Examinando por Autor "Salamanca Bernal, Julián Andrés"
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- ÍtemEstimación de costos de producción del 99mtc-mdp mediante pronóstico de modelo sarima(Fundación Universitaria Los Libertadores. Sede Bogotá., ) Barrera Diaz, Edgar Alejandro; Salamanca Bernal, Julián Andrés; Moreno López, Edna CarolinaContext: Bone scintigraphy (BGO) is a diagnostic test used to detect abnormalities in bone tissue through alterations in its metabolism. At present, the application of GGO depends on the use of radiopharmaceuticals such as phosphate analogues such as methyl diphosphonate (MDP) labeled with technetium (99mTc), which is widely used for imaging due to its good localization in the skeleton and its rapid removal from soft tissues. GGO is commonly used for the diagnosis of neoplasms and metastatic processes. Metabolic bone diseases are becoming more common, therefore, the GGO has taken a boom in diagnosis, and it is important to know the rate of use of radiopharmaceuticals such as 99mTc-MDP in order to guarantee their availability for timely diagnosis. Objective: Estimate the production costs of 99mTc-MDP through the forecast result of a SARIMA model. Methodology: The present study was carried out based on the forecasts estimated with the methodology of time series of a SARIMA model, through a database made up of the historical series of weekly doses produced by the Radiopharmacy of the National Institute of Cancerology in the period January 2020-06-01 to 2022-10-30 using the Box-Jenkins methodology. Results and conclusions: The analysis of the dose series of [MDP] TECHNETIUM (99mTc) showed a mean of 46.52 and a median of 51.00 with a Min of 0 and a Max of 89. The Dickey-Fuller test to verify the stationarity of the series yielded a p-value = <0.05 therefore the null hypothesis is rejected, this indicates that there is stationarity in the series. The forecast with the two selected models showed costs for the production of 1 dose of MDP, in terms of human resources, inputs, equipment, general expenses and administrative expenses, resulting in a total cost of the procedure of $125,621 pesos. The estimated total cost value of the procedure was estimated at $87,683,458 pesos.
- ÍtemSistemas memristivos: representación físico-matemática desde la teoría de los sistemas dinámicos(Fundación Universitaria Los Libertadores, ) Rodríguez Villalba, Óscar Eduardo; Salamanca Bernal, Julián Andrés; Ballesteros Ballesteros, Vladimir; .