First‐trimester ultrasound determination of chorionicity in twin pregnancy
Abstract
Objective: To determine the accuracy of ultrasound at 11–14 weeks' gestation in the diagnosis of chorionicity in twin pregnancy. Methods: This was a retrospective observational study of data obtained between 1999 and 2010. At the first‐trimester routine ultrasound scan, chorionicity was assigned according to the number of placental masses and T or λ‐signs for a single placental mass. Chorionicity was confirmed by histology or discordant sex at birth. Results: A total of 648 pregnancies were assigned chorionicity by first‐trimester ultrasound during the study period. Chorionicity was ascertained in 613 cases, either by histology (n = 340) or discordant sex (n = 273). Chorionicity was correctly assigned by ultrasound at 11–14 weeks in 612 of 613 pregnancies (accuracy 99.8%). Sensitivity and specificity for determining monochorionicity were 100% and 99.8%, respectively. Conclusions: First‐trimester ultrasound can be used to determine chorionicity reliably by noting the number of placental masses and T or λ‐signs. Determination of twin chorionicity is important and should be completed in the first trimester. Copyright © 2011 ISUOG. Published by John Wiley & Sons, Ltd.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Reporting distinguishing features (gender, unique markers, position in uterus) is critical to label twins correctly.
“reporting of distinguishing features (gender, unique markers, position in uterus), as it is critical to label twins correctly 55 .”
From <scp>ISUOG</scp> Practice Guidelines (updated): performance of the routine mid‐trimester fetal ultrasound scan (2022) · cites this paper as [55]
Cites
Martin, J. A., Hamilton, B. E., Sutton, P. D., Ventura, S. J., Menacker, F., & Munson, M. L. (2003) · PubMed · Cited by 907 · see citing works
The hidden mortality of monochorionic twin pregnancies
Sebire, N. J., Snijders, R. J. M., Hughes, K., Sepúlveda, W., & Nicolaides, K. H. (1997) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/j.1471-0528.1997.tb10948.x · Cited by 627 · see citing works
The lambda sign at 10–14 weeks of gestation as a predictor of chorionicity in twin pregnancies
Sepúlveda, W., Sebire, N. J., Hughes, K., Odibo, A. O., & Nicolaides, K. H. (1996) · Ultrasound in Obstetrics and Gynecology · doi:10.1046/j.1469-0705.1996.07060421.x · Cited by 357 · see citing works
Prediction of chorionicity in twin pregnancies at 10–14 weeks of gestation
Carroll, S. G. M., SOOTHILL, P. W., Abdel‐Fattah, S. A., Porter, H. J., Montague, I. A., & Kyle, P. M. (2002) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/j.1471-0528.2002.01172.x · Cited by 172 · see citing works
The “twin peak” sign: reliable evidence of dichorionic twinning
Finberg, H. J. (1992) · Journal of Ultrasound in Medicine · doi:10.7863/jum.1992.11.11.571 · Cited by 145 · see citing works
Chorionicity determination in twin pregnancies: how accurate are we?
Stenhouse, E., Hardwick, C., Maharaj, S., Webb, J., Kelly, T., & Mackenzie, F. (2002) · Ultrasound in Obstetrics and Gynecology · doi:10.1046/j.1469-0705.2002.00679.x · Cited by 103 · see citing works
Antenatal sonographic prediction of twin chorionicity
Lee, Y. M., Cleary‐Goldman, J., Thaker, H. M., & Simpson, L. L. (2006) · American Journal of Obstetrics and Gynecology · doi:10.1016/j.ajog.2006.06.039 · Cited by 99 · see citing works
Prospective determination of chorionicity, amnionicity, and zygosity in twin gestations
Scardo, J. A., Ellings, J. M., & Newman, R. (1995) · American Journal of Obstetrics and Gynecology · doi:10.1016/0002-9378(95)90619-3 · Cited by 96 · see citing works
Stagiannis, K. D., Sepúlveda, W., Southwell, D., Price, D. A., & Fisk, N. M. (1995) · American Journal of Obstetrics and Gynecology · doi:10.1016/0002-9378(95)90647-9 · Cited by 66 · see citing works
Bhide, A., Sankaran, S., Sairam, S., Papageorghiou, A. T., & Thilaganathan, B. (2009) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.6396 · Cited by 63 · see citing works
Self-citationLopriore, E., Sueters, M., Middeldorp, J. M., Klumper, F. J. C. M., Oepkes, D., & Vandenbussche, F. P. H. A. (2006) · American Journal of Obstetrics and Gynecology · doi:10.1016/j.ajog.2005.09.015 · Cited by 56 · see citing works
Fetal sexing by ultrasound in the second trimester: maternal preference and professional ability
Harrington, K., Armstrong, V., Freeman, J., Aquilina, J., & Campbell, S. C. (1996) · Ultrasound in Obstetrics and Gynecology · doi:10.1046/j.1469-0705.1996.08050318.x · Cited by 54 · see citing works
Echographic imagery of amniotic membranes in twin pregnancies.
