Results: 175

Inflammatory lesions and brain tumors: is it possible to differentiate them based on texture features in magnetic resonance imaging?

Neuroimaging strategies are essential to locate, to elucidate the etiology, and to the follow up of brain disease patients. Magnetic resonance imaging (MRI) provides good cerebral soft-tissue contrast detection and diagnostic sensitivity. Inflammatory lesions and tumors are common brain diseases that may...

JPEG and raw image files compared to direct measurement of the breast region

Acta cir. bras; 35 (10), 2020
Abstract Purpose: To compare JPEG and RAW image file extensions to direct measurement of the breast region. Methods: Points were marked on the breasts and arms of 40 female volunteers. The joining of these points in each hemibody formed seven linear segments, one angular segment and one median segment ...

Automatic segmentation of brain tumors in magnetic resonance imaging

ABSTRACT Objective To develop a computational algorithm applied to magnetic resonance imaging for automatic segmentation of brain tumors. Methods A total of 130 magnetic resonance images were used in the T1c, T2 and FSPRG T1C sequences and in the axial, sagittal and coronal planes of patients with brai...

Micro-architecture study of the normal infant auditory ossicles with micro-computed tomography

Int. j. morphol; 37 (4), 2019
This study aimed to investigate the micro-anatomical morphology of ossicular chain in term fetus using micro-CT, in order to analyze the parameters of internal ossicular structure that may affect sound conduction.Four ossicular chains from two term fetuses were scanned by micro-CT. The related structural...

Radiographic predictors determined with an objective assessment tool for neonatal patients with necrotizing enterocolitis

J. pediatr. (Rio J.); 95 (6), 2019
ABSTRACT Objective: The objective of this study was to develop and validate a computational tool to assist radiological decisions on necrotizing enterocolitis. Methodology: Patients that exhibited clinical signs and radiographic evidence of Bell's stage 2 or higher were included in the study, resulting...

Uso de retinógrafo portátil como ferramenta no rastreamento de retinopatia diabética

Rev. bras. oftalmol; 78 (5), 2019
Resumo Objetivo: Determinar a concordância do retinógrafo portátil Pictor Plus, na ausência de midríase, com a retinografia digital e avaliar a sua acurácia como método de rastreio da retinopatia diabética (RD). Métodos: Estudo transversal, mascarado para o observador, avaliando 100 olhos de ...

Effects of anti-TNF-α in experimental diversion colitis

Acta cir. bras; 34 (10), 2019
Abstract Purpose: To evaluate the effects of infliximab on the inflammation of the colonic mucosa devoid from fecal stream. Methods: Twenty-four rats were submitted to a Hartmann's procedure. They remained for 12 weeks with the fecal derivation to development of diversion colitis on excluded colorectal...

Using Standard Digital Extra-Oral Photography in Patient With Cleft Lip and Palate

ABSTRACT: A standardized photographic documentation is reproducible, which facilitates the evaluation of new techniques, treatment planning, and comparison of results. Clinical photography is important to impart scientific education to health professionals, because techniques can be better understood by ...

Space-time variability of the Roncador river basin in the change of land use and cover and its correlation with climatic variables

Biosci. j. (Online); 35 (4), 2019
The objective of this study was to evaluate the space-time dynamics of the soil use and occupation of the Rio Roncador river basin between 1985 and 2010. The scenes were classified by two methods (partially unsupervised - K-Means and supervised - Maximum likelihood), the Thematic Mapper sensor products o...

Comparación estadística entre modelo de yeso, digitalizado e impreso en 3D

Rev. Círc. Argent. Odontol; 78 (228), 2019
Se realizaron mediciones en los ejes x, y, z sobre modelos dentales de yeso, digitalizados e impresos con impresoras 3D, con fines comparativos, estadísticos y evaluativos, cuyo objetivo fue estimar el grado de coincidencia significativa entre los modelos, realizados por dos profesionales, en dos moment...