title: Sarcopenia: Current Concepts and Imaging Implications.
abstract: OBJECTIVE
  The purpose of this article is to review the nomenclature, clinical impact, and diagnostic techniques characterizing sarcopenia.
  
  
  CONCLUSIONS
  Sarcopenia-defined as significant loss of muscle-is associated with cachexia and frailty. Specific diagnostic criteria for sarcopenia continue to evolve, but imaging can play a role in the detection and quantification of muscle depletion. Emerging evidence indicates that sarcopenia is a relevant predictor of quality and quantity of life, particularly in patients who are elderly, have cancer, or undergo surgery.
authors.affiliation: 1 Department of Radiology, University of California Davis Health System, 4860 Y St, Ste 3100, Sacramento, CA 95817.
authors.forename: Robert D
authors.initials: RD
authors.lastname: Boutin
authors.affiliation: 2 Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Bethesda MD.
authors.forename: Lawrence
authors.initials: L
authors.lastname: Yao
authors.affiliation: 3 Department of Surgery, Division of Surgical Oncology, University of California Davis Health System, Sacramento, CA.
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Canter
authors.affiliation: 4 Department of Radiology, Musculoskeletal Imaging Section, Wake Forest School of Medicine, Winston-Salem, NC.
authors.forename: Leon
authors.initials: L
authors.lastname: Lenchik
mesh_terms: D000367:Age Factors; D015992:Body Mass Index; D003952:Diagnostic Imaging; D006801:Humans; D012307:Risk Factors; D055948:Sarcopenia / Q000150:complications / Q000175:diagnosis* / Q000628:therapy
keywords: body composition; imaging; muscle; sarcopenia