ABSTRACT
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Subject(s)
Humans , Female , Middle Aged , 3-Iodobenzylguanidine , Fluorodeoxyglucose F18 , Incidental Findings , Paraganglioma/diagnostic imaging , Tomography, X-Ray Computed , Radiopharmaceuticals , Aorta/diagnostic imaging , Iodine Radioisotopes , Paraganglioma/pathology , Positron-Emission TomographyABSTRACT
OBJETIVO: Analizar las características epidemiológicas y antropométricas de los pacientes con activación de la grasa parda detectada por tomografía por emisión de positrones con fluoruro 18-fluorodeoxiglucosa/tomografía computarizada (18F-FDG PET/TC). MATERIAL Y MÉTODOS: De 2005 a 2017, se incluyeron retrospectivamente 818 estudios PET/TC con 18F-FDG positivos para detección de grasa parda, 742 exámenes realizados en población adulta y 76 PET/TC en población pediátrica. Se realizó una prueba de Chi cuadrado para comparar la distribución de las características entre pacientes adultos y pediátricos. RESULTADOS: Los adultos mostraron una tasa más alta de detección de grasa parda en mujeres (79% vs.61%, p < 0,001) y en pacientes con hiperglucemia (> 100mg/dl) (24% vs.16%, p = 0,02), no se encontraron diferencias significativas considerando el sobrepeso (IMC>25kg/m2) (22% vs.20%, p = 0,55). Teniendo en cuenta solo a mujeres, los adultos mostraron una tasa más alta de detección de grasa parda tanto en pacientes con hiperglucemia (83% frente a 42%, p < 0,001), como en pacientes con sobrepeso (80% frente a 67%, p = 0,005). En ambas poblaciones, la activación de la grasa parda ocurrió con mayor frecuencia en las estaciones frías; no hubo diferencias significativas en la distribución considerando la temporada de nacimiento (p = 0,2). CONCLUSIONES: El sexo, la glucemia y el IMC desempeñan un papel importante en la predicción de la activación de la grasa parda, con diferencias significativas entre adultos y niños. Se confirma que la exposición al frío es un factor de predicción importante, mientras que la temporada de nacimiento no es significativa
PURPUSE: To analyze epidemiological and anthropometric features of patients with brown adipose tissue (BAT) activation detected by fluorine18-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT). MATERIAL AND METHODS: From 2005 to 2017, 818 18F-FDG PET/CT studies positive for BAT detection were retrospectively included, 742 examinations performed on the adult population and 76 PET/CT on the pediatric population. A Chi-squared test was performed to compare features distribution between the adult and pediatric patients. RESULTS: Adults showed a higher rate of BAT detection in females (79% vs.61%, p < 0.001) and in hyperglycaemic patients (>100mg/dL) (24% vs.16%, p = 0.02), no significant difference was found with regard to overweight patients (BMI>25kg/m2) (22% vs.20%, P=.55). Considering females only, the adults showed a higher rate of BAT detection both in hyperglycaemic (83% vs.42%, p < 0.001) and overweight patients (80% vs.67%, p = 0.005). In both populations BAT activation happened more frequently in cold seasons; there was no significant distribution difference with regard to season of birth (p = 0.2). CONCLUSIONS: Sex, glycemia and BMI play a major role in predicting BAT activation, with significant differences between adults and pediatric patients. Cold exposure is confirmed as an important predicting factor, while season of birth is not significant
Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Adipose Tissue, Brown/diagnostic imaging , Aging/physiology , Positron Emission Tomography Computed Tomography/methods , Overweight/diagnostic imaging , Overweight/epidemiology , Thermogenesis/physiology , Adipose Tissue, Brown/physiology , Body Mass Index , Italy/epidemiology , Organ Specificity , Overweight/physiopathology , Retrospective Studies , ComorbidityABSTRACT
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Subject(s)
Humans , Male , Middle Aged , Positron Emission Tomography Computed Tomography/methods , Fluorodeoxyglucose F18 , Radiopharmaceuticals , Cystitis/diagnostic imagingABSTRACT
PURPOSE: To analyze epidemiological and anthropometric features of patients with brown adipose tissue (BAT) activation detected by fluorine18-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT). MATERIAL AND METHODS: From 2005 to 2017, 818 18F-FDG PET/CT studies positive for BAT detection were retrospectively included, 742 examinations performed on the adult population and 76 PET/CT on the pediatric population. A Chi-squared test was performed to compare features distribution between the adult and pediatric patients. RESULTS: Adults showed a higher rate of BAT detection in females (79% vs. 61%, P<0.001) and in hyperglycaemic patients (>100mg/dL) (24% vs. 16%, P=0.02), no significant difference was found with regard to overweight patients (BMI>25kg/m2) (22% vs. 20%, P=.55). Considering females only, the adults showed a higher rate of BAT detection both in hyperglycaemic (83% vs. 42%, P<0.001) and overweight patients (80% vs. 67%, P=0.005). In both populations BAT activation happened more frequently in cold seasons; there was no significant distribution difference with regard to season of birth (P=0.2). CONCLUSIONS: Sex, glycemia and BMI play a major role in predicting BAT activation, with significant differences between adults and pediatric patients. Cold exposure is confirmed as an important predicting factor, while season of birth is not significant.