Single uterine axial fast acquisition magnetic resonance fetal survey: is it feasible?
J Matern Fetal Neonatal Med
; 14(2): 107-12, 2003 Aug.
Article
in En
| MEDLINE
| ID: mdl-14629091
ABSTRACT
OBJECTIVES:
To determine which non-biometric components of the ultrasound fetal survey can routinely be seen on a single fast acquisition magnetic resonance (MR) sequence aligned axial to the maternal uterus. STUDYDESIGN:
The non-biometric components of the routine fetal ultrasound examination were applied retrospectively to the initial MR single-shot fast spin-echo acquisition aligned axial to the maternal uterus in the normal fetus to determine whether these parameters could be routinely evaluated. Nineteen women with anatomically normal fetuses had a total of 31 MR studies performed for fetal or maternal indications, either as part of an indicated examination or as part of a study protocol approved by the institutional review board. The images in these 31 MR studies were reviewed by two independent examiners who were blinded to the other's assessment; concordance was necessary for a component to be adequately assessed. The Wilcoxon rank sum test was used to determine the effect of gestational age and fetal lie on the ability to assess non-biometric parameters.RESULTS:
Assessment was possible in 85% of the non-biometric parameters. Cord insertion, external genitalia and the four-chamber view of the heart were most problematic. In only two cases was the four-chamber view of the heart identified. Longitudinal lie allowed significantly more parameters (82%) to be evaluated than transverse lie (45%) (p < 0.003). No difference based on gestational age was found.CONCLUSION:
A single fast acquisition axial MR sequence can evaluate 85% of the non-biometric components of the fetal ultrasound survey. Fetal lie is an important confounder in the ability to resolve fetal anatomy with a single MR axial uterine acquisition.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pelvis
/
Prenatal Diagnosis
/
Uterus
/
Magnetic Resonance Imaging
/
Fetus
Type of study:
Diagnostic_studies
/
Evaluation_studies
Limits:
Adult
/
Female
/
Humans
/
Pregnancy
Language:
En
Journal:
J Matern Fetal Neonatal Med
Journal subject:
OBSTETRICIA
/
PERINATOLOGIA
Year:
2003
Document type:
Article
Affiliation country:
United States