Effect of Implementation of Picture Archiving and Communication System on Radiologist Reporting Time and Utilization of Radiology Services: A Case Study in Iran.

We aimed to determine the effect of PACS implementation on the radiologist reporting time and utilization of radiology services in a hospital in Iran. This study was conducted in three 6-month periods (before PACS implementation, immediately after the implementation, and 1 year after implementation). Data related to reporting time of CT examinations were collected from 5074 patients with 6613 examinations and compared using the Friedman test. The utilization rate of radiology services was conducted about CT scans and radiographies. Therefore, 17,862 patients with 36,321 radiographies and 7155 patients with 10,571 CT scans were evaluated, and the ratio of the number of examinations to the number of patients and patient days was compared in three periods. The mean of reporting time on CT scan examinations in the period of immediately after PACS was changed compared to the period of before PACS from 13.05 to 24.18 days and compared to 1 year after PACS implementation, to 4.14 days (P value < 0.05). The utilization rate in CT scans, 1 year after PACS increased at least 10% to 25% compared to the immediately after PACS and before implementing PACS. The utilization rate in radiographies, 1 year after PACS, increased at least 16% to 78% compared to the immediately after PACS and before PACS implementation. In conclusion, the mean of the radiologist reporting time for CT scans is significantly decreased by PACS in the long-term. Additionally, the utilization rate of radiology services is increased in the short- and long-term after PACS implementation in most examinations of CT scan and radiography examinations.