Radiation Protection Dosimetry Advance Access originally published online on March 19, 2009
Radiation Protection Dosimetry 2009 133(3):165-170; doi:10.1093/rpd/ncp034
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The investigation of fetal doses in mantle field irradiation
ahin Güralp2
e Koca3
smail Çepni2
e1
1 Department of Radiation Oncology, Cerrahpa
a Medical Faculty, University of Istanbul, Istanbul, Turkey
2 Department of Obstetrics and Gynecology, Cerrahpasa Medical Faculty, University of Istanbul, Istanbul, Turkey
3 Private Sante Hospital, Istanbul, Turkey
4 Department of Radiation Oncology, Okmeydan
Education and Research Hospital, Istanbul, Turkey
* Corresponding author: songulkaracam{at}yahoo.com
Received November 7, 2008, amended February 11, 2009, accepted February 19, 2009
To determine clinically the fetal dose from irradiation of Hodgkin's disease during pregnancy and to quantify the components of fetal dose using phantom measurements. The fetal dose was measured with phantom measurements using thermoluminescent dosemeters (TLDs). Phantom measurements were performed by simulating the treatment conditions on an anthropomorphic phantom. TLDs were placed on the phantom 41, 44, 46.5 and 49.5 cm from the centre of the treatment field. Two TLDs were placed on the surface of the phantom. The estimated total dose to all the TLDs ranged from 8.8 to 13.2 cGy for treatment with 60Co and from 8.2 to 11.8 cGy for 4 MV photons. It was concluded that the doses in different sections were evaluated to investigate dose changes in different points and depths of fetal tissues in phantom. Precise planning and the use of supplemental fetal shielding may help reduce fetal exposure.