Obstet Gynecol Sci.  2015 Jan;58(1):1-9. 10.5468/ogs.2015.58.1.1.

2014 First-trimester ultrasound forum from the Korean Society of Ultrasound in Obstetrics and Gynecology

• Oh SY
• Hong JS
• Seol HJ
• Hwang HS
• Park HS
• Kim K
• Ko HS
• Kwak DW
• Kim MY
• Park MH
• Oh MJ
• Park JS
• Kim SJ
• Korean Society of Ultrasound in Obstetrics and Gynecology Research Group

• KMID: 1994220
• DOI: http://doi.org/10.5468/ogs.2015.58.1.1

Abstract

A first-trimester ultrasound scan has become an essential part of antenatal care. The Korean Society of Ultrasound in Obstetrics and Gynecology held a first-trimester ultrasound forum on April 5, 2014. The forum aimed to present an updated review of the literature on the topic of first-trimester ultrasound in specific lectures and to host a panel discussion on several important issues regarding first-trimester scans. The forum provided evidence- and consensus-based best practice patterns for obstetricians in Korea. Here, we report the review and checklists presented from the forum.

Keyword

Korean Society of Ultrasound in Obstetrics and Gynecology; Nuchal translucency measurement; Pregnancy trimester, first; Ultrasonography

MeSH Terms

Checklist
Female
Gynecology*
Humans
Korea
Lectures
Nuchal Translucency Measurement
Obstetrics*
Practice Guidelines as Topic
Pregnancy
Pregnancy Trimester, First
Ultrasonography*

Figure

• 

  Fig. 1 Measurement of nuchal translucency (NT) and other landmarks.

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  Fig. 2 (A) Ultrasonography of a normal fetus at 12 weeks of gestation shows the butterfly sign of the choroid plexus on the biparietal diameter plane. (B) A fetus with holoprosencephaly at 13 weeks of gestation. The butterfly sign is absent, and a single ventricle is present on the biparietal diameter plane.

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  Fig. 3 Sagittal view of a normal fetus at 10 weeks of gestation shows normal physiologic hernia on abdomen. This hernia sac has disappeared after 12 weeks of gestation.

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  Fig. 4 (A) Cardiac axis measurement is taken on four-chamber view of a normal fetus at 12 weeks gestation. (B) Cardiac axis was increased in a fetus at 12 weeks of gestation, and this fetus was diagnosed with a double outlet right ventricle in second-trimester ultrasonography. R, right; L, left.

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