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The March issue of Ultrasound in Obstetrics & Gynecology includes a study evaluating the cost-effectiveness of performing an ultrasound assessment before cell-free DNA analysis for fetal aneuploidy screening, a study investigating the impact of prenatal exome sequencing on perinatal outcome, a prospective study assessing the potential of lower uterine segment thickness in identifying women at risk of Cesarean delivery following labor induction, and a systematic review and meta-analysis assessing the diagnostic accuracy of individual ultrasound signs for detecting adnexal torsion.

Read the newly updated ISUOG Practice Guidelines on the performance of fetal MRI.

The January issue of Ultrasound in Obstetrics & Gynecology includes a systematic review and meta-analysis investigating perinatal outcome following blastocyst- vs cleavage-stage embryo transfer, two multicenter studies on cytomegalovirus infection in pregnancy, and a follow-up study of a multicenter trial, which is the first to report on the long-term mortality and morbidity of cases receiving transplacental treatment for fetal supraventricular tachyarrhythmia. This issue also includes the newly updated ISUOG Practice Guideline on the performance of first-trimester ultrasound scan.

The December issue of Ultrasound in Obstetrics & Gynecology includes a prospective study investigating the utility of a machine-learning-based model for predicting pre-eclampsia, two studies on anal sphincter trauma and a study comparing fetal and neonatal sonographic parameters of brain ventricular size. Also in the issue are the first systematic review and meta-analysis to report on the incidence of congenital heart disease in fetuses with premature atrial contractions and an accompanying Editorial by Julene Carvalho proposing a systematic management protocol for cases with rhythm irregularities.

ISUOG's Visual Encyclopedia (VISUOG) chapter on Cervical Teratomas is open access this December. This month we have a discount code to become an ISUOG member and view VISUOG for an entire year.

ISUOG's Visual Encyclopedia (VISUOG) chapter on Normal Early Pregnancy is open access this November. This month we have a discount code to become an ISUOG member and view VISUOG for an entire year.

The August issue of Ultrasound in Obstetrics & Gynecology includes a multicenter study developing and validating radiomics models to predict high-risk endometrial cancer, a prospective study providing insight into ultrasound features observed in asymptomatic women with endometrial pathology, and a systematic review and meta-analysis investigating the true incidence and outcomes of brain abnormality in surviving children following laser surgery for twin-to-twin transfusion syndrome. The August issue also features two novel studies providing complementary evidence supporting the role of uteroplacental dysfunction in preterm birth and discussing the potential of placental biomarkers in the prediction of preterm delivery in the first trimester. This month also sees the release of an Early View version of ISUOG Practice Guidelines on the role of ultrasound in the prediction of spontaneous preterm birth.

The December issue of Ultrasound in Obstetrics & Gynecology includes a State-of-the-Art Review discussing the rationale for fetoscopic repair of complex gastroschisis, a study demonstrating evidence of SARS-CoV-2 vertical transmission according to the WHO criteria, a study showing similar characteristics of ectopic pregnancies prior to vs during the COVID-19 pandemic and a study finding that transvaginal sonography determines accurately the extent of infiltration of rectosigmoid deep endometriosis. Also in the issue, find out who were the all-important contributors to UOG’s peer-review process in 2021.

The November issue of Ultrasound in Obstetrics & Gynecology includes a systematic review identifying perinatal risk factors for neurodevelopmental impairment after laser surgery for twin–twin transfusion syndrome, a study showing a reduction in the rate of preterm birth during COVID-19 pandemic restriction measures in Melbourne, Australia, a cost-effectiveness analysis demonstrating a reduction in disease prevalence and health-service costs associated with a model of first-trimester prediction and prevention of preterm pre-eclampsia, and a secondary analysis of a RCT finding no difference in psychological response to early miscarriage and treatment satisfaction after expectant management vs misoprostol treatment.

Our President, Professor Tom Bourne, considers the psychological impact of baby loss: Baby loss is often a taboo subject. It is estimated, that 23 million miscarriage take place every year worldwide with 44 couples losing their pregnancy every minute. For Baby Loss Awareness 2021, ISUOG is asking our community to recognise the psychological impact and extend their care beyond “diagnosis and treatment” for couples experiencing baby loss

The January 30th anniversary special issue of Ultrasound in Obstetrics & Gynecology is completely free to access. The issue includes a number of insightful Opinions from leaders in the field, including Stuart Campbell’s recollections of how ISUOG and the Journal were born, Katia Bilardo’s reflections on how the Society has evolved, Kurt Hecher’s account of how intrauterine surgery has advanced over the last three decades and Roberto Romero’s commentary on the prediction and prevention of preterm birth. Also included are high-impact research papers from influential groups which highlight the breadth of topics in which ultrasound plays an instrumental or supporting role. In addition, find out who won our cover-image competition and admire the shortlisted images in our Gallery.

One in 12 partners experience post-traumatic stress after miscarriage, suggests a new study. The research, led by Imperial College London, surveyed over 100 couples who had experienced early stage pregnancy loss (miscarriage or ectopic pregnancy before 12 weeks).

游离DNA的检测能否用于妊娠后胎儿 颈项透明层（NT）增厚的评估？

Deberia de usarse la prueba de ADN celular libre en embarazos con translucencia nucal fetal aumentada?

Should cell-free DNA testing be used in pregnancy with increased fetal nuchal translucency?

The May issue of Ultrasound in Obstetrics & Gynecology includes an Opinion presenting ultrasound images of fetal abnormalities before 11 weeks, a ‘How to’ article on performing lung ultrasound in pregnant women with suspected COVID-19, a study assessing the impact of the Growth Assessment Protocol program on stillbirth rate in over 11 million births, and a study on whether cell-free DNA testing should be used in pregnancy with increased fetal nuchal translucency. Also online this month are new ISUOG Practice Guidelines on the role of ultrasound in the diagnosis and management of congenital infection, and updated Interim Guidance on COVID-19 during pregnancy and puerperium.

11-13周常规超声检查对双胎胎儿出生缺陷的诊断

Diagnostico de defectos fetales en embarazos gemelares al examen ultrasonográfico de rutina a las 11–13 semanas

Diagnosis of fetal defects in twin pregnancies at routine 11–13-week ultrasound examination