IFEG   20353
INSTITUTO DE FISICA ENRIQUE GAVIOLA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
DEVELOPMENT OF A HIGH-RESOLUTION RADIATION DOSIMETRY SYSTEM BASED ON FRICKE SOLUTIONS
Autor/es:
JOSE VEDELAGO; FACUNDO MATTEA; MAURO VALENTE
Lugar:
Cusco
Reunión:
Congreso; 14th INTERNATIONAL SYMPOSIUM OF SOLID STATE DOSIMETRY; 2014
Institución organizadora:
Soc. Peruana de Proteccion Radiologica
Resumen:
P { margin-bottom: 0.08in; direction: ltr; widows: 2; orphans: 2; }A:link { color: rgb(0, 0, 255); } Due to the growing complexity of modern medical procedures involving the use of ionizing radiation, dosimetry by non-conventional techniques is one of the research areas in the field of greatest interest nowadays. Tissue-equivalent high-resolution dosimetry systems capable of attaining continuous dose mapping are required. In this scenario, Fricke gel dosimetry is a very promising option for in-phantom dose measurements in complex radiation techniques. Implementation of this technique requires dedicated instruments capable of measuring and performing the immediate in situ analysis of the acquired data at the radiation facility. The versatility of Fricke gel dosimetry in different applications depending on the chemical and isotopic composition of the dosimeter extends its application to different high performance conventional and non-conventional radiation procedures involving diverse types of radiation treatments and also radiation diagnosis procedures. This work presents an integral dosimetry system, based on Fricke gel solutions and their analysis by optical techniques, aiming for an increase in the precision on dose determinations. The chemical synthesis and dosimeter preparation were accomplished at LIIFAMIRx facilities, following the procedures and protocols described in previous works. Additionally, specific instrumentation for optical sample analysis was completely designed and constructed at LIIFAMIRx facilities. The main outcome of this work was the development of a methodology that improves the integral dose determination performance by the pre-irradiation of Fricke gel dosimeters.