DESIGN OF A GENERALLY APPLICABLE ABDOMINAL SHIELD FOR REDUCING FETAL DOSE DURING RADIOTHERAPY OF COMMON MALIGNANCIES IN PREGNANT PATIENTS

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ATAROD M.; SHOKRANI P.; POURMOGHADAS A.

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Journal: International Journal of Radiation Research Year:2012 | Volume:10 | Issue:3-4 Page(s): 151-156

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Title

DESIGN OF A GENERALLY APPLICABLE ABDOMINAL SHIELD FOR REDUCING FETAL DOSE DURING RADIOTHERAPY OF COMMON MALIGNANCIES IN PREGNANT PATIENTS

Author(s)

ATAROD M. | SHOKRANI P. | POURMOGHADAS A. | Issue Writer Certificate

Keywords

FETAL DOSE

RADIOTHERAPY

PREGNANCY

FETAL SHIELD

Abstract

Background: In most cancer cases, the treatment choice for a pregnant patient is RADIOTHERAPY. In these patients, the abdomen is usually not exposed; therefore fetus exposure is due to peripheral dose (PD). The purpose of this study was to estimate the FETAL DOSE (the maximum PD in each PREGNANCY stage) for modalities available and to fabricate and evaluate a generally applicable FETAL SHIELD.Materials and Methods: PD values were measured for brain, breast and mediastinum irradiation in a whole body anthropomorphic phantom using a NE 2571 ionization chamber. An external shield was then designed to reduce the FETAL DOSE to the standard dose limit, 5 mSv.Results: The range of PD values as a function of distance from the field’s edge were as follows 1) 9.4-259 cGy for Mantel field; 2) 6.5-95 cGy for chest wall irradiation with 10 MeV electrons, 3) 8.5- 52.5 cGy for tangential field with Co-60 and 4) 4.8-7.8 cGy for brain RADIOTHERAPY with 9 MV photon.PD values for the same setups using the FETAL SHIELD were as follows: 1) 1.4-22 cGy, 2) 0.5-4 cGy, 3) 1.5-5 cGy and 4) under 1 cGy.Conclusions: The measured PD data sets can be used to estimate FETAL DOSE for specific treatment setups and PREGNANCY stages. The use of external shield designed in this research reduced the FETAL DOSE effectively to under the threshold (a 70-90% reduction), except for the final stages of PREGNANCY in Hodgkin’s patients.

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APA: Copy

ATAROD, M., SHOKRANI, P., & POURMOGHADAS, A.. (2012). DESIGN OF A GENERALLY APPLICABLE ABDOMINAL SHIELD FOR REDUCING FETAL DOSE DURING RADIOTHERAPY OF COMMON MALIGNANCIES IN PREGNANT PATIENTS. INTERNATIONAL JOURNAL OF RADIATION RESEARCH, 10(3-4), 151-156. SID. https://sid.ir/paper/286594/en

Vancouver: Copy

ATAROD M., SHOKRANI P., POURMOGHADAS A.. DESIGN OF A GENERALLY APPLICABLE ABDOMINAL SHIELD FOR REDUCING FETAL DOSE DURING RADIOTHERAPY OF COMMON MALIGNANCIES IN PREGNANT PATIENTS. INTERNATIONAL JOURNAL OF RADIATION RESEARCH[Internet]. 2012;10(3-4):151-156. Available from: https://sid.ir/paper/286594/en

IEEE: Copy

M. ATAROD, P. SHOKRANI, and A. POURMOGHADAS, “DESIGN OF A GENERALLY APPLICABLE ABDOMINAL SHIELD FOR REDUCING FETAL DOSE DURING RADIOTHERAPY OF COMMON MALIGNANCIES IN PREGNANT PATIENTS,” INTERNATIONAL JOURNAL OF RADIATION RESEARCH, vol. 10, no. 3-4, pp. 151–156, 2012, [Online]. Available: https://sid.ir/paper/286594/en

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