Magnetic resonance imaging of the fetus.

Technique
Magnet - Minimum 1.5 T.
Respiratory gating.
T2W HASTE.
T1 FLASH.
GRE.

5mm Thick sections with 2mm gap.

Indications
Intrauterine growth restriction (IUGR)
Oligohydromnios.
Placental Abnormalities like placeta acreta, placenta previa.
Molar pregnency.
Uterine leiomyoma.
Confirming ultrasound findings.


USES
CNS Anomolies -
Anencephaly.
Iniencephaly.
Holoproscencphaly.
corpus callosal agensis.
Chairi malformation.

Genitourinary anomolies -
Posterior urethral valve.
Congenital dysplastic kidney.

Thorax -
Congenial diaphragmatic hernia.
Pulmonary sequestration.
CPAM.
Bronchogenic cyst.

Twin pregnency -
Twin to twin transfusion syndrome.
Twin reversed arterial perfusion.

Placenta -
Placenta previa.
Placenta acreta.

Advantages -
Better contrast resolution.
Operator independent.
Large field of view.
Helfull in technically dificult patients.

Limitations -
Motion artifact.
Poor visualization of early gestation.
Expensive.
Patient discomfort.
Poor bone visualization.