Figure 1. Bar graph depicts the number of incidental findings at lumbar spinal MR imaging per 500 cases per year and shows the increase in incidental findings by comparing the pre-PACS with the post-PACS years. PP = pre-PACS year, PT = PACS transition year, P-1 = post-PACS year 1, P-2 = post-PACS year 2, P-3 = post-PACS year 3.