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Inicio Radiología (English Edition) Resting state functional magnetic resonance imaging in attention deficit hyperac...
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Vol. 62. Issue 2.
Pages 139-147 (March - April 2020)
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Vol. 62. Issue 2.
Pages 139-147 (March - April 2020)
Original articles
Resting state functional magnetic resonance imaging in attention deficit hyperactivity disorder
Resonancia magnética funcional de reposo en el trastorno por déficit de atención e hiperactividad
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M.J. Carmona Franceschia,c,
Corresponding author
mjcarmonaf@gmail.com

Corresponding author.
, J.L. Ascencio Lancherosa,b,c, J.F. Ochoa Gómeza, M.T. Rueda Nobmanna,b, J.H. Donado Gómeza,d, L. Blazicevich Carrillob
a Universidad de Antioquia, Facultad de Medicina, Medellín, Colombia
b Instituto Neurológico de Colombia, Medellín, Colombia
c Escanografía Neurológica, Medellín, Colombia
d Hospital Pablo Tobon Uribe, Medellín, Colombia
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Table 1. Functional connectivity between the anterior cingulate cortex and other regions explored in ADHD patients and controls.
Table 2. Summary of studies in resting-state functional magnetic resonance in ADHD and the different techniques used.
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Abstract
Objective

To explore whether children and adolescents with attention deficit/hyperactivity disorder (ADHD) have altered the functional connectivity between the executive control network and the default mode network.

Methods

Exploratory study of a diagnostic test, prospective, case and control design. A total of 56 participants were recruited consecutively (29 inattentive or combined ADHD subtype and 27 controls) between 7 and 16 years old, male, right dominance. DSM-5 was applied as reference test and a battery of neuropsychological tests to confirm the diagnosis and assess comorbidities. Resting state functional magnetic resonance imaging was performed as an index test. The application and evaluation of the tests was blind. The brain regions were chosen a priori and the region of interest technique was used. The functional connectivity of the anterior cingulate cortex (ACC) was evaluated with: the precuneus (P), the posterior cingulate cortex (PCC) and the dorsomedial prefrontal cortex (DMPC).

Results

The functional connectivity in each of the associations evaluated in the patients with ADHD compared with the controls were: P_D = 0.41 vs 0.44; CCP_D = 0.43 vs 0.53; CPDM_D = 0.75 vs. 0.79; P_I = 0.40 vs 0.41; CCP_I = 0.48 vs 0.53; CPDM_I = 0.76 vs. 0.72). D: right side I: left side. Value of p > 0.05.

Conclusion

Cerebral functional connectivity at rest is lower in ADHD patients when compared with healthy controls, however, the difference was not statistically significant.

Keywords:
Functional magnetic resonance imaging
Functional brain imaging
Attention deficit/hyperactivity disorder
ADDH
Resumen
Objetivos

Explorar si los niños y adolescentes con trastorno por déficit de atención e hiperactividad (TDAH) tienen alterada la conectividad funcional entre la red de control ejecutivo y la red neuronal por defecto.

Material y métodos

Estudio exploratorio de prueba diagnóstica, prospectivo, con diseño de casos y controles. Se reclutaron consecutivamente 56 participantes (29 con TDAH de tipo inatento o combinado y 27 controles) entre 7 y 16 años, de sexo masculino, dominancia derecha. Se aplicaron los criterios diagnósticos del DSM-5 como prueba de referencia y una batería de pruebas neuropsicológicas para confirmar el diagnóstico y evaluar comorbilidades. Se les realizó resonancia magnética funcional de reposo como prueba índice. La aplicación y evaluación de las pruebas fue ciega. Las regiones cerebrales se escogieron a priori y se usó técnica de región de interés. Se evaluó la conectividad funcional de la corteza del cíngulo anterior (CCA) con el precuneus (P), la corteza del cíngulo posterior (CCP) y la corteza prefrontal dorsomedial (CPDM).

Resultados

Las conectividades funcionales en cada una de las asociaciones evaluadas en los pacientes con TDAH comparado con los controles fueron: P_D = 0,41 vs. 0,44; CCP_D = 0,43 vs. 0,53; CPDM_D = 0,75 vs. 0,79; P_I = 0,40 vs. 0,41; CCP_I = 0,48 vs. 0,53; CPDM_I = 0,76 vs. 0,72). D: lado derecho I: lado izquierdo. Valor de p > 0,05.

Conclusión

La conectividad funcional cerebral en estado de reposo es menor en los pacientes con TDAH cuando se compara con controles sanos; sin embargo, la diferencia no fue estadísticamente significativa.

Palabras clave:
Resonancia magnética funcional
Imagen funcional del cerebro
Trastorno por déficit de atención e hiperactividad
TDAH

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