title: Quantitative assessment of normal soft-tissue elasticity using shear-wave ultrasound elastography.
abstract: OBJECTIVE
  The aim of this study was to measure the elasticity of various tissues and report it in kilopascals.
  
  
  METHODS
  The thyroid, submandibular, and parotid glands, masseter and gastrocnemius muscles, supraspinatus and Achilles tendons, renal cortex and pelvis, pancreas, and spleen of 127 healthy volunteers (89 women, 38 men; mean age, 37.72 ± 9.11 years; range, 17-63 years) were evaluated with shear-wave ultrasound elastography.
  
  
  RESULTS
  The mean elasticity values were determined to be 10.97 ± 3.1 kPa for the thyroid, 10.92 ± 3.1 kPa for the submandibular glands, 10.38 ± 3.5 kPa for the parotid glands, 10.4 ± 3.7 kPa for the masseter muscle, 11.1 ± 4.1 kPa for the gastrocnemius muscle, 31.2 ± 13 kPa for the supraspinatus muscle, 51.5 ± 25.1 kPa for the Achilles tendons, 5.0 ± 2.9 kPa for the renal cortex, 23.6 ± 5.4 kPa for the renal pelvis, 4.8 ± 3 kPa for the pancreas, and 2.9 ± 1.8 kPa for the spleen.
  
  
  CONCLUSIONS
  Elasticity values were determined for different tissues with shear-wave ultrasound elastography. Further studies comparing the elasticity values of normal and pathologic tissues are necessary to determine the diagnostic role of this technique.
authors.affiliation: Department of Radiology, Ankara Oncology Research and Education Hospital, Demetevler, Ankara 06460, Turkey.
authors.forename: Kemal
authors.initials: K
authors.lastname: Arda
authors.forename: Nazan
authors.initials: N
authors.lastname: Ciledag
authors.forename: Elif
authors.initials: E
authors.lastname: Aktas
authors.forename: Bilgin Kadri
authors.initials: BK
authors.lastname: Aribas
authors.forename: Kenan
authors.initials: K
authors.lastname: Köse
mesh_terms: D000293:Adolescent; D000328:Adult; D054459:Elasticity Imaging Techniques / Q000379:methods*; D005260:Female; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000000981:diagnostic imaging; D010179:Pancreas / Q000000981:diagnostic imaging; D012016:Reference Values; D012469:Salivary Glands / Q000000981:diagnostic imaging; D013154:Spleen / Q000000981:diagnostic imaging; D013710:Tendons / Q000000981:diagnostic imaging; D013961:Thyroid Gland / Q000000981:diagnostic imaging