Imaging the pregnant patient for nonobstetric conditions: Algorithms and radiation dose considerations

被引:265
作者
Patel, Shital J.
Reede, Deborah L.
Katz, Douglas S.
Subramaniam, Raja
Amorosa, Judith K.
机构
[1] Long Isl Coll Hosp, Dept Radiol, Brooklyn, NY 11201 USA
[2] Winthrop Univ Hosp, Dept Radiol, Mineola, NY 11501 USA
[3] Univ Med & Dent New Jersey, Robert Wood Johnson Med Sch, Dept Radiol, New Brunswick, NJ USA
关键词
D O I
10.1148/rg.276075002
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Use of diagnostic imaging studies for evaluation of pregnant patients with medical conditions not related to pregnancy poses a persistent and recurring dilemma. Although a theoretical risk of carcinogenesis exists, there are no known risks for development of congenital malformations or mental retardation in a fetus exposed to ionizing radiation at the levels typically used for diagnostic imaging. An understanding of the effects of ionizing radiation on the fetus at different gestational stages and the estimated exposure dose received by the fetus from various imaging modalities facilitates appropriate choices for diagnostic imaging of pregnant patients with nonobstetric conditions. Other aspects of imaging besides radiation (ie, contrast agents) also carry potential for fetal injury and must be taken into consideration. Imaging algorithms based on a review of the current literature have been developed for specific nonobstetric conditions: pulmonary embolism, acute appendicitis, urolithiasis, biliary disease, and trauma. Imaging modalities that do not use ionizing radiation (ie, ultrasonography and magnetic resonance imaging) are preferred for pregnant patients. If ionizing radiation is used, one must adhere to the principle of using a dose that is as low as reasonably achievable after a discussion of risks versus benefits with the patient. (C) RSNA, 2007
引用
收藏
页码:1705 / 1722
页数:18
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