PELVIMETRY

Rojansky and co-workers correlated the sonographic and radiological assessment of the obstetric conjugate (1). They noted a good correlation (r = 0.8931, P<0.0001) between the two imaging modalities however CT remains the imaging modality of choice as it allows one to do additional pelvic measurements:

• Transverse diameter of pelvic inlet.
• Anteroposterior diameter of midpelvis.
• Anteroposterior diameter of interspinous diameter.

REFERENCES

1. Rojansky N, Tanos V, Lewin A et.al. Sonographic evaluation of fetal head extension and maternal pelvis in cases of breech presentation. Acta Obstet Gynecol 1994;73:607-611.