Magnetic resonance imaging of the fetus

Garel, Catherine; Brisse, H.; Sebag, G.; Elmaleh, Monique; Oury, Jean‐François; Hassan, Mohammed

doi:10.1007/s002470050334

Cited by 128 publications

(76 citation statements)

References 27 publications

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“…4,5,10,11,28,29 In addition, fetal MR imaging identified abnormalities not detected by prenatal sonography in most (83%) patients; this difference is in agreement with prior studies and further supports the need for fetal MR imaging in cases of sonographically suspected ACC. 5,28,30,32,33 In most fetuses, the additional abnormalities were suggestive of a developmental etiology. In 5 fetuses (17%), there were extensive additional malformations identified by fetal MR imaging and suggestive of a genetic syndrome.…”

Section: Discussionmentioning

confidence: 99%

Agenesis of the Corpus Callosum: An MR Imaging Analysis of Associated Abnormalities in the Fetus

Tang¹,

Bartha²,

Norton³

et al. 2008

AJNR Am J Neuroradiol

127

102

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BACKGROUND AND PURPOSE:Anomalies associated with callosal agenesis (ACC) found postnatally have been well documented. However, to our knowledge, no detailed MR imaging analysis of associated anomalies has been reported in a large cohort of fetuses with ACC. This study will assess those anomalies and compare them with postnatal cohorts of ACC, to identify associated fetal brain abnormalities that may give insight into etiology and outcome.

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Section: Discussionmentioning

confidence: 99%

Agenesis of the Corpus Callosum: An MR Imaging Analysis of Associated Abnormalities in the Fetus

Tang¹,

Bartha²,

Norton³

et al. 2008

AJNR Am J Neuroradiol

127

102

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“…By this time, the fetus is well developed, and the risk of any teratogenic effect is believed to be minimal [35,36], but subtle disorders might not be visible before gestational week 23. Consequently, it is recommended that fetal MR imaging be performed after gestational week 23 [3,19,37,38,39], although, importantly, this is 1 week after the legal limit for termination of pregnancy in Japan. Some previous reports of fetal MR imaging have focused on the termination of pregnancy or fetal surgery [1,5,19].…”

Section: Discussionmentioning

confidence: 99%

Clinical Significance of Prenatal and Postnatal Heavily T2-Weighted Magnetic Resonance Images in Patients with Myelomeningocele

et al. 2015

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Purpose: To compare the utility and limitations of prenatal magnetic resonance (MR) imaging using half-Fourier acquisition single-shot turbo spin-echo (HASTE) with postnatal heavily T2-weighted imaging (hT2WI) for the evaluation of central nervous system abnormalities associated with myelomeningocele (MMC). Methods: Sixteen patients with MMC who had undergone pre- and postnatal MR imaging were included in this study. MR imaging, including HASTE, was undertaken in the 3rd trimester, and hT2WI was performed immediately after delivery. The precision with which each could distinguish MMC, hindbrain herniation and ventriculomegaly was compared retrospectively. Results: The skin defects and MMC sacs were clearly visible on prenatal HASTE images, although it was difficult to identify precisely the level of MMC compared with postnatal hT2WI, in which the detailed anatomical relationships of the spinal cord, neural placode and ventral nerve roots were evident in every case. Hindbrain herniation could be visualized on prenatal HASTE images, although its severity was difficult to evaluate because of the small size of the structures and neck flexion; again, the resolution was superior on postnatal hT2WI. For hydrocephalus, there were no significant differences in the diagnostic precision and ability to grade the severity between pre- and postnatal imaging. Conclusion: Prenatal HASTE imaging permits the diagnosis and understanding of the gross anatomy of MMC and associated hindbrain herniation and ventriculomegaly, but postnatal hT2WI is superior for evaluating detailed anatomy.

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“…Due to shared placental vasculature, when one twin dies there is often ischemic damage to the surviving monochorionic twin. Parenchymal damage is visualized as focal or diffuse areas of increased T 2 signal (62,73). Later findings include porencephaly, and decreased parenchymal volume (74).…”

Section: Cns Anomaliesmentioning

confidence: 99%

Obstetric MRI

Levine

2006

Magnetic Resonance Imaging

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Ultrasound is the imaging modality of choice for pregnant patients. However, MRI is increasingly utilized in patients in whom the sonographic diagnosis is unclear. These include maternal conditions unique to pregnancy such as ectopic pregnancy, placenta accreta, and uterine dehiscence. MRI is also being increasingly utilized in the assessment of abdominopelvic pain in pregnancy, in particular in assessment for appendicitis. Fetal MRI is performed to assess central nervous system (CNS) abnormalities and patients who are considering fetal surgery for conditions such as neural tube defects, congenital diaphragmatic hernia, and masses that obstruct the airway. In the future, functional MRI and fetal volumetry may provide additional information that can aid in our care of complicated pregnancies.

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Magnetic resonance imaging of the fetus

Cited by 128 publications

References 27 publications

Agenesis of the Corpus Callosum: An MR Imaging Analysis of Associated Abnormalities in the Fetus

Agenesis of the Corpus Callosum: An MR Imaging Analysis of Associated Abnormalities in the Fetus

Clinical Significance of Prenatal and Postnatal Heavily T2-Weighted Magnetic Resonance Images in Patients with Myelomeningocele

Obstetric MRI

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