Sonar Measurement of Fetal Crown-Rump Length as Means of Assessing Maturity in First Trimester of Pregnancy

The American Journal of Obstetrics and Gynecology 1920–1945

Kosmak, G. W. (1945) · American Journal of Obstetrics and Gynecology · doi:10.1016/0002-9378(45)90038-x · Cited by 2,071

GROWTH OF THE FETAL BIPARIETAL DIAMETER DURING NORMAL PREGNANCY

Campbell, S., & Newman, G. B. (1971) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/j.1471-0528.1971.tb00309.x · Cited by 277

THE PREDICTION OF FETAL MATURITY BY ULTRASONIC MEASUREMENT OF THE BIPARIETAL DIAMETER

Campbell, S. C. (1969) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/j.1471-0528.1969.tb06146.x · Cited by 219

FOETAL CEPHALOMETRY BY ULTRASOUND

Willocks, J., Donald, I., DUGGAN, T. C., & Day, N. (1964) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/j.1471-0528.1964.tb04236.x · Cited by 185

Growth and development of the human fetus prior to the twentieth week of gestation

Hellman, L. M., Kobayashi, M., Fillisti, L. P., & Lavenhar, M. A. (1969) · American Journal of Obstetrics and Gynecology · doi:10.1016/0002-9378(69)90575-4 · Cited by 133

Fallacy of the Fundal Height

BEAZLEY, J. M., & Underhill, R. A. (1970) · BMJ · doi:10.1136/bmj.4.5732.404 · Cited by 114

Ultrasonics in Obstetrics and Gynaecology

Donald, I., & Abdulla, U. (1967) · British Journal of Radiology · doi:10.1259/0007-1285-40-476-604 · Cited by 68

Sonar as a method of studying prenatal development

Behrman, R. E., & Donald, I. (1969) · The Journal of Pediatrics · doi:10.1016/s0022-3476(69)80408-7 · Cited by 35

Comparison of Ultrasound Cephalometry, Radiology, and Liquor Studies in Patients with Unknown Confinement Dates

Underhill, R. A., BEAZLEY, J. M., & Campbell, S. C. (1971) · BMJ · doi:10.1136/bmj.3.5777.736 · Cited by 23

TIME OF OVULATION IN RELATION TO CYCLE LENGTH

Bell, E. T., & LORAINE, J. A. (1965) · The Lancet · doi:10.1016/s0140-6736(65)91309-7 · Cited by 13

Maternal and fetal haemopexin and α1-microglobulin concentrations in pre-eclamptic IVF pregnancies according to presence of corpus luteum at embryo transfer

Boutet, M. L., Youssef, L., Erlandsson, L., Hansson, E., Manau, D., Crispi, F., Casals, G., & Hansson, S. R. (2022) · Reproductive BioMedicine Online · doi:10.1016/j.rbmo.2022.01.005 · Cited by 2

Gestational Dating by Urine Metabolic Profile at High Resolution Weekly Sampling Timepoints: Discovery and Validation

Sylvester, K. G., Hao, S., Li, Z., Han, Z., Tian, L., Ladella, S., Wong, R. J., Shaw, G. M., Stevenson, D. K., Cohen, H. J., et al. (2022) · Frontiers in Molecular Medicine · doi:10.3389/fmmed.2022.844280 · Cited by 2

RES Function in Experimental and Human Liver Disease

Liehr, H. (1985) · Springer eBooks · doi:10.1007/978-1-4613-2353-2_9 · Cited by 2

An obstetric test for resolution by ultrasonic echoscopes

Garrett, W. J., & KOSSOFF, G. (1975) · Ultrasonics · doi:10.1016/0041-624x(75)90035-9 · Cited by 2

A Comparison of Early Fetal Growth Curves

Duff, G. B. (1979) · Australian and New Zealand Journal of Obstetrics and Gynaecology · doi:10.1111/j.1479-828x.1979.tb01360.x · Cited by 2

Amniotic fluid alkaline ribonuclease activity: an indicator of foetal growth retardation and anencephaly

Buamah, P. K., Scott, P. H., SKILLEN, A. W., Taylor, P., & Milford-Ward, A. (1984) · Clinica Chimica Acta · doi:10.1016/0009-8981(84)90223-7 · Cited by 2

