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FIGURE 1. Patient supported with different positioning aids on PET/CT table. (A) For whole-body PET/CT, arms are raised above head and supported by foam cushion to avoid truncation artifacts during scanning of thorax and abdomen (arrow). Furthermore, head is placed within foam cushion and may be additionally supported with vacuum-lock bag to prevent head motion (blue vacuum-lock bag). (B) Legs are supported by another foam mold to inflect patient's knees and to ensure comfortable positioning during scanning. (C) For head and neck scanning, vacuum-lock bag is deflated to fix head and neck within foam cushion (arrows). Thus, possible moving artifacts can be avoided. (D) Additionally, arms are placed on or beside patient's trunk to avoid truncation artifacts in head and neck area.