Bessis, R., & Papiernik, E. (1981) · PubMed · Cited by 42 · see citing works
Chorionicity determination in twin pregnancies: double trouble?
Sepúlveda, W. (1997) · Ultrasound in Obstetrics and Gynecology · doi:10.1046/j.1469-0705.1997.10020079.x · Cited by 39 · see citing works
A Retrospective Study of the Accuracy of Sonographic Chorionicity Determination in Twin Pregnancies
Menon, D. K. (2005) · Twin Research and Human Genetics · doi:10.1375/twin.8.3.259 · Cited by 23 · see citing works
A Retrospective Study of the Accuracy of Sonographic Chorionicity Determination in Twin Pregnancies
Menon, D. K. (2005) · Twin Research and Human Genetics · doi:10.1375/1832427054253149 · Cited by 22 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
<scp>ISUOG</scp> Practice Guidelines: performance of first‐trimester fetal ultrasound scan
(2013) · Ultrasound in Obstetrics & Gynecology · doi:10.1002/uog.12342 · Cited by 621 · see citing works
Salomon, L. J., Alfirevic, Z., Berghella, V., Bilardo, C. M., Chalouhi, G. E., Da Silva Costa, F., Hernandez‐Andrade, E., Malinger, G., Munoz, H., Paladini, D., et al. (2022) · Ultrasound in Obstetrics & Gynecology · doi:10.1002/uog.24888 · Cited by 436 · see citing works
ISUOG Practice Guidelines (updated): performance of 11–14‐week ultrasound scan
International Society of Ultrasound in Obstetrics and Gynecology, Bilardo, C. M., Chaoui, R., Hyett, J. A., Kagan, K. O., Karim, J. N., Papageorghiou, A. T., Poon, L. C., Salomon, L. J., Syngelaki, A., et al. (2023) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.26106 · Cited by 283 · see citing works
Stirrup, O., Khalil, A. A., D’Antonio, F., & Thilaganathan, B. (2014) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.14640 · Cited by 122 · see citing works
Self-citationD’Antonio, F., Khalil, A. A., Dias, T., & Thilaganathan, B. (2013) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.12412 · Cited by 93 · see citing works
Self-citationFrcp, C. G., & de Silva, J. (2013) · Cited by 89 · see citing works
Gratacós, E., Ortiz, J. U., & Martínez, J. M. (2012) · Fetal Diagnosis and Therapy · doi:10.1159/000342751 · Cited by 87 · see citing works
Influence of chorionicity on perinatal outcome in a large cohort of Danish twin pregnancies
Oldenburg, A., Rode, L., Bødker, B., Ersbak, V., Holmskov, A., Jørgensen, F. S., Larsen, H., Larsen, T., Laursen, L., Mogensen, H., et al. (2011) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.10057 · Cited by 77 · see citing works
Stillbirths in singletons, dichorionic and monochorionic twins: a comparison of risks and causes.
