Fig 1.
Pressure sensor on the left shoulder.
Fig 2.
A) and B) system 1: free-hanging radiation protection system (350 kg). C) and D) system 2: one-piece radiation protection apron (4.4 kg). E) system 3: two-piece radiation protection apron (6.6 kg). F) system 4: one-piece radiation protection coat without belt (6.7 kg). G) system 5: one-piece radiation protection coat with belt (7 kg).
Fig 3.
The shoulder load of the different radiation protection aprons averaged and their standard deviation over all movements is shown.
The load is listed both as average value over both shoulders and for each individual shoulder. The total weight of the free-hanging radiation protection system is significantly lower than the other systems investigated. Furthermore, the weight of the two-piece radiation protection apron is significantly lower than that of the one-piece radiation protection systems. For the one-piece radiation protection coat with and without a belt a significant difference between the right and left shoulder could be measured.
Fig 4.
Shoulder loads and their standard deviation during different movements when wearing different radiation protection aprons are shown.
The free-hanging radiation protection system showed a significant (p<0.05) difference in the weight on the shoulder while rotating upper body and with arm movement back and forth. For the one-piece radiation protection apron without belt, a significant (p<0.05) weight reduction on the shoulder was measured when the arms were in moving position (moving sequence 5), in contrast to the other moving positions (1–4).