Academy of Medical Sciences of I.R. Iran Archives of Iranian Medicine 1029-2977 23 11 2020 11 01 A Multicenter Survey on the Trend of Chest CT Scan Utilization: Tracing the First Footsteps of COVID-19 in Iran 787 793 10.34172/aim.2020.105 EN Amir Reza Radmard https://orcid.org/0000-0002-7462-118X Ali Gholamrezanezhad Seyed Ali Montazeri Amir Kasaeian Nemat Nematollahy Roghieh Molaee Langrudi Reza Javad Rashid Alireza Dehghan Ali Hekmatnia Ali Shakourirad Masoud Pezeshki Rad Reza Nafisi Moghadam Hashem Sharifian Ahmad Enhesari Marzieh Aalinezhad Ghazaleh Jamalipour Soufi Alireza Shakibafard Maryam Mohammadzadeh Reza Jalli Mehrdad Bakhshayeshkaram Taraneh Faghihi Langroudi Masoomeh Raoufi Alireza Abrishami Pooneh Dehghan Hooman Bahrami-Motlagh Hassan Hashemi Morteza Sanei Taheri https://orcid.org/0000-0002-8881-9058 Journal Article 10.34172/aim.2020.105 2020 07 18 2020 09 06 Background: Chest computed tomography (CT) scan has been used widely to diagnose COVID-19 in Iran. Objectives: To trace the footsteps of COVID-19 in Iran by exploring the trend in using chest CT scans and its economic impact on radiology departments. Methods: In this cross-sectional study, the number of imaging examinations from 33 tertiary radiology departments in 9 large cities of Iran was collected from September 23, 2019 to March 20, 2020 (Months 1 to 6) and the corresponding months in 2018–2019. Results: A 50.2% increase was noted in the chest CT scan utilization in 2019–2020 compared to 2018–2019. This increase was +15%, +15%, +27%, +2%, +1% in Months 1–5 of 2019–2020, respectively. In Month 6 of 2019–2020, a 251% increase in the acquisition of chest CT scans was observed compared to the Month 6 of 2018–2019. Following negative balance of revenue from Month 1 to 5 with respect to the inflation rate, the total income in Month 6 was further 1.5% less than the same Month in 2018–19. Conclusion: The observed peak in chest CT utilization in Month 3 prior to the surge in Month 6 could be explained by the seasonal influenza. However, unawareness about an emerging viral disease, i.e. COVID-19, might have underutilized chest CT in Months 4 and 5 before the official announcement in Month 6. The unbalanced increase in the workload of radiology departments in the shortage of cardiothoracic radiologists with the simultaneous decrease in income initiated a vicious cycle that worsened the economic repercussions of the pandemic.