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Fetal MR in the evaluation of pulmonary and digestive system pathology.

Martin C, Darnell A, Escofet C, Duran C, Pérez V - Insights Imaging (2012)

Bottom Line: Congenital malformations of the thorax, abdomen, and gastrointestinal tract are common.As various organs can be affected, accurate location and morphological characterization are important for accurate diagnosis.We describe the normal appearance of fetal thoracic, abdominal, and gastrointestinal structures on MRI, and we discuss the most common anomalies involving these structures and the role of MRI in their study. • To learn about the normal anatomy of the fetal chest, abdomen, and GI tract on MRI. • To recognize the MR appearance of congenital anomalies of the lungs and the digestive system. • To understand the value of MRI when compared to US in assessing fetal anomalies.

View Article: PubMed Central - PubMed

Affiliation: Radiology Department, UDIAT CD, Institut Universitari Parc Taulí-UAB, Sabadell, Spain.

ABSTRACT

Background: Prenatal awareness of an anomaly ensures better management of the pregnant patient, enables medical teams and parents to prepare for the delivery, and is very useful for making decisions about postnatal treatment. Congenital malformations of the thorax, abdomen, and gastrointestinal tract are common. As various organs can be affected, accurate location and morphological characterization are important for accurate diagnosis.

Methods: Magnetic resonance imaging (MRI) enables excellent discrimination among tissues, making it a useful adjunct to ultrasonography (US) in the study of fetal morphology and pathology.

Results: MRI is most useful when US has detected or suspected anomalies, and more anomalies are detected when MRI and US findings are assessed together.

Conclusion: We describe the normal appearance of fetal thoracic, abdominal, and gastrointestinal structures on MRI, and we discuss the most common anomalies involving these structures and the role of MRI in their study.

Teaching points: • To learn about the normal anatomy of the fetal chest, abdomen, and GI tract on MRI. • To recognize the MR appearance of congenital anomalies of the lungs and the digestive system. • To understand the value of MRI when compared to US in assessing fetal anomalies.

No MeSH data available.


Related in: MedlinePlus

Jejunal atresia. Fetus at 25 weeks’ gestation. a Fetal coronal single-shot fast spin-echo MR image and b fetal coronal T1-weighted gradient-echo flash image showing dilatation of the proximal portion of the small intestine (arrows). c X-ray after birth showing dilatation of the proximal intestinal loops. Opaque enema X-ray study showed microcolon, and jejunal atresia was discovered at surgery
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Fig10: Jejunal atresia. Fetus at 25 weeks’ gestation. a Fetal coronal single-shot fast spin-echo MR image and b fetal coronal T1-weighted gradient-echo flash image showing dilatation of the proximal portion of the small intestine (arrows). c X-ray after birth showing dilatation of the proximal intestinal loops. Opaque enema X-ray study showed microcolon, and jejunal atresia was discovered at surgery

Mentions: MRI detects dilatation of the small intestine proximal to the atresia; the stomach and duodenum may also be dilated. The signal intensity of the contents of the intestine varies in relation to the site of obstruction; the more distal the obstruction is, the lower the signal intensity on T2-weighted images and the higher the signal intensity on T1-weighted images [3] (Fig. 10). The colon may be small in caliber or impossible to identify. The more proximal the lesion is, the more likely the fetus will have polyhydramnios.Fig. 10


Fetal MR in the evaluation of pulmonary and digestive system pathology.

Martin C, Darnell A, Escofet C, Duran C, Pérez V - Insights Imaging (2012)

Jejunal atresia. Fetus at 25 weeks’ gestation. a Fetal coronal single-shot fast spin-echo MR image and b fetal coronal T1-weighted gradient-echo flash image showing dilatation of the proximal portion of the small intestine (arrows). c X-ray after birth showing dilatation of the proximal intestinal loops. Opaque enema X-ray study showed microcolon, and jejunal atresia was discovered at surgery
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3369121&req=5

Fig10: Jejunal atresia. Fetus at 25 weeks’ gestation. a Fetal coronal single-shot fast spin-echo MR image and b fetal coronal T1-weighted gradient-echo flash image showing dilatation of the proximal portion of the small intestine (arrows). c X-ray after birth showing dilatation of the proximal intestinal loops. Opaque enema X-ray study showed microcolon, and jejunal atresia was discovered at surgery
Mentions: MRI detects dilatation of the small intestine proximal to the atresia; the stomach and duodenum may also be dilated. The signal intensity of the contents of the intestine varies in relation to the site of obstruction; the more distal the obstruction is, the lower the signal intensity on T2-weighted images and the higher the signal intensity on T1-weighted images [3] (Fig. 10). The colon may be small in caliber or impossible to identify. The more proximal the lesion is, the more likely the fetus will have polyhydramnios.Fig. 10

Bottom Line: Congenital malformations of the thorax, abdomen, and gastrointestinal tract are common.As various organs can be affected, accurate location and morphological characterization are important for accurate diagnosis.We describe the normal appearance of fetal thoracic, abdominal, and gastrointestinal structures on MRI, and we discuss the most common anomalies involving these structures and the role of MRI in their study. • To learn about the normal anatomy of the fetal chest, abdomen, and GI tract on MRI. • To recognize the MR appearance of congenital anomalies of the lungs and the digestive system. • To understand the value of MRI when compared to US in assessing fetal anomalies.

View Article: PubMed Central - PubMed

Affiliation: Radiology Department, UDIAT CD, Institut Universitari Parc Taulí-UAB, Sabadell, Spain.

ABSTRACT

Background: Prenatal awareness of an anomaly ensures better management of the pregnant patient, enables medical teams and parents to prepare for the delivery, and is very useful for making decisions about postnatal treatment. Congenital malformations of the thorax, abdomen, and gastrointestinal tract are common. As various organs can be affected, accurate location and morphological characterization are important for accurate diagnosis.

Methods: Magnetic resonance imaging (MRI) enables excellent discrimination among tissues, making it a useful adjunct to ultrasonography (US) in the study of fetal morphology and pathology.

Results: MRI is most useful when US has detected or suspected anomalies, and more anomalies are detected when MRI and US findings are assessed together.

Conclusion: We describe the normal appearance of fetal thoracic, abdominal, and gastrointestinal structures on MRI, and we discuss the most common anomalies involving these structures and the role of MRI in their study.

Teaching points: • To learn about the normal anatomy of the fetal chest, abdomen, and GI tract on MRI. • To recognize the MR appearance of congenital anomalies of the lungs and the digestive system. • To understand the value of MRI when compared to US in assessing fetal anomalies.

No MeSH data available.


Related in: MedlinePlus