Russo, F., Pozzi, E., Pelizzoni, F., Todyrenchuk, L., Bernasconi, D. P., Cozzolino, S., & Vergani, P. (2013) · European Journal of Obstetrics, Gynecology, and Reproductive Biology · doi:10.1016/j.ejogrb.2013.06.014 · Cited by 68 · see citing works
D'Antonio, F., Khalil, A., Dias, T., & Thilaganathan, B. (2013) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.12363 · Cited by 68 · see citing works
Self-citationMaruotti, G. M., Saccone, G., Morlando, M., & Martinelli, P. (2016) · European Journal of Obstetrics & Gynecology and Reproductive Biology · doi:10.1016/j.ejogrb.2016.04.023 · Cited by 64 · see citing works
Kalafat, E., Sebghati, M., Thilaganathan, B., & Khalil, A. A. (2018) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.19069 · Cited by 63 · see citing works
Self-citationD’Antonio, F., Khalil, A. A., Dias, T., & Thilaganathan, B. (2013) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.12430 · Cited by 61 · see citing works
Self-citationKhalil, A. A., D’Antonio, F., Dias, T., Cooper, D., & Thilaganathan, B. (2013) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.13253 · Cited by 58 · see citing works
Self-citationLuke, B., Gopal, D., Cabral, H., Stern, J. E., & Diop, H. (2017) · American Journal of Obstetrics and Gynecology · doi:10.1016/j.ajog.2017.04.025 · Cited by 56 · see citing works
Khalil, A. A., Khan, N., Bowe, S., Familiari, A., Papageorghiou, A. T., Bhide, A., & Thilaganathan, B. (2015) · American Journal of Obstetrics and Gynecology · doi:10.1016/j.ajog.2015.02.024 · Cited by 53 · see citing works
Self-citationTwin to twin transfusion syndrome
Miller, J. L. (2021) · Translational Pediatrics · doi:10.21037/tp-20-264 · Cited by 49 · see citing works
Prospective risk of late stillbirth in monochorionic twins: a regional cohort study
COLLABORATIVE, S. T. O. R. (2012) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.11110 · Cited by 46 · see citing works
Conte, G., Righini, A., Griffiths, P. D., Rustico, M., Lanna, M. M., Mackie, F. L., Pinelli, L., Prefumo, F., Persico, N., Igra, M. S., et al. (2018) · Radiology · doi:10.1148/radiol.2018171267 · Cited by 42 · see citing works
D’Antonio, F., Khalil, A. A., Mantovani, E., Thilaganathan, B., Hamid, R., Gandhi, H., Ellis, C., Deans, A. C., Peregrine, L., Breeze, A., et al. (2013) · Human Reproduction · doi:10.1093/humrep/det277 · Cited by 40 · see citing works
Self-citationD’Antonio, F., Khalil, A. A., & Thilaganathan, B. (2013) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/1471-0528.12467 · Cited by 37 · see citing works
Self-citationD’Antonio, F., Thilaganathan, B., Laoreti, A., & Khalil, A. A. (2017) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.18916 · Cited by 33 · see citing works
Self-citationPitfalls in assessing chorioamnionicity: novel observations and literature review
Lu, J., Cheng, Y. K. Y., Ting, Y. H., Law, K. M., & Leung, T. Y. (2018) · American Journal of Obstetrics and Gynecology · doi:10.1016/j.ajog.2018.02.010 · Cited by 33 · see citing works
Gezer, A., Raşhidova, M., Güralp, O., & Öçer, F. (2011) · Archives of Gynecology and Obstetrics · doi:10.1007/s00404-011-1973-z · Cited by 33 · see citing works
D'Antonio, F., Thilaganathan, B., Dias, T., & Khalil, A. (2017) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.17426 · Cited by 32 · see citing works
Self-citationACR Appropriateness Criteria ® Multiple Gestations
Glanc, P., Nyberg, D. A., Khati, N. J., Deshmukh, S. P., Dudiak, K. M., Henrichsen, T. L., Pōder, L., SHIPP, T. D., Simpson, L. L., Weber, T. M., et al. (2017) · Journal of the American College of Radiology · doi:10.1016/j.jacr.2017.08.051 · Cited by 30 · see citing works
Reference charts for fetal biometric parameters in twin pregnancies according to chorionicity
Júnior, E. A., Ruano, R., Javadian, P., Martins, W. P., Elito, J., Pires, C. R., & Filho, S. M. Z. (2014) · Prenatal Diagnosis · doi:10.1002/pd.4318 · Cited by 25 · see citing works
D'Antonio, F., Familiari, A., Thilaganathan, B., Papageorghiou, A. T., Manzoli, L., Khalil, A., & Bhide, A. (2016) · Acta Obstetricia et Gynecologica Scandinavica · doi:10.1111/aogs.13017 · Cited by 23 · see citing works
Self-citationEarly pregnancy assessment in multiple pregnancies
D’Antonio, F., & Bhide, A. (2013) · Best Practice & Research Clinical Obstetrics & Gynaecology · doi:10.1016/j.bpobgyn.2013.11.006 · Cited by 21 · see citing works
Self-citationControl of presacral bleeding in rectal surgery.
