P15.03: Early visualization and measurement of the pericallosal artery: an indirect sign of the development of the corpus callosum

Pati, M.; Bertucci, Emma; Cani, C.; Latella, S.; Fenu, V.; Mazza, Vincenzo

doi:10.1002/uog.8504

Cited by 8 publications

(18 citation statements)

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“…In a crosssectional study including 80 patients attending for first-trimester aneuploidy screening, chorionic villus sampling, or amniocentesis, a reference range of the length of the pericallosal artery was provided from 14 weeks onward in relation to BPD and gestational age. 36 In agreement with Pati et al, 36 we also detected a high linear correlation (Ͼ0.9) between the length of the pericallosal artery and gestational age and the BPD, respectively. However, in that study, the developing vascular map was not analyzed.…”

Section: Discussionsupporting

confidence: 92%

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Sonographic Development of the Pericallosal Vascularization in the First and Early Second Trimester of Pregnancy

Keersmaecker

Pottel

Naulaers³

et al. 2018

AJNR Am J Neuroradiol

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BACKGROUND AND PURPOSE:Anomalies of the corpus callosum are rare. Routine scanning in midtrimester of the pregnancy often fails to identify defective development. The purpose of the study was to identify the pericallosal artery and all its main branching arteries during early gestation from the first trimester onward, to measure the length of the pericallosal artery during its development, and to establish a normal vascular map for each week of development.

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Section: Discussionsupporting

confidence: 92%

“…34,35 Adding power color Doppler flow in fetuses at rest for short time intervals, respecting thermal index and mechanic index, shows the developing pericallosal vasculature and its variants [36][37][38] in the first trimester either with 2D or 3D sonography.…”

Section: Discussionmentioning

confidence: 99%

Sonographic Development of the Pericallosal Vascularization in the First and Early Second Trimester of Pregnancy

Keersmaecker

Pottel

Naulaers³

et al. 2018

AJNR Am J Neuroradiol

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“…The cerebellar diameter increases rapidly throughout the first trimester from 6 mm at 11 weeks' gestation to 10 mm at 13 weeks . The pericallosal artery can be evaluated with color Doppler ultrasonography in a mid‐sagittal view …”

Section: Normal First‐trimester Anatomy Of the Fetal Brain As Seen Bymentioning

confidence: 99%

“…Agenesis of the corpus callosum (ACC) occurs in 0.3–0.7% of the general population yet is often part of a syndrome . The pericallosal artery runs sagittally over the corpus callosum and can be assessed in the diagnosis of ACC . The earliest direct sonographic visualization of the corpus callosum is possible from 16 weeks of gestation onwards and can be about 1 week earlier in female compared with male fetuses .…”

Section: Anomalies Of the Fetal Central Nervous Systemmentioning

confidence: 99%

“…An indirect marker of the presence or absence of the corpus callosum , however, is the course of the pericallosal artery. This vessel can be detected in >95% of normal fetuses at the 11 to 13 weeks' scan and should be visible in all fetuses when the BPD is over 20 mm . The use of three‐dimensional ultrasound may help in improving detection rates .…”

Section: Anomalies Of the Fetal Central Nervous Systemmentioning

confidence: 99%

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Sonographic detection of central nervous system defects in the first trimester of pregnancy

et al. 2016

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The fetal central nervous system can already be examined in the first trimester of pregnancy. Acrania, alobar holoprosencephaly, cephaloceles, and spina bifida can confidently be diagnosed at that stage and should actively be looked for in every fetus undergoing first-trimester ultrasound. For some other conditions, such as vermian anomalies and agenesis of the corpus callosum, markers have been identified, but the diagnosis can only be confirmed in the second trimester of gestation. For these conditions, data on sensitivity and more importantly specificity and false positives are lacking, and one should therefore be aware not to falsely reassure or scare expecting parents based on first-trimester findings. This review summarizes the current knowledge of first-trimester neurosonography in the normal and abnormal fetus and gives an overview of which diseases can be diagnosed.

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Assessment of pericallosal artery at 11–14 weeks of gestation: Cohort study and meta‐analysis

Vasciaveo

Rizzo

Khalil

et al. 2022

J of Clinical Ultrasound

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Objectives: To report the rate of visualization of the pericallosal artery (PCA) in the first trimester of pregnancy (11-14 weeks).Methods: Prospective observational study of consecutive fetuses undergoing first trimester risk assessment for chromosomal anomalies. The presence of PCA was assessed in a midsagittal view of fetal brain using high-definition power Color Doppler. A normal course of the PCA was defined as the visualization of an artery emerging from the anterior cerebral artery running parallel the corpus callosum (CC).The reference standard was the visualization of CC and PCA between the 20 and 22 weeks of gestation. We also performed a systematic review and meta-analysis of the published literature. Multivariate logistic regression and random-effect metaanalyses of proportion were used to analyze the data.Results: Cohort study: Five-hundred women were included. PCA was identified trans-abdominally or transvaginally at 11-14 weeks of gestation in 98.8% (95% CI 97.4-99.6: 494/500); of the four cases of PCA not identified one had a diagnosis of complete agenesis of the corpus callosum during the anomaly scan which was confirmed at birth. Systematic review of the published literature: Six studies (1093 fetuses, including the present series) were included. The PCA was detected at the 11-14 weeks scan and confirmed to co-exist with a normal CC at time of the anomaly scan in 96.9% (95% CI 93.8-99.0); 20.6% (95% CI 5.7-41.7) of fetuses with no clear identification of the PCA at the 11-14 weeks scan had a normal appearance of the CC at the time of anomaly scan. Conclusion:Prenatal ultrasonography has a high diagnostic accuracy in detecting PCA in the first trimester. Visualization of the PCA at the time of 11-14 scan is highly specific for the presence of a normal CC later in pregnancy.

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P15.03: Early visualization and measurement of the pericallosal artery: an indirect sign of the development of the corpus callosum

Cited by 8 publications

References 0 publications

Sonographic Development of the Pericallosal Vascularization in the First and Early Second Trimester of Pregnancy

Sonographic Development of the Pericallosal Vascularization in the First and Early Second Trimester of Pregnancy

Sonographic detection of central nervous system defects in the first trimester of pregnancy

Assessment of pericallosal artery at 11–14 weeks of gestation: Cohort study and meta‐analysis

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