Acquisition
(0018,5100)
Patient Position
Keyword: PatientPosition
Patient position descriptor relative to the imaging equipment. Used for geometric orientation of the image.
Tag Attributes
- Tag ID
- (0018,5100)
- Compact
- 00185100
- Keyword
- PatientPosition
- VR
- CS — Code String
- VM
- 1
- Retired
- No
Module(s)
General Series Module
Engineering Notes
Drives anatomical orientation labels (L/R, A/P, S/I) in PACS viewers. Wrong position causes mirrored or flipped anatomy labels, a patient safety risk.
Troubleshooting
Flipped or mirrored anatomy orientation in PACS is usually caused by wrong Patient Position combined with incorrect Image Orientation (Patient). Verify both tags on the modality.
Common Values
| Value | Meaning |
|---|---|
| HFS | Head First-Supine |
| HFP | Head First-Prone |
| FFS | Feet First-Supine |
| FFP | Feet First-Prone |
| HFDR | Head First-Decubitus Right |
| HFDL | Head First-Decubitus Left |