Lucarotti, M. E., ARMSTRONG, C. P., & Bartolo, D. C. C. (1991) · PubMed Central · Cited by 20 · see citing works
Allaf, M. B., Vintzileos, A. M., Chavez, M. R., Wax, J., Ravangard, S. F., Figueroa, R., Borgida, A., Shamshirsaz, A. A., Markenson, G. R., Davis, S., et al. (2013) · Journal of Ultrasound in Medicine · doi:10.7863/ultra.33.1.135 · Cited by 19 · see citing works
Li, N., Sun, J., Wang, J., Jian, W., Lu, J., Miao, Y., Li, Y., Chen, F., Chen, D., Ye, X., et al. (2021) · BMC Pregnancy and Childbirth · doi:10.1186/s12884-021-04285-4 · Cited by 18 · see citing works
D’Antonio, F., Khalil, A. A., Morlando, M., & Thilaganathan, B. (2015) · Fetal Diagnosis and Therapy · doi:10.1159/000369326 · Cited by 16 · see citing works
Self-citationMultifetal Gestations and Associated Perinatal Risks
Duffy, C. R. (2021) · NeoReviews · doi:10.1542/neo.22-11-e734 · Cited by 17 · see citing works
Allaf, M. B., Campbell, W. A., Vintzileos, A. M., Haeri, S., Javadian, P., Shamshirsaz, A. A., Ogburn, P. L., Figueroa, R., Wax, J., Markenson, G. R., et al. (2014) · Journal of Ultrasound in Medicine · doi:10.7863/ultra.33.9.1573 · Cited by 13 · see citing works
Algeri, P., Callegari, C., Mastrolia, S. A., Brienza, L., Tessitore, I. V., Paterlini, G., Incerti, M., Cozzolino, S., & Vergani, P. (2018) · The Journal of Maternal-Fetal & Neonatal Medicine · doi:10.1080/14767058.2018.1481036 · Cited by 13 · see citing works
Helfer, T. M., Eixarch, E., Bennasar, M., Martínez, J. M., & Gratacós, E. (2020) · Maternal-Fetal Medicine · doi:10.1097/fm9.0000000000000076 · Cited by 12 · see citing works
Committee Opinion No. 418: The Complete 11–14 Week Prenatal Sonographic Examination
Simula, N. K., Brown, R., Butt, K., Morency, A., Demers, S., Grigoriu, A., & Nevo, O. (2021) · Journal of Obstetrics and Gynaecology Canada · doi:10.1016/j.jogc.2021.05.004 · Cited by 12 · see citing works
Timing of birth in multiple pregnancy
Dias, T., & Akolekar, R. (2013) · Best Practice & Research Clinical Obstetrics & Gynaecology · doi:10.1016/j.bpobgyn.2013.11.001 · Cited by 12 · see citing works
Self-citationDoes antenatal ultrasound labeling predict birth order in twin pregnancies?
