Fig. 2

Illustration of the auxiliary device-assisted position, traditional position, surgical position, and auxiliary devices. (A, B) Representative patient positioning photographs (A) and the scout image (B) in Group A with assisted positioning. (C, D) Representative patient positioning photographs (C) and the scout image (D) in Group B with traditional positioning. In Group A, the shoulders are lowered, and the neck is elevated, resulting in less overlap between the neck and shoulders in the sagittal view; in the traditional position, the shoulders are moved forward, causing the neck to be obscured by the shoulders in the sagittal view. (E) Photograph of the auxiliary device. (F) Photograph of the surgical position. (G) Structural diagram of the auxiliary device