Pregled bibliografske jedinice broj: 2080
Patient surface doses in computerized tomography examinations
Patient surface doses in computerized tomography examinations // Proceedings of the Radiation protection in neighbouring countries in central Europe-1995 / Glavič-Cindro, D. (ur.).
Ljubljana, 1996. str. 45-48 (predavanje, nije recenziran, cjeloviti rad (in extenso), stručni)
CROSBI ID: 2080 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Patient surface doses in computerized tomography examinations
Autori
Vekić, Branko ; Kovačević, Sandra ; Ranogajec-Komor, Maria ; Duvnjak, Neda ; Marušić, P ; Anić, P ; Dolenčić, P.
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), stručni
Izvornik
Proceedings of the Radiation protection in neighbouring countries in central Europe-1995
/ Glavič-Cindro, D. - Ljubljana, 1996, 45-48
Skup
Radiation Protection in Neighbouring Countries in Central Europe-1995
Mjesto i datum
Portorož, Slovenija, 04.09.1995. - 08.09.1995
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Nije recenziran
Sažetak
Computerized tomography (CT) has become a major source of the population exposure to diagnostic X-rays, and acknowledge of the doses delivered by the CT equipment has become very important. Considerable efforts should be made to keep these doses to a reasonable minimum, without sacrificing the image quality. The conditions of exposure in CT are quite different from dose in conventional X-ray imaging. This has requireed the development of specific techniques for assessing patient dose from CT. The aim of this work were to determine the dose delivered to various organs of patients undergoing computed tomography of abdomen, thorax, pelvis and kidney as measured on the surface of the body and to estimate the risk to the patients. Dosimetric measurements were performed at two different CT scanners (Siemens SOMATOM DR-H ver. HC-1 and Shimadzu SCT-4500TE). The doses absorbed by different organs (gonads, chest, thyroid and eye lens) and by the examined part of the body of 95 patients of various sex and age were measured with TLD-700. The doses absorbed by different organs during the diagnostic CT examination of the body depend on the technical parameters, such as the number of scans, mAs, the thickness of scans, scanning times, tube voltage and other characteristics, some of each depend on the type and severity of illness. Clinical parameters, such as patient size and composition, and patient cooperation with regard to the control and motion, also influence the dose and the image quality. The highest dose measured in this study (89.19 mGy) was delivered to kindey during CT examination of this organ.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
