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Intraobserver and Interobserver Variability in Ultrasound Measurements of Thyroid Nodules.
Lee, Hyung Jin; Yoon, Dae Young; Seo, Young Lan; Kim, Jin Ho; Baek, Sora; Lim, Kyoung Ja; Cho, Young Kwon; Yun, Eun Joo.
Afiliación
  • Lee HJ; Department of Radiology, Kangdong Seong-Sim Hospital, Hallym University College of Medicine, Seoul, Korea.
  • Yoon DY; Department of Radiology, Kangdong Seong-Sim Hospital, Hallym University College of Medicine, Seoul, Korea.
  • Seo YL; Department of Radiology, Kangdong Seong-Sim Hospital, Hallym University College of Medicine, Seoul, Korea.
  • Kim JH; Department of Radiology, Kangdong Seong-Sim Hospital, Hallym University College of Medicine, Seoul, Korea.
  • Baek S; Department of Radiology, Kangdong Seong-Sim Hospital, Hallym University College of Medicine, Seoul, Korea.
  • Lim KJ; Department of Radiology, Kangdong Seong-Sim Hospital, Hallym University College of Medicine, Seoul, Korea.
  • Cho YK; Department of Radiology, Kangdong Seong-Sim Hospital, Hallym University College of Medicine, Seoul, Korea.
  • Yun EJ; Department of Radiology, Kangdong Seong-Sim Hospital, Hallym University College of Medicine, Seoul, Korea.
J Ultrasound Med ; 37(1): 173-178, 2018 Jan.
Article en En | MEDLINE | ID: mdl-28736947
OBJECTIVES: The purpose of this study was to assess the intraobserver and interobserver variability in ultrasound (US) measurements of thyroid nodules. METHODS: We performed a prospective study of the US examinations of 73 patients with 122 thyroid nodules greater than 5 mm in size. Ultrasound measurements in 4 dimensions (anteroposterior, transverse, longitudinal, and maximum diameters) and measurement of the estimated volume (using the ellipsoid formula) of each thyroid nodule were performed twice by 2 independent radiologists (A and B, with 10 years and 6 months of experience, respectively). The intraobserver and interobserver variability in measurements of thyroid nodules was assessed by a Bland-Altman analysis of agreement. The absolute values for intraobserver and interobserver variability were compared by a paired t test. RESULTS: The 95% intraobserver and interobserver limits of agreement for the anteroposterior, transverse, longitudinal, and maximum diameters and estimated volume of thyroid nodules were ±18.2%, ± 14.3%, and ±21.0%; ± 17.2%%, ± 17.3%, and 18.2%; ± 14.6%, ± 15.5%, and ±22.3%; ± 13.8%, ± 15.5%, and ±19.6%; and ±30.2%, ± 27.7%, and ±44.1%, respectively. The absolute values for intraobserver variability were lower than those for interobserver variability for all measurements. CONCLUSIONS: There was considerable intraobserver and interobserver variability in US measurement of thyroid nodules, which must be taken into account during follow-up US examinations of patients with thyroid nodules.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Variaciones Dependientes del Observador / Ultrasonografía / Nódulo Tiroideo Tipo de estudio: Diagnostic_studies / Observational_studies Límite: Adult / Female / Humans / Male / Middle aged Idioma: En Revista: J Ultrasound Med Año: 2018 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Variaciones Dependientes del Observador / Ultrasonografía / Nódulo Tiroideo Tipo de estudio: Diagnostic_studies / Observational_studies Límite: Adult / Female / Humans / Male / Middle aged Idioma: En Revista: J Ultrasound Med Año: 2018 Tipo del documento: Article Pais de publicación: Reino Unido