A device (35, 800) for obtaining a representation of the state of internal parts of a part of the organism, comprising a. a processing unit (801)； b. an interface (805) with a microwave transceiver (34)； C. a display unit (36)； where the processing unit (801) is arranged to: repeatedly send a control signal to a microwave transceiver (34) to generate a pulse of microwave radiation to radiate from at least one antenna (31) inside the part of the organism； receive signals from the microwave radiation received from the microwave transceiver (34)； analyze the signals received with respect to time and amplitude； eliminate data related to body movement, compare the analyzed signals with theoretical or measured reference data and to continuously measure and analyze signals of changes developed over time separated from body movements； determine the state of the internal part of the body from the comparison； characterized in that the processing unit (801) is arranged to support the elimination of an inverse Fourier transform of the measured data to the temporal domain and to use the first reflection as an indication of movement.Un dispositivo (35, 800) para obtener una representación del estado de partes internas de una parte del organismo, que comprende a. una unidad de procesamiento (801)； b. una interfaz (805) con un transceptor de microondas (34)； c. una unidad de visualización (36)； donde la unidad de procesamiento (801) está dispuesta para: enviar repetidas veces una señal de control a un transceptor de microondas (34) para generar un pulso de radiación de microondas a irradiar desde al menos una antena (31) al interior de la pieza del organismo； recibir señales de la radiación de microondas recibida desde el transceptor de microondas (34)； analizar las señales recibidas con respecto al tiempo y la amplitud； eliminar los datos relativos al movimiento corporal, comparar las señales analizadas con datos de referencia teóricos o medidos y para medir y analizar continuamen
