Batteryless NFC dosimeter tag for ionizing radiation based on commercial MOSFET
Metadatos
Mostrar el registro completo del ítemAutor
Pousibet Garrido, Antonio; Escobedo Araque, Pablo; Guirado Llorente, Damián; Palma López, Alberto José; Carvajal Rodríguez, Miguel ÁngelEditorial
Elsevier
Materia
MOSFET dosimeter NFC sensing tag Batteryless Smartphone
Fecha
2023-03-07Referencia bibliográfica
A. Pousibet-Garrido et al. Batteryless NFC dosimeter tag for ionizing radiation based on commercial MOSFET. Sensors and Actuators: A. Physical 354 (2023) 114295[https://doi.org/10.1016/j.sna.2023.114295]
Patrocinador
Junta de Andalucía (Spain), projects numbers PI-0505–2017 FEDER/Junta de Andalucía- Consejería de Economía y Conocimiento Project B-TIC-468-UGR18; Proyecto del Plan Nacional I + D: PID2019–104888GB-I00 and Proyectos I + D + i Junta de Andalucía 2018: P18-RT-3237; H2020 ELICSIR project (grant No. 857558); Grant IJC2020-043307-I funded by MCIN/AEI/ 10.13039/501100011033; European Union NextGenerationEU/ PRTRResumen
This paper reports the development, evaluation and validation of DosiTag, a dosimetric platform based on Near
Field Communication (NFC) technology. The designed system comprises two main parts: a passive NFC sensing
tag as the dosimeter unit, which includes a commercial P-channel MOSFET transistor as radiation sensor; and an
NFC-enabled smartphone running a custom-developed application as the reader unit. Additionally, a cloud
service based on the messaging protocol Message Queue Telemetry Transport (MQTT) has been implemented
using a broker/client architecture to allow the storage and classification of the patient’s data. The dosimeter tag
was designed using commercial low-power integrated circuits (ICs) and it can operate without any external
power supply or battery, being supplied by the smartphone through the radio frequency (RF) energy harvested
from the NFC link. The radiation dose is measured through the increase of the DMOS transistor source voltage
using the smartphone as the reader unit. Two tag prototypes have been characterized with a 6 MV photon beam
and radiation doses up to 57 Gy and 42 Gy, respectively. The achieved average sensitivity is (4.37 ± 0.04) mV/
Gy with a resolution of 2 cGy, which goes beyond the state-of-the-art of previous NFC dosimeters and places
DosiTag as a low-cost promising electronic platform for dose control in radiotherapy treatments.