D’Antonio, F., Dias, T., & Thilaganathan, B. (2012) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.12310 · Cited by 12 · see citing works
Self-citationDiagnosis of chorionicity: The role of ultrasound
D’Addario, V., & Rossi, C. (2013) · Diagnóstico Prenatal · doi:10.1016/j.diapre.2013.09.004 · Cited by 11 · see citing works
Gulati, N., Mackie, F. L., Cox, P. M., Marton, T., Heazell, A. E. P., Morris, R. K., & Kilby, M. D. (2020) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/1471-0528.16291 · Cited by 11 · see citing works
Altorjay, Á. T., Nyári, T., Gyurkovits, Z., Németh, G., & Surányi, A. (2018) · European Journal of Obstetrics & Gynecology and Reproductive Biology · doi:10.1016/j.ejogrb.2018.05.040 · Cited by 10 · see citing works
Hamer, J., Tamblyn, J. A., Castleman, J. S., & Morris, R. K. (2025) · Cambridge University Press eBooks · doi:10.1017/9781009526142 · Cited by 8 · see citing works
Yamashita, A., Ishii, K., Hidaka, N., Yonetani, N., Hayashi, S., Takeuchi, M., & Mitsuda, N. (2015) · Fetal Diagnosis and Therapy · doi:10.1159/000367969 · Cited by 9 · see citing works
Determining chorionicity and amnionicity in twin pregnancies: Pitfalls
Lu, J., Ting, Y. H., & Leung, T. Y. (2022) · Best Practice & Research Clinical Obstetrics & Gynaecology · doi:10.1016/j.bpobgyn.2022.03.005 · Cited by 8 · see citing works
Wojas, A., Martin, K. A., Malashevich, A. K., Hashimoto, K., Parmar, S., White, R., Demko, Z., Billings, P. R., Jelsema, R., & Rebarber, A. (2022) · Prenatal Diagnosis · doi:10.1002/pd.6218 · Cited by 8 · see citing works
Monochorionic Twin Pregnancy— Potential Risks and Perinatal Outcomes
Elito, J., Santana, E. F. M., & Cecchino, G. N. (2015) · InTech eBooks · doi:10.5772/58951 · Cited by 8 · see citing works
‘False’ lambda sign in monochorionic twin pregnancy
Walsh, C. A., Wilkinson, M. E., Downey, P., Mooney, E. E., & Carroll, S. (2015) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.14827 · Cited by 8 · see citing works
Pitfall in first-trimester diagnosis of chorionicity in twin pregnancy
Gueneuc, A., Spaggiari, E., Bonnière, M., Hajal, N., Ville, Y. G., & Salomon, L. J. (2016) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.15922 · Cited by 7 · see citing works
Li, X., Xuan, Y., Wang, J., Wang, L., Papageorghiou, A. T., & Wu, Q. (2021) · Journal of Ultrasound in Medicine · doi:10.1002/jum.15784 · Cited by 7 · see citing works
The High-Risk Profile of Selective Growth Restriction in Monochorionic Twin Pregnancies
Kozinszky, Z., & Surányi, A. (2023) · Medicina · doi:10.3390/medicina59040648 · Cited by 7 · see citing works
Kuleva, M., Fries, N., Castaing, O., Moeglin, D., & Salomon, L. J. (2013) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.12413 · Cited by 7 · see citing works
Mok, T., Afshar, Y., Platt, L. D., Guo, R., Rao, R., Pluym, I. D., Silverman, N. S., & Han, C. S. (2021) · American Journal of Perinatology · doi:10.1055/s-0041-1732456 · Cited by 6 · see citing works
Faber, S., Riße, S., Steinke, H., Thome, U. H., & Stepan, H. (2012) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.12333 · Cited by 6 · see citing works
Dias, T., & Thilaganathan, B. (2012) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/1471-0528.12000 · Cited by 6 · see citing works
