CTA utilization for evaluation of suspected pulmonary embolism in a tertiary pediatric emergency department

•CT angiography orders for pulmonary embolism have been increasing without any increased detection of PE in children.•The netection of ancillary findings on chest CT angiography increased as the number of CT angiography exams has increased, but the rate of ancillary findings did not match the rate of CT angiography ordering. The number of CT angiography exam positive for ancillary findings but negative for PE increased along the number of exams.•Chest radiographs showed the same ancillary findings as in CT angiography in 38% of patients.