RESUMO
PURPOSE: To prospectively investigate the relative accuracy and reproducibility of manual and automated computer software measurements by using polyps of known size in a human colectomy specimen. MATERIALS AND METHODS: Institutional review board approval was obtained for the study; written consent for use of the surgical specimen was obtained. A colectomy specimen containing 27 polyps from a 16-year-old male patient with familial adenomatous polyposis was insufflated, submerged in a container with solution, and scanned at four-section multi-detector row computed tomography (CT). A histopathologist measured the maximum dimension of all polyps in the opened specimen. Digital photographs and line drawings were produced to aid CT-histologic measurement correlation. A novice (radiographic technician) and an experienced (radiologist) observer independently estimated polyp diameter with three methods: manual two-dimensional (2D) and manual three-dimensional (3D) measurement with software calipers and automated measurement with software (automatic). Data were analyzed with paired t tests and Bland-Altman limits of agreement. RESULTS: Seven polyps (Assuntos
Algoritmos
, Inteligência Artificial
, Pólipos do Colo/diagnóstico por imagem
, Colonografia Tomográfica Computadorizada/métodos
, Imageamento Tridimensional/métodos
, Reconhecimento Automatizado de Padrão/métodos
, Interpretação de Imagem Radiográfica Assistida por Computador/métodos
, Adolescente
, Humanos
, Armazenamento e Recuperação da Informação/métodos
, Masculino
, Variações Dependentes do Observador
, Intensificação de Imagem Radiográfica/métodos
, Reprodutibilidade dos Testes
, Sensibilidade e Especificidade