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The interobserver reliability of ovarian volume measurement is improved with three-dimensional ultrasound, but dependent upon technique

2003; Elsevier BV; Volume: 29; Issue: 12 Linguagem: Inglês

10.1016/s0301-5629(03)01068-8

1879-291X

Nick Raine‐Fenning, B. K. Campbell, J. Clewes, I. R. Johnson,

Ovarian cancer diagnosis and treatment

The effect of measurement technique on the interobserver reliability of ovarian volume calculation from three-dimensional (3-D) ultrasound (US) data was investigated. Ovarian volume was calculated in 20 patients by two observers using both the "prolate ellipsoid formula" and a new 3-D rotational technique (VOCAL). There was a significant difference between observers in mean ovarian volume calculated by the prolate ellipsoid formula (31.54 mL vs. 26.54 mL: p < 0.05), which proved to be a significantly less reliable technique than 3-D rotational volume calculation with VOCAL. Image quality was significantly better (p < 0.001) and measurements were significantly more reliable (p < 0.05) in the B-plane than in the C- plane of the multiplanar display. Rotational measurement of ovarian volume from 3-D US data is significantly more reliable between observers than volume estimation from 2-D parameters using the prolate ellipsoid formula, but is dependent upon image quality, which is significantly better in the B-plane than in the C-plane.