Every major imaging exam in the U.S., ranked by how often it’s performed.
Volumes are drawn from different years and definitions, so the ranking serves as a benchmark.
The annual X-Ray scan volume includes 320M dental scans. The average out-of-pocket cost for a dental scan is $66[12], and the price range is $25 – $750[13].
Avg. out-of-pocket cost and price range are directional benchmarks.
Mahesh et al., 2023
Mettler Jr et al., 2020
691M total imaging procedures − 275M (X-rays) − 93M (CT) − 2M (PET) ≈ 321M dental
Doctrow, 2025
Smith-Bindman et al., 2025
FDA, 2026
National Breast Cancer Foundation, 2025
Perelman School of Medicine at the University of Pennsylvania, 2026
8M only accounts for cardiac SPECTs. The exact number of annual SPECT scans in the U.S. is unclear.
Mettler Jr et al., 2020
Stefanini and Windecker, 2015
Lee and Harchandani, 2026