Time spatial labeling inversion pulse magnetic resonance angiography in pregnancy with adenomyosis

Time spatial labeling inversion pulse (Time-SLIP) is a non-contrast magnetic resonance angiography (MRA) technique. No cases in which this technique was used during pregnancy have been reported. We report herein two cases with adenomyosis of the same size and location that underwent Time-SLIP MRA during pregnancy. In case 1, the blood flow within the adenomyosis was poor, and the uterine blood flow toward the placenta was normal, resulting in no fetal growth restriction (FGR). In case 2, the blood flow within the adenomyosis was quite rich, and placental blood flow seemed decreased, resulting in severe FGR. As well as the Doppler ultrasonography, Time-SLIP MRA was useful for evaluating uterine blood flow during pregnancy. This is the first report of the use of Time-SLIP MRA during pregnancy.