A patient support device for positioning the patient comprising a support frame (1) and a chair (2) connected to each other, wherein the chair (2) comprises a seat portion (3) and a back portion (4) connected to each other. The back portion (4) is extending upward from the seat portion (3). The back portion (4) further comprises two opposite ends, a first end (5) and a second end (6), and the back portion (4) is connected at the second end (6) to the seat portion (3). The first end (5) of the back portion (4) determines horizontal axis A. The first end (5) of the back portion (4) is pivotally connected to the frame (1) by a rotating mechanism (7) so that the chair (2) is arranged to rotate around axis A.
