Figure 1: A modern backscatter unit showing a passenger being screened.

Source: SCENIHR, Health effects of security scanners for passenger screening (based on X-ray technology), (2012),
 3.3 Technology and 3.4 Safety systems, pp.18-22

Security Scanners

Table 1: Tissue weighting factors according to ICRP 103 (ICRP 2007)

Table 2: Measured effective doses for various security scanners

Table 3: Modelled organ equivalent doses from backscatter scanners

Figure 1: A modern backscatter unit showing a passenger being screened.

Figure 2: A modern transmission unit with the side maintenance panel removed.