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High-Resolution Three-Dimensional Photonic Scan-Derived Equations Improve Body Surface Area Prediction in Diverse

Maxine Ashby-Thompson1, Ying Ji1, Jack Wang1

  • 1New York Obesity Research Center, Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, New York, USA.

Obesity (Silver Spring, Md.)
|February 27, 2020
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Summary
This summary is machine-generated.

New body surface area (BSA) prediction equations using height and weight measurements improve accuracy, especially for individuals with obesity and diverse ethnicities. These equations offer better BSA estimation than previous methods.

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Area of Science:

  • Biomedical Engineering
  • Anthropometry
  • Medical Physics

Background:

  • Traditional body surface area (BSA) prediction equations often yield inaccurate results, particularly for individuals with obesity.
  • Accurate BSA estimation is crucial for various clinical applications, including drug dosing and physiological assessments.

Purpose of the Study:

  • To compare BSA measurements obtained via a three-dimensional photonic scanner (3DPS) with BSA predicted by existing equations.
  • To develop novel BSA prediction equations if current methods prove inadequate, especially for diverse populations.

Main Methods:

  • Validated a 3DPS against caliper measurements on a mannequin for body thickness.
  • Acquired whole-body scans from 268 participants (67 males, 201 females) with a wide BMI range (17.8–77.8 kg/m²).
  • Derived BSA from 3DPS scans and compared it with BSA predicted by six established equations.

Main Results:

  • 3DPS measurements showed high agreement with caliper measurements (within 1%, except hip at 1.8%).
  • BSA derived from 3DPS significantly differed from predictions by most existing equations (P < 0.05).
  • Developed new combined and sex-specific BSA prediction equations with high R² values (0.982–0.986).

Conclusions:

  • New BSA prediction equations based on height and weight demonstrate improved accuracy.
  • These novel equations enhance BSA estimation for individuals with a Body Mass Index (BMI) ≥ 40.
  • The updated equations are particularly beneficial for African Americans, Hispanic Americans, and Asian Americans.