Self-citationNeves, A. R., Nunes, F., Branco, M. P. D. R., Almeida, M. D. C., & Silva, I. S. (2017) · Journal of Perinatal Medicine · doi:10.1515/jpm-2016-0371 · Cited by 5 · see citing works
Clinical outcomes of fetal selective reduction in dichorionic triplet pregnancies
Yang, Y., Ye, X., & Sun, X. (2023) · Journal of the Chinese Medical Association · doi:10.1097/jcma.0000000000001017 · Cited by 4 · see citing works
Neyro, V., Élie, V., Médard, Y., & Jacqz-Aigrain, É. (2018) · Fundamental and Clinical Pharmacology · doi:10.1111/fcp.12357 · Cited by 4 · see citing works
Guidelines for scanning twins and triplets with US and MRI
Calvo‐Garcia, M. A. (2016) · Pediatric Radiology · doi:10.1007/s00247-015-3455-0 · Cited by 4 · see citing works
Twin Types: More Than Just Two
Segal, N. L. (2017) · Elsevier eBooks · doi:10.1016/b978-0-12-803994-6.00001-9 · Cited by 3 · see citing works
Screening for High-Risk Pregnancy
Wielgoś, M., & Kosinski, P. D. (2021) · Cambridge University Press eBooks · doi:10.1017/9781108863049.018 · Cited by 3 · see citing works
Rizzini, N., Fratelli, N., Negri, B., Odicino, F. E., Sartori, E., Risso, F. M., Prefumo, F., & Fichera, A. (2022) · European Journal of Obstetrics & Gynecology and Reproductive Biology · doi:10.1016/j.ejogrb.2022.02.021 · Cited by 2 · see citing works
Liu, S., Xu, Q.-H., Liu, D., Li, Q., Qian, J., Zhang, B., & Chen, X.-X. (2024) · Reproductive Biology and Endocrinology · doi:10.1186/s12958-024-01199-6 · Cited by 2 · see citing works
Counselling in Fetal Medicine: Uncomplicated Twin Pregnancies
Sileo, F. G., Sorrenti, S., Giancotti, A., Mascio, D. D., D’Ambrosio, V., Zullo, F., D’Alberti, E., Derme, M., Mappa, I., Bertucci, E., et al. (2024) · Journal of Clinical Medicine · doi:10.3390/jcm13237355 · Cited by 4 · see citing works
Twin pregnancy chorionicity determination in a tertiary care setting
Dias, T., Weerasinghe, A., Amarathunga, P., Silva, C. D., & Thilaganathan, B. (2013) · Ceylon Medical Journal · doi:10.4038/cmj.v58i4.6309 · Cited by 2 · see citing works
Self-citationPares, D. B. S., Lima, A. I. F., Júnior, E. A., Nardozza, L. M. M., Martins, W. P., & Moron, A. F. (2013) · Brazilian Journal of Cardiovascular Surgery · doi:10.5935/1678-9741.20130078 · Cited by 2 · see citing works
Ethical considerations in the care of complicated twin pregnancies
Laventhal, N. T., & Treadwell, M. C. (2017) · Seminars in Fetal and Neonatal Medicine · doi:10.1016/j.siny.2017.10.007 · Cited by 2 · see citing works
First-Trimester Detection of Fetal Anomalies
Napolitano, R., & Papageorghiou, A. T. (2015) · Elsevier eBooks · doi:10.1016/b978-0-7020-4591-2.00001-2 · Cited by 2 · see citing works
Self-citationEarly Pregnancy Ultrasound Assessment of Multiple Pregnancy
Antsaklis, P. G., Papamichail, M., Theodora, M. K., Syndos, M., & Daskalakis, G. J. (2019) · IntechOpen eBooks · doi:10.5772/intechopen.81498 · Cited by 2 · see citing works
Two separate placental masses on ultrasound do not always indicate a dichorionic pregnancy
Abgral, M., Martinovic, J., Bonnin, A., Houllier, M., Sénat, M. V., & Bouchghoul, H. (2020) · Journal of Gynecology Obstetrics and Human Reproduction · doi:10.1016/j.jogoh.2020.101694 · Cited by 2 · see citing works
