Efficacy of breast shielding during head CT (CROSBI ID 619503)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Brnić, Zoran ; Klasić, Branimir ; Vidjak, Vinko ; Popić Ramač, Jelena
engleski
Efficacy of breast shielding during head CT
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.
scatter radiation ; exposure ; breast ; head CT
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Podaci o prilogu
2012.
objavljeno
Podaci o matičnoj publikaciji
EMAN workshop 2012
Podaci o skupu
EUROPEAN WORKSHOP ON OPTIMISATION OF RADIATION PROTECTION IN MEDICINE
poster
07.06.2012-09.06.2012
Beč, Austrija