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The aim of this work is to verify the potential use of GAFchromic(TM) EBT3 and FILMQA(TM) pro software for patient specific quality assurance (QA) for stereotactic radiosurgery (SRS) and stereotactic body radiotherapy (SBRT) treatment plans in clinical routine use. In particular, encephalic, pulmonary and lymph node treatments plans were selected for this study. The agreement between the calculated and measured dose distributions were evaluated in terms of ɣ index with 3%3mm, 2%2mm, 1.5%1.5mm and 3%1.5mm criteria. The obtained results were then compared to the routine pre-treatment verification method which uses electronic portal imaging device (EPID) and EPIQA analysis software. EBT3-FilmQA method results show a mean ɣ index passing rate >95% with 2%1.5mm analysis criteria and an improvement of about 7% compared with EPID-EPIQA method results.

During the restoration works of the Sant’Agata La Vetere church in Catania, a campaign of archaelogical excavations was conducted in order to study the complex site around the religious building. According to tradition and to historical sources, the site was very interesting because a part of the church, in particular the crypt, was built incorporating an apse of the roman praetorium palace. Starting from this assumption, the present study is focused on the resolution of the chronological question about the different construction phases of the crypt. In agreement with archaeologists and architects, samples of bricks are collected in specific area. The ThermoLuminescence (TL) methodology was applied performing measurements on polymineral fine grain phases extracted from each brick. The Equivalent Dose (ED) values were evaluated from TL signals through Added Dose procedure. The annual Dose Rate (DR) was calculated using the radioactive content of samples estimated by ICP-MS analysis and environmental and cosmic dose rates obtained by in situ gamma measurements. From the obtained ages, three phases of construction were individuated: 3rd, 7th-8th and 17th centuries. In particular, the first one could be correspond with the end of the roman period, and it seems to confirm the archaeological hypothesis based on the historical sources. From a methodological point of view, the archaeological issue contributed to study the behaviour vs time of the alpha efficiency coefficient k. The results showed that the value obtained after 30 days has to be considered.