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Understanding how an object moves along a path requires distinguishing between motion over a time span and motion at a precise moment. A useful example is a vehicle traveling along a straight and level path, where its position at any given time is known. The initial step in analyzing this motion is to measure how far the vehicle travels over a fixed time period. This measurement, called average velocity, is computed by dividing the total change in position by the duration over which the change...
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Related Experiment Video

Updated: Feb 1, 2026

Creating Objects and Object Categories for Studying Perception and Perceptual Learning
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Objective Quantification of Liposuction Results.

Alain J Azzi1, Ann-Sophie Lafrenière2, Alex Viezel-Mathieu1

  • 1Division of Plastic and Reconstructive Surgery, McGill University, Montreal, Quebec, Canada.

Journal of Cutaneous and Aesthetic Surgery
|December 12, 2018
PubMed
Summary
This summary is machine-generated.

Objective measurement of subcutaneous adipose tissue after liposuction is crucial. This review summarizes techniques like ultrasound and MRI, highlighting their benefits for assessing body fat changes and redistribution.

Keywords:
Adipose tissueliposuctionquantificationvolume Keymessage: Currently, no reliable gold standard exists for the objective outcome measurement following liposuction. This review provides a summary of various techniques for quantification of liposuction results. The preliminary results from this review are promising, and we believe that three-dimensional representation and objective quantification are the future of cosmetic surgery.

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Area of Science:

  • Plastic Surgery
  • Medical Imaging
  • Body Composition Analysis

Background:

  • Lack of a definitive gold standard for objective liposuction outcome assessment.
  • Need for reliable methods to quantify subcutaneous adipose tissue changes post-procedure.

Purpose of the Study:

  • To systematically review and summarize objective methods for measuring subcutaneous adipose tissue following liposuction.
  • To evaluate techniques used for quantifying adipose tissue in liposuction outcome assessment.

Main Methods:

  • Systematic literature search across Ovid MEDLINE, Embase, and PubMed.
  • Inclusion of articles detailing objective adipose tissue quantification techniques post-liposuction.
  • Review of methods including ultrasound, DXA, MRI, CT, and 3D imaging.

Main Results:

  • Various imaging modalities can objectively measure subcutaneous adipose tissue.
  • Benefits include quantitative pre- and post-operative assessment, detection of fat deposit changes, and monitoring fat redistribution.
  • Ultrasound, DXA, MRI, CT, and 3D imaging are among the reviewed techniques.

Conclusions:

  • Multiple objective techniques exist for liposuction outcome measurement.
  • Further research is needed on clinical relevance and impact of imaging modalities.
  • Development of accurate, reproducible automated volumetric measurement technology is recommended.