Chae, H., Kim, E. N., Park, N.-Y., Lee, I., Lee, Y.-A., Jun, J.-K., Cheon, G. J., Park, Y. J., Kho, Y., Cho, S. W., et al. (2026) · Environmental Science and Technology · doi:10.1021/acs.est.5c16517 · Cited by 1 · see citing works
First-trimester Ultrasound and Aneuploidy Screening in Multifetal Pregnancies
Hirshberg, A., & Dugoff, L. (2015) · Clinical Obstetrics & Gynecology · doi:10.1097/grf.0000000000000129 · Cited by 1 · see citing works
Techniques de prélèvements fœtaux
Colmant, C., & Sénat, M. (2012) · EMC - Obstétrique · doi:10.1016/s0246-0335(12)59377-4 · Cited by 1 · see citing works
Multiple pregnancy: diagnosis and screening
Bricker, L. (2016) · Cambridge University Press eBooks · doi:10.1017/cbo9781107585843.025 · Cited by 1 · see citing works
La importancia de la ecografía a las 11+0 a 13+6 semanas de embarazo. Actualización
Nazario, C., Ventura-Laveriano, J., Flores-Molina, É., & Ventura, W. (2013) · Anales de la Facultad de Medicina · doi:10.15381/anales.v72i3.1070 · Cited by 1 · see citing works
Wu, S., Zhou, Q., Xiao, X., Xiong, Y., Liang, H., Shen, J., Barrett, J., Wang, H., & Li, X. (2020) · Reproductive and Developmental Medicine · doi:10.4103/2096-2924.281857 · Cited by 1 · see citing works
Noninvasive prenatal screening in twin pregnancies
Leonard, S. P., & Martin, K. A. (2020) · Elsevier eBooks · doi:10.1016/b978-0-12-820047-6.00015-1 · Cited by 1 · see citing works
Pilli, M. L., Balusamy, S. L., Ramesh, J., Suresh, I., Seshadri, S., & Sairam, S. (2014) · Journal of Fetal Medicine · doi:10.1007/s40556-014-0003-1
Complicaciones del embarazo gemelar monocorial: claves para el diagnóstico y tratamiento
Ortiz, J. U., Martínez, J. M., Eixarch, E., Crispi, F., Puerto, B., & Gratacós, E. (2012) · Diagnóstico Prenatal · doi:10.1016/j.diapre.2012.06.008
Controversies in management of multiple pregnancy
Dias, T. (2013) · Sri Lanka Journal of Obstetrics and Gynaecology · doi:10.4038/sljog.v35i2.6166
Self-citationPares, D. B. S., Lima, A. I. F., Lima, F. G., Marcondes, L., Nardozza, M., & Moron, A. F. (2013)
Best Practice & Research Clinical Obstetrics and Gynaecology
Bhidé, A. (2014)
Prenatal diagnosis of thalassemia in twin pregnancies in mainland China
Li, D., Pan, M., Han, J., Yang, X., Zhen, L., Li, J. J., & Ou, Y. (2016) · Journal of Obstetrics and Gynaecology · doi:10.3109/01443615.2016.1148678
Normal First Trimester of Pregnancy
Hack, K., & Glanc, P. (2015) · Springer eBooks · doi:10.1007/978-3-319-20203-7_7
Kumar, B., & Alfirević, Ž. (2016) · Cambridge University Press eBooks · doi:10.1017/cbo9781107585843.024
Lewi, L., Devlieger, R., Catte, L. D., & Deprest, J. A. (2015) · Elsevier eBooks · doi:10.1016/b978-0-7020-4591-2.00009-7
Suresh, I., Andrew, C., & Seshadri, S. (2016) · Journal of South Asian Federation of Obstetrics and Gynaecology · doi:10.5005/jp-journals-10006-1439
Skrypchenko, N. Y., Shamayeva, O. V., Hrebinichenko, A. O., Podolskyi, V. V., Mazur, T. M., & Pavlova, O. M. (2016) · PERINATOLOGIYA I PEDIATRIYA · doi:10.15574/pp.2016.67.66
Bakare, A. A., Moyosore, A. A., Ejike, E. D., Adewale, A. O., Fernandez, E. M., Quadri, K. K., & Hussein, I. K. (2018) · Open Journal of Obstetrics and Gynecology · doi:10.4236/ojog.2018.814160
