Comparative Analysis of Eximius Med and MNPS Software for Stereotactic Neurosurgical Planning: A Precision and Accuracy Study

Abstract

Objective

To compare the geometric registration in the Eximius Med (Artis Tecnologia) and MNPS (Mevis Informática Médica LTDA.) stereotactic software.

Materials and Methods

The study design included acquisition of skull images by computed tomography, marking of point coordinates (X, Y, and Z) in the MNPS and Eximius Med software performed by two independent evaluators, and statistical evaluations of precision and accuracy. Data were expressed as means, variances, and standard deviation. For comparisons between variables, the Euclidean distance, Student's t-test, Levene's test, the calculation of Cohen's D, and the intraclass correlation coefficient (ICC) were used. Values of p < 0.05 were considered statistically significant.

Results

The mean Euclidean distance was 0.07 ± 0.056 (95%CI: −0.037–0.18) mm. It is possible to state that there is a submillimetric difference in the coordinates with low effect size between the measurements made in Eximius and MNPS. The intraobserver evaluation showed that there is a positive correlation (ICC = 1) in the markings of each evaluator, while in the interobserver evaluation, there was no significant difference in any of the coordinates (p > 0.5) between the two software, when comparing evaluators 1 and 2.

Conclusion

Eximius Med, therefore, is a consistent, comparable, precise, and highly accurate alternative for use in cranial stereotaxy.

Resumo

Objetivo

Comparar o registro geométrico nos softwares estereotáxicos Eximius Med (Artis Tecnologia) e MNPS (Mevis Informática Médica LTDA.).

Materiais e Métodos

O desenho do estudo incluiu aquisição de imagens do crânio por tomografia computadorizada, marcação das coordenadas de pontos (X, Y e Z) nos softwares MNPS e Eximius Med, realizadas por dois avaliadores independentes, e avaliações estatísticas de precisão e exatidão. Os dados foram expressos como médias, variâncias e desvio padrão. Para comparações entre variáveis, foram utilizados a distância euclidiana, o teste t de Student, o teste de Levene, o cálculo de D de Cohen e o coeficiente de correlação intraclasse (CCI). Valores de p < 0,05 foram considerados estatisticamente significativos.

Resultados

A média da distância euclidiana foi 0,07 ± 0,056 (IC95%: −0,037–0,18) mm. É possível afirmar que há uma diferença submilimétrica nas coordenadas com baixo tamanho de efeito entre as medições feitas no Eximius Med e no MNPS. A avaliação intraobservador mostrou uma correlação positiva (CCI = 1) nas marcações de cada avaliador, enquanto na avaliação interobservador não houve diferença significativa em nenhuma das coordenadas (p > 0,5) entre os softwares, ao comparar os avaliadores 1 e 2.

Conclusão

O Eximius Med, portanto, é uma alternativa consistente, comparável, precisa e de alta acurácia para uso em estereotaxia craniana.

Keywords

neurosurgery - software - imaging - three-dimensional

Palavras-chave

neurocirurgia - software - imagem - tridimensional

Publikationsverlauf

Eingereicht: 22. November 2024

Angenommen: 20. März 2025

Artikel online veröffentlicht:
01. Juli 2025

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