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Related Concept Videos

Data Collection III01:05

Data Collection III

The physical assessment examines the patient for objective data that defines the patient's condition, and aids in formulating the nursing care plan. The purpose of physical assessment is a health status appraisal, which includes identifying health problems, and establishing a database for nursing intervention.
The principles to begin the physical assessment include conducting a comprehensive or problem-related history in a quiet, well-lit room, emphasizing privacy and comfort for the patient.
Body Water Content and Fluid Compartments01:19

Body Water Content and Fluid Compartments

Life's biochemical processes occur within aqueous solutions. Solutes are substances that are dissolved within these solutions. The human body contains a variety of solutes, which can differ across various body parts. These can encompass proteins—such as those responsible for clotting and carbohydrate transport—as well as electrolytes. In medicine, an electrolyte is often described as a mineral ion derived from a salt possessing an electric charge. Examples include sodium ions (Na+) and chloride...
Gravimetry: Overview01:05

Gravimetry: Overview

Gravimetric analysis is a quantitative method where the analyte is isolated and weighed directly or after conversion into a substance of known composition. Gravimetric analysis can be classified as precipitation, electrogravimetry, volatilization, and particulate gravimetry, based on the method used to isolate the analyte.
In precipitation gravimetry, the analyte is converted into a precipitate and weighed. For example, the silver content in a sample can be estimated by precipitating and...

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Related Experiment Video

Updated: Jul 3, 2026

Clinical Anthropometrics and Body Composition from 3-Dimensional Optical Imaging
06:48

Clinical Anthropometrics and Body Composition from 3-Dimensional Optical Imaging

Published on: June 7, 2024

Assessment methods in human body composition.

Seon Yeong Lee1, Dympna Gallagher

  • 1Body Composition Unit, Obesity Research Center, St. Luke's-Roosevelt Hospital, Columbia University, New York, New York, USA.

Current Opinion in Clinical Nutrition and Metabolic Care
|August 8, 2008
PubMed
Summary
This summary is machine-generated.

Accurate human body composition measurement is crucial for nutritional assessment. Recent advancements in techniques like MRI and 3D scanning offer detailed insights into fat, muscle, and organ health.

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Last Updated: Jul 3, 2026

Clinical Anthropometrics and Body Composition from 3-Dimensional Optical Imaging
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Published on: June 7, 2024

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Published on: February 2, 2017

Area of Science:

  • Nutritional Science
  • Biomedical Engineering
  • Human Physiology

Background:

  • Body composition analysis is vital for understanding nutritional status and overall health.
  • Accurate in vivo measurements are essential for clinical diagnosis, treatment, and intervention efficacy.
  • Existing methods require refinement to capture dynamic physiological functions.

Purpose of the Study:

  • To review the latest and most common in vivo human body composition determination methods.
  • To highlight techniques relevant for nutritional assessment and clinical applications.
  • To identify gaps in current measurement capabilities, particularly for infants.

Main Methods:

  • Bioelectrical impedance analysis
  • Dilution techniques
  • Air displacement plethysmography
  • Dual-energy X-ray absorptiometry (DXA)
  • Magnetic Resonance Imaging (MRI) and spectroscopy
  • Three-dimensional photonic scanning
  • Quantitative magnetic resonance

Main Results:

  • Current methods accurately measure fat, fat-free mass, bone mineral content, and body water.
  • Advanced techniques quantify adipose tissue depots, skeletal muscle, organs, and ectopic fat.
  • Newer methods like 3D scanning and quantitative MRI offer enhanced precision.

Conclusions:

  • Body composition analysis provides critical static and dynamic insights into health and disease.
  • Longitudinal assessment aids in tracking changes and evaluating interventions.
  • A need exists for improved in vivo methods for neonates to assess early health risks.