1) A multi-hospital healthcare system evaluated the impact of an Image Gently and Image Wisely campaign to reduce unnecessary medical radiation from CT scans. 2) Results showed that between 2004-2014, CT usage decreased across all age groups while ultrasound usage increased, with MRI usage only increasing in pediatrics. By 2014 ultrasound became the predominant modality in pediatrics. 3) CT protocol optimization between 2011-2014 resulted in reduced radiation dose per scan for most head, chest, and abdomen/pelvis studies.