Figure 6. Bar graph depicts the number of follow-up studies recommended per 500 cases per year and shows the increase in studies recommended 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.