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Table 4 Imaging methods for each computed tomography protocol

From: The efficacy of contrast protocol in hepatic dynamic computed tomography: multicenter prospective study in community hospitals

  Protocol-A Protocol-B Protocol-C Protocol-D
Detector-rows 16 13 (33.3) 4 (12.9) 6 (40.0) 4 (28.6)
  64 26 (66.7) 27 (87.1) 9 (60.0) 10 (71.4)
Tube voltage <120KV 1 (2.6) 0 (0.0) 0 (0.0) 0 (0.0)
  120KV 36 (92.3) 29 (93.5) 15 (100.0) 14 (100.0)
  >120KV 2 (5.1) 2 (6.5) 0 (0.0) 0 (0.0)
Tube current Auto 33 (84.6) 29 (93.5) 14 (93.3) 14 (100.0)
  Fixed 6 (15.4) 2 (6.5) 1 (6.7) 0 (0.0)
Scan speed <0.5 4 (10.3) 2 (6.5) 1 (6.7) 0 (0.0)
  0.5 20 (51.3) 26 (83.9) 12 (80.0) 11 (78.6)
  0.5< 14 (35.9) 2 (6.5) 2 (13.3) 3 (21.4)
  Unknown 1 (2.6) 1 (3.2) 0 (0.0) 0 (0.0)
  1. Note; Data presented as number (%) of CT machines; KV, kilovolt.