Official position of the Brazilian Association of Bone Assessment and Metabolism (ABRASSO) on the evaluation of body composition by densitometry: part I (technical aspects)—general concepts, indications, acquisition, and analysis

• Author(s) / Creator(s)

  • Maeda, Sergio Setsuo
  • Peters, Barbara Santarosa Emo
  • Martini, Lígia Araújo
  • Antunes, Hannah Karen Moreira
  • Gonzalez, Maria Cristina
  • Arantes, Henrique Pierotti
  • Prado, Carla M.
  • Pinto, Camila Lemos
  • de Araújo, Iana Mizumukai
  • de Paula, Francisco José Albuquerque
  • Borges, Joao Lindolfo Cunha
  • Albergaria, Ben-Hur
  • Ushida, Marcela
  • de Souza, Guilherme Cardenaz
  • de Mendonça, Laura Maria Carvalho
  • do Prado, Mirley
  • de Medeiros Pinheiro, Marcelo

• Objective
  To review the technical aspects of body composition assessment by dual-energy X-ray absorptiometry (DXA) and other methods based on the most recent scientific evidence.

  Materials and methods
  This Official Position is a result of efforts by the Scientific Committee of the Brazilian Association of Bone Assessment and Metabolism (Associação Brasileira de Avaliação Óssea e Osteometabolismo, ABRASSO) and health care professionals with expertise in body composition assessment who were invited to contribute to the preparation of this document. The authors searched current databases for relevant publications. In this first part of the Official Position, the authors discuss the different methods and parameters used for body composition assessment, general principles of DXA, and aspects of the acquisition and analysis of DXA scans.

  Conclusion
  Considering aspects of accuracy, precision, cost, duration, and ability to evaluate all three compartments, DXA is considered the gold-standard method for body composition assessment, particularly for the evaluation of fat mass. In order to ensure reliable, adequate, and reproducible DXA reports, great attention is required regarding quality control procedures, preparation, removal of external artifacts, imaging acquisition, and data analysis and interpretation.

• Date created

  2022-01-01

• Subjects / Keywords

  • Body composition
  • Skinfold
  • Plethysmography
  • Ultrasound
  • Computed tomography
  • Magnetic resonance imaging
  • Bioelectrical impedance analysis
  • Absorptiometry
  • X-ray
  • DXA

• Type of Item

  Article (Published)

• DOI

  https://doi.org/10.7939/r3-xjar-qw31

• License

  Attribution 4.0 International