanical waves behave as they pass through bone. Measurement systems can examine wave speed, attenuation, or reflection, then use those signal features to estimate tissue characteristics. Because each feature describes a different aspect of wave transmission, combining them can provide a broader assessment than relying on a single signal property.
Wave speed, attenuation, and reflection serve as distinct observable signals in quantitative ultrasound. The method analyzes them to estimate bone structure, density, or mechanical properties rather than treating the tissue as a single undifferentiated target. This distinction matters in bioengineering because researchers can select signal features that match the bone characteristic they want to investigate.
Non-ionizing bone measurement is not limited to ultrasound. The overview also identifies approaches based on magnetic fields or light-based signals, which broaden the possible ways to examine bone without ionizing radiation. These alternatives can be considered alongside ultrasound and conventional imaging or laboratory methods, allowing investigators to compare different measurement types rather than depending on one technique.
Removing ionizing radiation is especially relevant when bone status must be assessed repeatedly. Non-ionizing methods may support longitudinal evaluation, meaning measurements are collected over time, and may enable portable assessment. In bioengineering studies, these features can make it easier to follow changes associated with growth, osteoporosis, fracture risk, or implant integration while complementing other methods.
A basic measurement workflow sends mechanical waves through bone and records their behavior. The resulting data are examined for speed, attenuation, or reflection, and those observations are used to estimate tissue characteristics. The workflow therefore connects an instrument-generated signal to measurements of bone structure, density, or mechanical properties without requiring ionizing radiation.
These measurements can contribute to studies of bone quality and fracture risk, as well as investigations of growth and osteoporosis. They can also be applied to questions about implant integration, where researchers need information about how bone and an implant relate over time. The same measurement principle therefore supports both biological studies and bioengineering evaluation of implanted systems.
These methods are most useful as complementary tools when conventional imaging or laboratory methods remain part of the investigation. Their value is the added ability to obtain repeated or potentially portable assessments, while other methods provide additional forms of evidence. In practice, a bioengineering study can place non-ionizing measurements within a broader evaluation rather than treating them as a complete replacement.