Interpersonal violence has continued to be the main cause of maxillofacial fractures. Both IPV and MVA commonly involve alcohol and young male adults. They frequently require hospitalization and surgical intervention.

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Common cardiovascular conditions may occur in 1% of all pregnant women. The selection and methods of imaging studies require thoughtful planning. Use of radiation, radiopharmaceuticals, and contrast agents should be minimized. Pulmonary and cardiac CT angiography deliver minimal fetal radiation, and ventilation-perfusion scintigraphy presents relatively low fetal irradiation. Cardiac catheterization, coronary angiography, and electrophysiologic procedures, including complex interventions, also cause relatively low fetal exposure. Even nuclear cardiology procedures are unlikely to exceed negligible-risk (50 mGy cutoff) fetal radiation doses.

Breast tissue may receive substantial radiation doses during CT examinations. Bismuth shields effectively reduce breast exposure at the expense of increased noise and artifacts. Because bismuth shields reduce radiation transmission in all directions, posterior-to-anterior irradiation results in wasted exposure of posterior tissues. Similar breast radiation reductions can be achieved without shielding by globally reducing tube current. In general, more advanced methods of reducing exposure, including dose modulation and iterative reconstruction techniques, are superior if available.