Pre-requisites of pre-induction and induction of labour

Calder, A. A. (1983) · European Journal of Obstetrics & Gynecology and Reproductive Biology · doi:10.1016/0028-2243(83)90048-5 · Cited by 2

Fetal Assessment in Diabetic Pregnancy Using Non-steroid Assessments

Tchobroutsky, C. (1979) · Springer eBooks · doi:10.1007/978-3-642-66972-9_19 · Cited by 2

Patterns of Early Neurological Development

Brandt, I. (1979) · Springer eBooks · doi:10.1007/978-1-4684-0817-1_8 · Cited by 2

Embryologie und Frühschwangerschaft

Blaas, H.-G. K., Hasenöhrl, G., & Staudach, A. (2013) · Springer eBooks · doi:10.1007/978-3-642-29633-8_3 · Cited by 1

Échographie du premier trimestre de la grossesse

Bourgeot, P., & Robert, Y. (2011) · EMC - Radiologie et imagerie médicale - Génito-urinaire - Gynéco-obstétricale - Mammaire · doi:10.1016/s1879-8543(11)70686-3 · Cited by 1

Assessment of fetal growth and serum hCG titers after in vitro fertilization and embryo transfer

Nisikori, K., Nagoshi, K., Shimizu, K., & Yoshida, N. (1993) · International Journal of Gynecology & Obstetrics · doi:10.1016/0020-7292(93)90697-u · Cited by 1

Goal-directed junior ultrasound training in quantitative measurement of crown-rump length and fetal nuchal translucency: evaluation of a specific training program in a specialized center for prenatal diagnosis

Padula, F., Capriglione, S., Magliarditi, M., Sole, R. D., Nuara, R., Santonocito, V. C., Teodoro, M. C., & Giorlandino, C. (2015) · European Journal of Obstetrics & Gynecology and Reproductive Biology · doi:10.1016/j.ejogrb.2015.01.017 · Cited by 1

The K-P Algorithm: A New First-Trimester Growth Model – Comparison with Other Formulae and Correlations with Recorded Embryonic Lengths

Mongelli, M., Riemke, J., Casikar, I., Alhamdan, D., Benzie, R. J., & Condous, G. S. (2012) · Gynecologic and Obstetric Investigation · doi:10.1159/000343231 · Cited by 1

Anomalies in Fetal Dating

Dudley, N., Kirwin, S., Dack, F., Bown, C., & Rose, D. J. A. (2004) · Ultrasound · doi:10.1179/174227104225011731 · Cited by 1

Fetal growth assessment at 11-14 wks of gestation based on a population anomaly screening program in central-eastern Poland

Wnuczek-Mazurek, I., Kraczkowski, J. J., & Czekierdowski, A. (2013) · Cited by 1

Lower accuracy in prediction of delivery date in Stockholm County following introduction of new guidelines

Wessel, H., & Nyberg, T. (2016) · Acta Obstetricia Et Gynecologica Scandinavica · doi:10.1111/aogs.13061 · Cited by 1

The first trimester, gynaecological aspects

Coady, A. (2011) · Elsevier eBooks · doi:10.1016/b978-0-7020-3131-1.00039-0 · Cited by 1

Embryologie und Frühschwangerschaft

Blaas, H. ‐. K., Hasenöhrl, G., & Staudach, A. (2017) · Springer eBooks · doi:10.1007/978-3-662-53662-9_3 · Cited by 1

Fetal Biometry in Early Pregnancy

Porche, L. M., Warsof, S. L., & Abuhamad, A. (2023) · Springer eBooks · doi:10.1007/978-3-031-24133-8_11 · Cited by 1

Biparietal diameter for first‐trimester pregnancy dating: multicenter cohort study

Matallana, C. D. P., Rollé, V., Fidalgo, A. M., Sánchez‐Romero, J., Jani, J. C., Chaveeva, P., Delgado⋈, J. L., Santacruz, B., Nicolaides, K. H., & Gil, M. M. (2025) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.29216 · Cited by 1

A Brief History of Obstetric Complications

Savchev, S., Bello‐Muñoz, J. C., Renzo, G. C. D., & Cabero, L. (2016) · Springer eBooks · doi:10.1007/978-3-319-31377-1_1 · Cited by 1

