OP04.06: Three-dimensional ultrasound parameters in the first trimester
نویسندگان
چکیده
منابع مشابه
The use of first trimester ultrasound.
OBJECTIVE To review the clinical indications for first trimester ultrasound. OUTCOME Proven clinical benefit from first trimester ultrasound. EVIDENCE MEDLINE search and bibliography reviews in relevant literature. VALUES Content and recommendations reviewed by the principal authors and the Diagnostic Imaging Committee of the Society of Obstetricians and Gynaecologists of Canada. Levels o...
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OBJECTIVE To review the biological effects and safety of obstetric ultrasound. OUTCOME Outline the circumstances in which safety may be a concern with obstetric ultrasound. EVIDENCE Medline was searched, and a review of a document on this subject published by Health Canada and of bibliographies from identified articles was conducted. VALUES Review by principal authors and the Diagnostic I...
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Objective The introduction of first trimester nuchal translucency measurement has resulted in earlier identification of foetuses with exencephaly. Exencephaly is an uncommon congenital malformation in which the flat bones of calvaria are absent leaving the brain completely exposed or protrudes through the defect in the cranial vault. Anencephaly may ensue as a result of prolonged exposure of th...
متن کاملUltrasound Markers of Chromosomal Anomalies in the First Trimester
Chromosomal anomalies are associated with considerable morbidity and mortality. The protocol for identifying these fetuses had for many years included a single clinical criterion of maternal age. Advances in biochemical screening combined with the excellent display of fetal dysmorphology afforded by technological advances in ultrasound equipment have resulted in a paradigm shift in the diagnosi...
متن کاملUltrasound Evaluation of Pregnancy in the First Trimester
The first trimester of pregnancy starts with the first day of the last menstrual period (LMP) and continues until the end of the twelfth week. Although, conception normally occurs two weeks after the LMP, the LMP is chosen as the start of the first trimester because it is a recognizable sign for most women. The term menstrual age and gestational age are used interchangeably, but should not be c...
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ژورنال
عنوان ژورنال: Ultrasound in Obstetrics and Gynecology
سال: 2007
ISSN: 0960-7692
DOI: 10.1002/uog.4433