# C.7.3.1.1.2 Patient Position

Patient Position (0018,5100) specifies the position of the patient relative to the imaging equipment space. This attribute is intended for annotation purposes only. It does not provide an exact mathematical relationship of the patient to the imaging equipment.

When facing the front of the imaging equipment, Head First is defined as the patient’s head being positioned toward the front of the imaging equipment. Feet First is defined as the patient’s feet being positioned toward the front of the imaging equipment. Prone is defined as the patient’s face being positioned in a downward (gravity) direction. Supine is defined as the patient’s face being in an upward direction. Decubitus Right is defined as the patient’s right side being in a downward direction. Decubitus Left is defined as the patient’s left side being in a downward direction.

The Defined Terms are:

 HFP = Head First-Prone HFS = Head First-Supine HFDR = Head First-Decubitus Right HFDL = Head First-Decubitus Left FFDR = Feet First-Decubitus Right FFDL = Feet First-Decubitus Left FFP = Feet First-Prone FFS = Feet First-Supine

The Figure C.7.3.1.1.2-1 illustrates these defined terms for imaging equipment with a table, such as in X-Ray Angiography. The orientation of the patient related to gravity is always recumbent.

 [pic] [pic] Recumbent - Head First – Supine Recumbent - Head First - Prone [pic] [pic] Recumbent - Head First - Decubitus Right Recumbent - Head First - Decubitus Left [pic] [pic] Recumbent - Feet First – Supine Recumbent - Feet First - Prone [pic] [pic] Recumbent - Feet First - Decubitus Right Recumbent - Feet First - Decubitus Left

Figure C.7.3.1.1.2-1Representation of the eight Different Patient Positions on the X-Ray Table