Related Experiment Video
Updated: Feb 7, 2026

Automated Measurement of Microcirculatory Blood Flow Velocity in Pulmonary Metastases of Rats
Published on: November 30, 2014
Pulmonary metastases in children: are we operating unnecessarily?
Andrey Kaliff Pontes1, Fabio Mendes Botelho Filho1, Marcelo Eller Miranda1
1Universidade Federal de Minas Gerais, Cirurgia Pediátrica, Belo Horizonte, Minas Gerais, Brasil.
Objective:
to determine, in pediatric patients with malignant neoplasms, the characteristics of pulmonary nodules identified on computed tomography, as well as the possibility of differentiating benign lesions from metastases.
Methods:
we conducted a retrospective study of patients submitted to pulmonary resections of nodules diagnosed as metastases in a period of seven years. We compared computed tomography and surgery findings, as well as results of anatomopathological examinations.
Results:
we studied nine patients submitted to 11 surgical interventions. Among the studied variables, only nodule size greater than 12.5mm proved to be statistically significant to predict malignancy.
Conclusion:
among the tomographic characteristics of pulmonary nodules in children with malignant neoplasms, only the size of the lesion was a predictor of malignancy.
More Related Videos
Related Concept Videos
Operational Amplifiers
Real Number Operations
Vector Operations
A vector multiplied by a scalar value is called scalar multiplication. The result obtained is a new vector with a different magnitude. If the scalar is positive, the direction of the vector remains the same, but if it is negative, the direction of the vector is reversed. For example, the product of the mass and velocity yields the momentum.
Operant Conditioning
Reinforcement in operant conditioning can be positive or negative, both of which serve to increase the likelihood of a behavior. Positive...
Second Derivatives and Laplace Operator
Consider a scalar function. The curl of its...
Modes of Operations of BJT
Active Mode: The most common mode for amplification, the active mode features a forward-biased emitter-base junction and a reverse-biased base-collector junction. This setup enables electrons to be injected from the emitter to the base while blocking the majority carriers at the collector. The...

