FFF.1.2.2.2 Options for Patient Position on the X-Ray Table

The position of the patient in the X-Ray table is described in the section C.7.3.1.1.2 of PS 3.3.

The table below shows the direction cosines for each of the three patient directions (Left, Posterior, Head) related to the Table coordinate system (X t , Y t , Z t ), for each patient position on the X-Ray table:

Patient Position Patient left direction Patient posterior direction Patient head direction
Recumbent - Head First - Supine (1, 0, 0) (0, 1, 0) (0, 0, 1)
Recumbent - Head First - Prone (-1, 0, 0) (0, -1, 0) (0, 0, 1)
Recumbent - Head First - Decubitus Right (0, -1, 0) (1, 0, 0) (0, 0, 1)
Recumbent - Head First - Decubitus Left (0, 1, 0) (-1, 0, 0) (0, 0, 1)
Recumbent - Feet First - Supine (-1, 0, 0) (0, 1, 0) (0, 0, -1)
Recumbent - Feet First - Prone (1, 0, 0) (0, -1, 0) (0, 0, -1)
Recumbent - Feet First- Decubitus Right (0, -1, 0) (-1, 0, 0) (0, 0, -1)
Recumbent - Feet First -Decubitus Left (0, 1, 0) (1, 0, 0) (0, 0, -1)