Table 1 Ovarian length and signal intensity in pregnant women undergoing MRI with respect to ovarian appearance, ovarian stimulation and torsion
Final diagnosis | Normal ovaries at time of retrospective review (N = 27 patients, N = 53 ovaries) | Not stimulated, not torsion but in retrospective review asymmetric ovarian edema (N = 3) | Stimulated without torsion (N = 11) | Torsion without stimulation (N = 3) | Torsion with stimulation (N = 3) | PCOS (N = 3) (2 stimulated, 1 non-stimulated) |
|---|---|---|---|---|---|---|
Greatest ovarian diameter (cm) | 3.2 +/− 0.6 (2.1–4.8) | 4.5 +/− 0.6 (3.8–4.9) | 7.6 +/− 2.8 (4.5–13.4) | 5.6 +/− 0.9 (4.6–6.2) | 6 +/− 1.5 (4.7–7.7) | 8.8 +/− 4.8 (5.2–14.2) |
Contralateral greatest ovarian diameter (cm) | 2.5 +/− 0.6 (1.4–3.5) | 3.1 +/− 0.3 (2.8–3.4) | 5.4 +/− 1.2 (3.6–7.1) | 3.7 +/− 1.1 (2.7–4.9) | 3.9 +/− 1.7 (2.7–5.8) | 6.1 +/− 2.4 (4.6–8.9) |
Average difference in ovarian greatest diameter | 0.6 +/− 0.5 (0–2.2) | 1.3 +/− 0.8 (0.4–1.9) | 2.2 +/− 2.4 (0.1–7.1) | 2.6 +/− 1.3 (1.1–3.3) | 2.1 +/− 0.3 (1.9–2.5) | 2.7 +/− 2.4 (0.6–5.3) |
Average % difference in ovarian greatest diameter | 0.19 +/− 0.13 (0–0.51) | 0.29 +/− 0.16 (0.11–0.4) | 0.24 +/− 0.19 (0.02–0.63) | 0.33 +/− 0.19 (0.21–0.55) | 0.37 +/− 0.11 (0.25–0.44) | 0.26 +/− 0.13 (0.12–0.37) |
T1WI signal difference | 0 | 1 (33%) | 2 (18%) | 0 | 1 (33%) | 1 (33%) – T1 not available for 1 patient |
T2WI signal difference | 3 (12%) | 3 (100%) | 1 (9%) | 2 (67%) | 2 (67%) | 1 (33%) |
FS T2WI signal difference | 3 (12%) | 3 (100%) | 1 (9%) – FS T2WI not available for one patient | 2 (67%) – FS T2WI not available for one patient | 2 (67%) | 1 (33%) – FS T2WI not available for one patient |