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Table 2 Characteristics of the imaging studies

From: Incidence of thromboembolism in patients with COVID-19: a systematic review and meta-analysis

Author Study design Country Population Type of Imaging Total imaging performed Anticoagulant prophylaxis Indication for imaging CUS screening
Bompard [36] Retrospective cohort France All underwent CTPA CTPA 135
PE: 32
No PE: 103
Yes Clinical suspicion NR
Chen [37] Retrospective cohort China Inpatients underwent CTPA CTPA 25
PE: 10
No PE: 15
NR Clinical suspicion No
Franco-Lopez [38] Retrospective cohort Spain Inpatients underwent CTPA Angio CTs 18 NR Increase in D-Dimer No
Grillet [39] Retrospective cohort France Inpatients underwent CTPA CT scan All 100
PE: 23
No PE: 77
NR All severe cases No
Leonard-Lorant [40] Retrospective cohort France All underwent CT CTPA 106
PE: 32
No PE: 74
Yes, 46% Clinical suspicion 63%
Others 37%
No
Poyiadji [41] Retrospective cohort USA All underwent CTPA CTPA 328
PE:72
No PE: 256
Yes, partial NR NR
Marone [43] Retrospective cohort Italy Inpatients underwent CUS
Non-ICU
CUS 30 No Clinical suspicion Clinical suspicion
Cattaneo [42] Retrospective cohort Italy Inpatients underwent CUS
Non-ICU
CUS 64 Yes Screening Yes, asymptomatic
  1. NR Not reported, ICU Intensive care unit, VTE Venous thromboembolism, PE Pulmonary embolism, DVT Deep vein thrombosis, CTPA Computed tomography pulmonary angiography, CUS Compression ultrasonography