title: Evaluation of Parathyroid Lesions With Point Shear Wave Elastography.
abstract: OBJECTIVE
  The aim of our study was to evaluate the shear wave velocity (SWV) of parathyroid lesions by point shear wave elastography (SWE) and to compare their stiffness with that of thyroid nodules and normal thyroid parenchyma quantitatively.
  
  
  METHODS
  Thirty-six patients considered to have parathyroid disorders by clinical and laboratory tests and scintigraphy were enrolled in the study between January 2012 and February 2015. Conventional sonography, Doppler sonography, and the Virtual Touch tissue quantification (VTQ) method of point SWE (Siemens Medical Solutions, Mountain View, CA) were conducted with a linear transducer (4-9 MHz) while the patients were in the supine position. Then we compared our VTQ measurements with pathologic results.
  
  
  RESULTS
  The 36 patients included 31 female and 5 male patients with a mean age ± SD of 49 ± 15.7 years (range, 15-79 years). The mean SWV of parathyroid hyperplasia lesions (n = 4) was 1.46 ± 0.23 m/s, whereas the mean SWV of parathyroid adenomas (n = 32) was 2.28 ± 0.50 m/s. The mean SWV of normal thyroid parenchyma (n = 36) was 1.62 ± 0.20 m/s, and the mean SWV of benign thyroid nodules (n = 21) was 2.25 ± 0.51 m/s. A significant difference was found between SWV values of normal thyroid parenchyma and parathyroid adenoma (P < .001). A cutoff value of 1.73 m/s for adenomas led to 90.0% sensitivity and 80.6% specificity.
  
  
  CONCLUSIONS
  The VTQ method of point SWE may contribute to the discrimination of parathyroid adenomas from the thyroid gland. However, more comprehensive studies are needed.
authors: Department of Radiology, Dicle University Medical School, Diyarbakır, Turkey drsalih80@hotmail.com.
authors: Salih
authors: S
authors: Hattapoğlu
authors: Department of Radiology, Dicle University Medical School, Diyarbakır, Turkey.
authors: Cemil
authors: C
authors: Göya
authors: Department of Radiology, Dicle University Medical School, Diyarbakır, Turkey.
authors: Cihad
authors: C
authors: Hamidi
authors: Department of Nuclear Medicine, Dicle University Medical School, Diyarbakır, Turkey.
authors: Bekir
authors: B
authors: Taşdemir
authors: Department of Radiology, Dicle University Medical School, Diyarbakır, Turkey.
authors: Bircan
authors: B
authors: Alan
authors: Department of Radiology, Diyarbakır Obstetrics and Pediatrics Hospital, Diyarbakır, Turkey.
authors: Mehmet Sedat
authors: MS
authors: Durmaz
authors: Department of Radiology, Dicle University Medical School, Diyarbakır, Turkey.
authors: Memik
authors: M
authors: Teke
authors: Department of Radiology, Dicle University Medical School, Diyarbakır, Turkey.
authors: Faysal
authors: F
authors: Ekici
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D054459:Elasticity Imaging Techniques / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010280:Parathyroid Glands / Q000000981:diagnostic imaging; D010282:Parathyroid Neoplasms / Q000000981:diagnostic imaging*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D055815:Young Adult
keywords: Virtual Touch tissue quantification; head and neck ultrasound; parathyroid adenoma; shear wave velocity