From: Pelvic cardiovascular magnetic resonance venography: venous changes with patient position and hydration status
Decubitus Position
Common Femoral Vein Area (mm2)
Dehydrated
Hydrated
P value
Dependent
134 ± 36
135 ± 32
0.95
Ante-dependent
29 ± 17
36 ± 22
0.27
< 0.0001