Evidence map›Paper›PMID 33170104›Full record

ArticleRadiology2021

Variations in CT Utilization, Protocols, and Radiation Doses in COVID-19 Pneumonia: Results from 28 Countries in the IAEA Study.

Fatemeh Homayounieh, Ola Holmberg, Rashid Al Umairi, Sallam Aly, Algidas Basevičius, Paulo Roberto Costa, Adham Darweesh, Vesna Gershan, Pilvi Ilves, Desislava Kostova-Lefterova and 10 more

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In one paragraph

Article in Radiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
5.3field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

39 citing papers in PubMed, 80 citations in OpenAlex.

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  14. Chest CT in COVID-19 patients: A clinical need.Journal of medical radiation sciences · 2023
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  17. Review
  18. COVID-19 pneumonia: lessons learned, challenges, and preparing for the future.Diagnostic and interventional radiology (Ankara, Turkey) · 2022
    Article
  19. Observational
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

20 authors at 11 institutions in 16 countries.

Fatemeh HomayouniehFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0003-0402-4037
Ola HolmbergFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0001-6036-2319
Rashid Al UmairiFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0003-2724-5035
Sallam AlyFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0001-6610-410X
Algidas BasevičiusFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).
Paulo Roberto CostaFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0002-4712-1454
Adham DarweeshFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0002-9747-8574
Vesna GershanFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).
Pilvi IlvesFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).
Desislava Kostova-LefterovaFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0002-8357-7029
Simone Kodlulovich RenhaFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0001-7956-6864
Iman MohseniFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0002-8248-3354
Osvaldo RampadoFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0003-3078-5438
Natalia RotaruFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0003-3767-5872
Issahaku ShirazuFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).
Valentin SinitsynFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0002-5649-2193
Tajana TurkFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0003-1535-1359
Claire Van Ngoc TyFrom the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0001-7241-6361
Mannudeep K Kalra *From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0001-9938-7476
Jenia Vassileva *From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 75 Blossom Ct, Room 248, Boston, MA 02114 (F.H., M.K.K.); Radiation Protection of Patients Unit, International Atomic Energy Agency, Vienna, Austria (O.H., J.V.); The Royal Hospital, Muscat, Oman (R.A.U.); Alfa Scan Radiology Center, Cairo, Egypt (S.A.); Department of Radiology, Lithuanian University of Health Sciences, Kaunas, Lithuania (A.B.); Institute of Physics, University of São Paulo, São Paulo, Brazil (P.R.C.); Hamad Medical Corporation, Doha, Qatar (A.D.); Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia (V.G.); Tartu University Hospital, University of Tartu, Institute of Clinical Medicine, Department of Radiology, Tartu, Estonia (P.I.); Aleksandrovska University Hospital, Sofia, Bulgaria (D.K.L.); Institute of Radioprotection and Dosimetry, National Nuclear Energy Commission, Rio de Janeiro, Brazil (S.K.R.); Radiology Department, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran (I.M.); Medical Physics Unit, A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy (O.R.); Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova (N.R.); Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission, Accra, Ghana (I.S.); University Hospital, Lomonosov Moscow State University, Moscow, Russian Federation (V.S.); University Hospital Osijek, Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia (T.T.); and Department of Radiology, Hôpital Européen Georges Pompidou, Paris, France (C.V.N.T.).ORCID 0000-0002-1788-4186
Massachusetts General Hospital · USHarvard University · USInternational Atomic Energy Agency · ATAlexandrovska Hospital · BGAzienda Ospedaliera Citta' della Salute e della Scienza di Torino · ITGhana Atomic Energy Commission · GHIran University of Medical Sciences · IRLithuanian University of Health Sciences · LTLomonosov Moscow State University · RUTartu University Hospital · EEUniversidade de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background There is lack of guidance on specific CT protocols for imaging patients with coronavirus disease 2019 (COVID-19) pneumonia. Purpose To assess international variations in CT utilization, protocols, and radiation doses in patients with COVID-19 pneumonia. Materials and Methods In this retrospective data collection study, the International Atomic Energy Agency coordinated a survey between May and July 2020 regarding CT utilization, protocols, and radiation doses from 62 health care sites in 34 countries across five continents for CT examinations performed in patients with COVID-19 pneumonia. The questionnaire obtained information on local prevalence, method of diagnosis, most frequent imaging, indications for CT, and specific policies on use of CT in COVID-19 pneumonia. Collected data included general information (patient age, weight, clinical indication), CT equipment (CT make and model, year of installation, number of detector rows), scan protocols (body region, scan phases, tube current and potential), and radiation dose descriptors (CT dose index and dose length product). Descriptive statistics and generalized estimating equations were performed. Results Data from 782 patients (median age, 59 years [interquartile range, 15 years]) from 54 health care sites in 28 countries were evaluated. Less than one-half of the health care sites used CT for initial diagnosis of COVID-19 pneumonia and three-fourths used CT for assessing disease severity. CT dose index varied based on CT vendors (7-11 mGy;

Indexed as

Clinical ProtocolsInternationalityRadiation DosageAgedCOVID-19FemaleHumansLungMaleMiddle AgedRetrospective StudiesSARS-CoV-2Tomography, X-Ray Computed

Identifiers

PMID33170104
PMCPMC7673104
OpenAlexW3101646318

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