How many CT exams in the US?

There's no single, publicly available database tracking the exact number of CT exams performed in the US each year. Data collection on this is decentralized and varies across providers. However, estimates exist based on various studies and reports. These estimates generally place the number of CT exams performed annually in the tens of millions. You'll find figures ranging from 70 million to over 100 million, depending on the source and year of the study. The wide range reflects differences in methodologies and data sources.