First-trimester reference centiles of fetal biometry in Indian population

Kumar, M., Ravi, V., Sharma, K., Singh, S., Singh, R., Gupta, U., & Bhattacharjee, J. (2016) · The Journal of Maternal-Fetal & Neonatal Medicine · doi:10.1080/14767058.2016.1263890 · Cited by 1

Entwicklung der fetalen Echokardiographie als Basis der fetalen Kardiologie

Gembruch, U. (2018) · Der Gynäkologe · doi:10.1007/s00129-018-4308-3 · Cited by 1

The choice of reference chart affects the strength of the association between malaria in pregnancy and small for gestational age: an individual participant data meta-analysis comparing the Intergrowth-21 with a Tanzanian birthweight chart

Mtove, G. A., Minja, D. T. R., Msemo, O. A., Gesase, S., Maleta, K. M., Divala, T. H., Patson, N., Ashorn, U., Laufer, M. K., Madanitsa, M., et al. (2022) · Malaria Journal · doi:10.1186/s12936-022-04307-2 · Cited by 1

Ultraschalldiagnostik der gestörten Frühgravidität

TERINDE, R., & Grab, D. (1991) · Springer eBooks · doi:10.1007/978-3-642-52128-7_2 · Cited by 1

Ultrasound Features of the Early Gestational Sac

Schaaps, J. P. (1992) · Springer eBooks · doi:10.1007/978-3-642-84385-3_4 · Cited by 1

Prevention of the toxicity of erythromycin estolate in the perfused rat liver by endotoxin

Gaeta, G. B., Adinolfi, L. E., Utili, R., Tripodi, M. F., & Abernathy, C. O. (1986) · Life Sciences · doi:10.1016/0024-3205(86)90525-4 · Cited by 1

Ultraschalluntersuchung in der Geburtshilfe

Kratochwil, A. (1980) · Handbuch der medizinischen Radiologie · doi:10.1007/978-3-642-95351-4_11 · Cited by 1

Ultra-sound diagnosis of foetal disorder

Knox, S. (1980) · Public Health · doi:10.1016/s0033-3506(80)80139-9 · Cited by 1

The crown‐rump length in early human pregnancy: a reappraisal

Mills, M. S. (1991) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/j.1471-0528.1991.tb13525.x · Cited by 1

Gray scale ultrasound for the investigation of early pregnancy

Defoort, P., van Eyck, J., Schryver, D. D., Thiéry, M., & Martens, G. (1978) · European Journal of Obstetrics & Gynecology and Reproductive Biology · doi:10.1016/0028-2243(78)90004-7 · Cited by 1

Unconjugated estriol in maternal plasma relationship with early fetal development measured by ultrasonic morphometry

Hertogh, R. D., & Luyx, A. (1977) · Journal of Steroid Biochemistry · doi:10.1016/0022-4731(77)90236-9 · Cited by 1

Ultrasonographic measurement of thoracic diameters of the early gestating fetus

Hata, T., Hata, K., Yamane, Y., Osamu, T., & Kitao, M. (1989) · International Journal of Gynecology & Obstetrics · doi:10.1016/0020-7292(89)90353-6 · Cited by 1

The early development of neurosonology: II. Fetal and neonatal echoencephalography

White, D. N. (1992) · Ultrasound in Medicine & Biology · doi:10.1016/0301-5629(92)90093-p · Cited by 1

Signs of fetal death in early pregnancy

Young, G. B., & McDicken, W. N. (1978) · Journal of Clinical Ultrasound · doi:10.1002/jcu.1870060411 · Cited by 1

Practicability of Ultrasonography for Assessing Fetal Age and Weight in Early Pregnancy

Mercer, J. P., Brenner, W. E., Bolan, J. C., Dingfelder, J. R., Edelman, D. A., & Staurovsky, L. G. (1976) · International Journal of Gynecology & Obstetrics · doi:10.1002/j.1879-3479.1976.tb00074.x · Cited by 1

Post-term Pregnancy

Hobart, J. M. (1989) · Clinics in Perinatology · doi:10.1016/s0095-5108(18)30611-0 · Cited by 1

Proceedings of The British Medical Ultrasonics Group

(1975) · British Journal of Radiology · doi:10.1259/0007-1285-48-570-510 · Cited by 1

