CTDIvol, injector pressure, and anaesthesia time
Table 3 describes CTDIvol, injector pressure, and anesthesia time for each group. The CTDIvol was 15.6 mGy and 8.5 or 9.4 mGy at high (120 kV and 150 mA) and low (80 kV and 250 mA) voltage, respectively. The remote-control injector measured the pressure injection from 45 to 118 psi. Correlation analysis revealed no significant differences between the concentration and pressure injections in the first phase. In the second phase, at 180 mg I/s of IDR, rate and volume positively correlated with pressure (rate: r = 0.79, P = 0.0001; volume: r = 0.79, P = 0.0001); CM concentration negatively correlated with pressure (r = -0.79, P = 0.0001). The mean anaesthesia time was 43.43±10.02 min. All the horses recovered uneventfully after anaesthesia.