Table 1:

Summary of clip phantom study*

OSHSTCT ValueX-ray Tube Angle
AverageSD
Subtraction with0.1 ± 0.014.2 ± 1.3†0.9 ± 0.5†
Subtraction without0.1 ± 0.123.1 ± 1.9127.3 ± 86.3

  • * Data are expressed by mean ± SD.

  • † P < .05 compared with subtraction without OSHST.