Pelvic Ultrasonography

Koontz, W. L., & Fellows, R. A. (1985) · CPOBGYN. Clinical perspectives in obstetrics and gynecology · doi:10.1007/978-1-4612-5064-7_23 · Cited by 1

First-Trimester Ultrasound: A Comparative Review of Guidelines

Boureka, E., Tsakiridis, I., Michos, G., Liberis, A., Giouleka, S., Mamopoulos, A., Kalogiannidis, I., & Dagklis, T. (2026) · Diagnostics · doi:10.3390/diagnostics16111695

Valores de referência para área de secção transversa do cordão e vasos umbilicais aferidos pela ultrassonografia em gestações gemelares dicoriônicas

Fernandes, D. B. (2014) · doi:10.11606/d.5.2014.tde-13082014-144551

Genetic and Environmental Influences on Early Growth: The Generation R Study

Mook-Kanamori, D. O. (2010) · EUR Research Repository (Erasmus University Rotterdam)

Assessment of Hemodynamic Parameters in the Fetal and Utero-placental Circulation using Doppler Ultrasound

Struijk, P. C. (2006) · EUR Research Repository (Erasmus University Rotterdam)

Normal Fetal Anatomy in the Second and Third Trimester

Hansmann, M., Hackelöer, B.-J., & Staudach, A. (1986) · Springer eBooks · doi:10.1007/978-3-642-70423-9_7

Current trends in obstetric services

McCarthy, M., & McCarthy, T. (1975) · Public Health · doi:10.1016/s0033-3506(75)80004-7

The role of ultrasound in the clinical practice of obstetrics

Cohen, A. W., Lindenbaum, C., Jackson, G. M., Forouzan, I., & Eife, S. B. (1990) · Seminars in Roentgenology · doi:10.1016/0037-198x(90)90059-d

PREDICTION OF THE TIME OF DELIVERY BY MEANS OF ULTRASONIC SCANNING BETWEEN THE 20TH AND 30TH WEEKS OF PREGNANCY

Hasch, E., Lange, A. P., & Sørensen, T. (1979) · Acta Obstetricia Et Gynecologica Scandinavica · doi:10.3109/00016347909154067

Estimating gestational age.

Atkins, J. (1979) · BMJ · doi:10.1136/bmj.1.6172.1215-e

New First-Trimester Crown-Rump Length Equations from a French General Population

Constant, M., Tran, V. C., Benoît, B., & Vasseur, F. (2012) · Fetal Diagnosis and Therapy · doi:10.1159/000339272

Primary obstetric ultrasound : comparing a detail ultrasound only protocol with a booking ultrasound protocol

Poggenpoel, E. J. (2010) · SUNScholar (Stellenbosch University)

Detection of congenital anomalies before or after birth; does it make a difference?

Cohen‐Overbeek, T. E. (2008) · RePub (Erasmus University Rotterdam)

First-Trimester Fetal Growth Restriction Risk Factors and Outcomes Associated With

Smith, G. C. S. (2010)

A clinical and ultrasound study of Asian maternity patients in Bradford

Eyton‐Jones, J., & Goldthorpe, J. (1985) · Journal of Obstetrics and Gynaecology · doi:10.3109/01443618509067763

Controversies in Caring for the Extremely Premature Infant

Leuthner, S. R. (2014)

Effects of Endotoxin on Mixed Function Oxidase Activity

Williams, J. F., & Szentivanyi, A. (1986) · Springer eBooks · doi:10.1007/978-1-4613-2253-5_13

Clinical Relevance of Endotoxemia

Nolan, J. P. (1986) · Springer eBooks · doi:10.1007/978-1-4613-2253-5_44

Fetal Biometry in Early Pregnancy

Porche, L. M., Warsof, S. L., & Abuhamad, A. (2015) · Springer eBooks · doi:10.1007/978-3-319-20203-7_9

Early Diagnosis and Follow Up of Twin-Pregnancy Using a Two-Dimensional Ultrasonic Scanner

Abdulla, U. (1976) · Acta geneticae medicae et gemellologiae · doi:10.1017/s0001566000014343

Using ultrasound to assess the fetus at risk

Dewhurst, C. J. (1976) · Postgraduate Medicine · doi:10.1080/00325481.1976.11714395

