Figure 2. Examples of commercially available electronic portal imaging devices: (a) Electa iView system; (b) Varian PortalVision system; (c)Siemens BeamView system; and (d) Eliav PortPro, a portable system.
Figure 2. Examples of commercially available electronic portal imaging devices: (a) Electa iView system; (b) Varian PortalVision system; (c)Siemens BeamView system; and (d) Eliav PortPro, a portable system.