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Figure 1: Immobilization devices used in our hospital. (a) Three clamp thermoplastic mask. (b) Four clamp thermoplastic mask. (c) Knee rest. (d) Abdominal thermoplastic mask

Figure 1: Immobilization devices used in our hospital. (a) Three clamp thermoplastic mask. (b) Four clamp thermoplastic mask. (c) Knee rest. (d) Abdominal thermoplastic mask