Influence of chorionicity on healthy twin pregnancy outcome
Aksam, S., Plešinac, S., Dotlić, J., Kocijancic-Belovic, D., & Marjanovic-Cvjeticanin, M. (2020) · Vojnosanitetski pregled · doi:10.2298/vsp180505025a
Rueda, S. J. B., & Becerra, C. H. (2020) · Journal of Science Humanities and Arts - JOSHA · doi:10.17160/josha.7.1.632
Miller, E. I., Blat, C., Gosnell, K. A., Gonzalez, J. M., & Ghaffari, N. (2020) · American Journal of Perinatology · doi:10.1055/s-0040-1718371
MAIN FINDINGS OF BREAST ULTRASONOGRAPHY EXAMINATIONS AND BI-RADS CLASSIFICATION
David, C., Parente, A. M. V., & Evangelista, P. G. (2020) · RBUS. Revista Brasileira de Ultra-Sonografia · doi:10.17648/rbus-v28n29-2
Domingues, M. P., Telles, J. A. B., & do Amaral, W. N. (2020) · RBUS. Revista Brasileira de Ultra-Sonografia · doi:10.17648/rbus-v28n29-3
TECHNIQUE OF PUDENDAL NERVE BLOCK IN THE CANAL OF ALCOCK GUIDED BY ULTRASOUND
Souza, G., & Gomes, M. (2020) · RBUS. Revista Brasileira de Ultra-Sonografia · doi:10.17648/rbus-v28n29-4
SPONTANEOUS OVARIAN HYPERESTIMULATION WITH TOPICAL PREGNANCY: CASE REPORT
Ferreira, R. G., Ferreira, L. M. A., Falone, V. E., Leite, P., Martins, L., Vieira, L. T. Q., & do Amaral, W. N. (2020) · RBUS. Revista Brasileira de Ultra-Sonografia · doi:10.17648/rbus-v28n29-8
UTERINE ARTERIOVENOUS MALFORMATION (UAVM) - A CASE REPORT
Fortes, A., Oliveira, C., Fonseca, C., Nunes, C. S., & Ferreira, A. K. (2020) · RBUS. Revista Brasileira de Ultra-Sonografia · doi:10.17648/rbus-v28n29-6
FETAL NEUROSONOGRAPHY: A PARALLEL WITH ECOCARDIOGRAPHY
Telles, J. A. B. (2020) · RBUS. Revista Brasileira de Ultra-Sonografia · doi:10.17648/rbus-v28n29-1
França, L., do Amaral, W. N., Falone, V. E., Martins, L., Leite, P. M., & Filho, W. A. (2020) · RBUS. Revista Brasileira de Ultra-Sonografia · doi:10.17648/rbus-v28n29-9
- Authors
- Dias, T., Arcangeli, T., Bhide, A., Napolitano, R., Mahsud‐Dornan, S., & Thilaganathan, B.
- Affiliations
- St George's, University of London (GB)
- Corresponding author
- Thilaganathan, B.
- Venue
- Ultrasound in Obstetrics & Gynecology
- Publisher
- Wiley
- Published
- 2011-05-03
- Volume
- 38
- Issue
- 5
- Pages
- 530-532
- ISSN
- 0960-7692 (ISSN-L)
- 1469-0705
- OpenAlex
- W2020721181
- Cited by
- 127
- References
- 16
- Citations by year
- 2026: 4 · 2025: 1 · 2024: 4 · 2023: 8 · 2022: 8 · 2021: 14 · 2020: 19 · 2019: 2 · 2018: 7 · 2017: 8 · 2016: 9 · 2015: 9 · 2014: 5 · 2013: 17 · 2012: 9
- FWCI
- 9.74
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Ultrasound in Obstetrics and Gynecology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Assisted Reproductive Technology and Twin Pregnancy
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Prenatal Screening and Diagnostics
- Health Sciences › Medicine › Surgery › Congenital Anomalies and Fetal Surgery
- Keywords
- twin pregnancy, chorionicity, monochorionic twins, dichorionic twins, first-trimester ultrasound, placental mass, T-sign, lambda sign, diagnostic accuracy, histopathological confirmation
- MeSH terms
- Chorion, Female, Humans, Placenta, Pregnancy, Pregnancy Trimester, First, Retrospective Studies, Sensitivity and Specificity, Ultrasonography, Prenatal, Pregnancy, Twin
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review