Pregled bibliografske jedinice broj: 2083
Determination of patient surface dose from computed tomography examination
Determination of patient surface dose from computed tomography examination // Proceedings of the IRPA 9 / Duftschmid, K.E. (ur.).
Beč: International Radiation Protection Association, 1996. str. 429-429 (predavanje, nije recenziran, sažetak, znanstveni)
CROSBI ID: 2083 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Determination of patient surface dose from computed tomography examination
Autori
Vekić, Branko ; Kovačević, Sandra ; Ranogajec-Komor, Maria
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Proceedings of the IRPA 9
/ Duftschmid, K.E. - Beč : International Radiation Protection Association, 1996, 429-429
Skup
1996-International Congress on Radiation Protection
Mjesto i datum
Beč, Austrija, 14.04.1996. - 19.04.1996
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Nije recenziran
Sažetak
Computed tomography (CT) has become a major source of the popualtion exposure to diagnostic X-rays, and the knowledge 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 those in conventional X-ray imaging. This has required the development of specific techniques for assessing patient dose from CT. The aims of this work were to determine the doses delivered to various organs of patients undergoing CT of abdomen, thorax and head 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 and Shimadzu SCT-4500TE). The doses absorbed by different organs (gonads, thyroid, chest and eye lens) and by the examined parts of the body of 90 patients of various sex and ages were measured with TLD-700. The doses absorbed by different organs during the diagnostic CT examination of the body depended on the technical parameters, such as the number of scans, mAs, the thickness of scans, scanning times, tube voltage and other charactieristics, some of which depended on the type and severity of illness. Clinical parameters, such as patient size and composition and patient cooperation with regard to control and motion, also influence the dose and the image quality.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
