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Fast MR imaging in obstetrics.

Masako Nagayama¹, Yuji Watanabe, Akira Okumura

¹Department of Radiology, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki, Okayama 710-8602, Japan. md5210@kchnet.or.jp

Radiographics : a Review Publication of the Radiological Society of North America, Inc

|May 15, 2002

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Magnetic resonance (MR) imaging offers superior obstetric imaging when ultrasonography is insufficient. This non-ionizing radiation technique aids in diagnosing various pregnancy complications and characterizing pelvic masses.

Area of Science:

Radiology
Obstetrics
Medical Imaging

Background:

Ultrasonography (US) is the primary obstetric imaging tool, but its diagnostic capabilities are sometimes limited.
Magnetic resonance (MR) imaging provides an alternative, radiation-free imaging modality for enhanced obstetric evaluation.

Purpose of the Study:

To highlight the utility of MR imaging in various obstetric scenarios where US is insufficient.
To detail the diagnostic applications of MR imaging in pregnant patients with acute conditions and postpartum complications.

Main Methods:

Review of MR imaging applications in obstetrics, emphasizing its role beyond the first trimester and without contrast agents.
Discussion of fast MR imaging techniques for improved tissue contrast and multiplanar visualization.

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Main Results:

MR imaging aids in diagnosing acute obstetric conditions like uterine leiomyoma degeneration.
It facilitates characterization of pelvic masses, diagnosis of postpartum complications (abscess, hematoma, ovarian vein thrombosis), and evaluation of hydronephrosis via MR urography.
Advanced techniques like contrast-enhanced dynamic MR imaging and MR pelvimetry offer specific diagnostic insights for placental abnormalities, tumors, vascular malformations, and breech presentation.

Conclusions:

Fast MR imaging is a valuable tool in diverse obstetric settings, offering detailed anatomical information and aiding in the diagnosis of various maternal and fetal conditions.
MR imaging plays a crucial role in characterizing pelvic masses, managing postpartum complications, and diagnosing rare obstetric emergencies like ectopic pregnancy.