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. Author manuscript; available in PMC: 2012 Mar 6.
Published in final edited form as: AJR Am J Roentgenol. 2011 Feb;196(2):407–411. doi: 10.2214/AJR.10.4903

TABLE 2.

Scanning Parameters

Parameter 160-mm Group 140-mm Group 120-mm Group

Tube current (mAs) 110 ± 18 118 ± 40 112 ± 13
Tube voltage 119 ± 6.91 119 ± 2.94 120
Collimation 0.5 × 0.5 0.5 × 0.5 0.5 × 0.5
Modulation Yes Yes Yes
Rotation time (ms) 0.35 0.35 0.35
Heart rate during scan (beats/min) 59 ± 7.01 56 ± 5.74 58 ± 3.96
Duration of examination (min) 25 ± 7.16 24 ± 8.74 24 ± 7.75

Note—Values are mean ± SD unless otherwise indicated.