|
TRANS-CEREBELLAR
DIAMETER (TCD) |
LANDMARKS |
- Axial view of the fetal cranium that is used to measure the BPD.
- Rotate the transducer caudally and the peanut shaped cerebellum will come into view.
- TCD is the widest diameter across the cerebellar hemispheres.
Normal
Transcerebellar Diameter (Table / Graph)
|
Variability |
|
12-18 wks ± 1.0 wks |
|
18-24 wks ± 1.8 wks |
|
24-30 wks ± 2.0 wks |
|
30-36 wks ± 2.4 wks |
|
36-42 wks ± 3.2 wks |