Naslov
Efficacy of breast shielding during head CT

Autori
Brnić, Zoran ; Klasić, Branimir ; Vidjak, Vinko ; Popić Ramač, Jelena

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, ostalo, znanstveni

Izvornik
EMAN workshop 2012 / - , 2012

Skup
EUROPEAN WORKSHOP ON OPTIMISATION OF RADIATION PROTECTION IN MEDICINE

Mjesto i datum
Beč, Austrija, 07.06.2012. - 09.06.2012

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
scatter radiation ; exposure ; breast ; head CT

Sažetak
In light of the increasing frequency of CT exams in last decades, the purpose of this prospective study was to investigate scatter radiation breast exposure during head CT and its dependence upon body constitution, to assess the efficacy of lead shielding for breast dose reduction, and to demonstrate feasibility of the procedure in clinical setting. Study included 49 randomly selected patients which underwent head CT. During CT one breast was covered with lead apron of 0.35- mm-equivalent lead density, and contralateral breast was left unshielded, so as each patient served as her own control. Radiation exposure wase measured by use of Li-F thermoluminescent dosimeters (TLDs), at skin of both breasts (D1, D2) and over the apron (D3). The amount of scatter radiation measured at the skin of the shielded breast was compared with that of the unshielded breast. The difference between the shielded and unshielded breast dose was significant (p=1.4 x 10-18). The doses at the skin of lead protected breast were by average factor of 2.33 (range, 1.06-8.00) lower than those at the unshielded breast. In other words, surface breast exposures have been reduced by 57% (range 6-87%) due to lead shielding. In conclusion, although the level of scatter radiation to the breast is generally low during head CT, the use of lead cover enables recognizable further reduction of the exposure, and is recommended as feasible and effective routine procedure of breast radiation protection.

Izvorni jezik
Engleski

Znanstvena područja
Kliničke medicinske znanosti

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