Zwischen positiver Herzaktion und Ersttrimesterscreening

Strauss, A. S. (2015) · Der Gynäkologe · doi:10.1007/s00129-015-3772-2

12 Prenatale zorg

Heineman, M. J., Evers, J. L. H., Massuger, L. F. A. G., & Steegers, E. A. P. (2016) · Bohn Stafleu van Loghum eBooks · doi:10.1007/978-90-368-1191-0_12

Imaging in Obstetrics and Infertility

Fender, L. J., & Twining, P. (2008) · Elsevier eBooks · doi:10.1016/b978-0-443-10163-2.50056-7

Original Research Article Growth Patterns of the Heart and Kidney Suggest Inter-organ Collaboration in Facultative Fetal Growth

Lampl, M., Kuzawa, C. W., & Jeanty, P. (2005)

Estimation of Day-Specific Probabilities of Conception during Natural Cycle in Women from Babylon.

Al-Taee, H. A. J., & Edan, B. J. (2018) · PubMed Central · doi:10.22074/ijfs.2018.5100

Fetal Biometry is a Prerequisite Part of Modern Antenatal Care

Salim, A. (2018) · Indonesian Journal of Obstetrics and Gynecology · doi:10.32771/inajog.v6i3.776

Guidelines and Recommendations on the use of Ultrasound in Obstetrics and Gynecology

Matias, A., & Montenegro, N. A. M. D. M. (2015) · Donald School Journal of Ultrasound in Obstetrics & Gynecology · doi:10.5005/dsjuog-9-2-203

Biases in second-trimester ultrasound dating related to prediction models and fetal measurements

Økland, I. (2012) · NORA - Norwegian Open Research Archives

ROLE OF ULTRASONOGRAPHY IN THE DIAGNOSIS OF PREGNANCY

Kumari, S., Kumar, B., Singh, V., Pandey, R. K., N, J. H., & Shahnawaz, K. (2015) · Journal of Evolution of Medical and Dental Sciences · doi:10.14260/jemds/2015/544

Femur length in normal fetuses and the correlation between crown-rump length and gestational age at 11-14 weeks in a Chinese Han population: a preliminary study

Wang, J., Jiang, T., Zhu, X., & Tian, G.-H. (2019) · Clinical and Experimental Obstetrics & Gynecology · doi:10.12891/ceog4557.2019

A STUDY OF FETAL TRANSCEREBELLAR DIAMETER IN GESTATIONAL AGE ESTIMATION BY ULTRASONOGRAPHY

Basavaraj, B. (2016)

Effektive Ergebnisse pränataler Diagnostik in Deutschland

Hackelöer, B.-J. (2021) · Der Gynäkologe · doi:10.1007/s00129-021-04827-z

Gestational Assessment

(1986) · The Lancet · doi:10.1016/s0140-6736(86)91506-0

New Sri Lankan Crown Rump Length Chart

Jayasinghe, K. S., Kulatunga, S., & Ratnasiri, U. D. P. (2022) · Open Journal of Obstetrics and Gynecology · doi:10.4236/ojog.2022.121002

Imaging Techniques in Obstetrics

(1981) · The Lancet · doi:10.1016/s0140-6736(81)91620-2

Épaisseur de la clarté nucale A 11–14 SA : courbes et équations françaises

Salomon, L. J., Chalouhi, G. E., Bernard, J. P., & Ville, Y. G. (2010) · Sages-Femmes · doi:10.1016/j.sagf.2010.02.007

Frühschwangerschaft

Duda, V., & Goswamy, R. K. (1993) · Springer eBooks · doi:10.1007/978-3-642-93477-3_13

Respiratory Mucus

(1986) · The Lancet · doi:10.1016/s0140-6736(86)91505-9

Maternal physical activity affects yolk sac size and growth in early pregnancy, but girls and boys use different strategies

Vietheer, A., Kiserud, T., Ebbing, C., Rajkumar, H., Haaland, Ø. A., Lie, R. T., Romero, R. J., & Kessler, J. (2023) · Scientific Reports · doi:10.1038/s41598-023-47536-4

Computer-Aided Detection of Biparietal Diameter and Femur Length Measurements from Prenatal Ultrasound ImagesPreprint

Abdi, R. M. A., Al-Goraee, A. M., Hijazi, H. H. A., Ghazal, M. A., Al‐Bashir, A. K., Alquran, H., Sindiani, A., Abdulhay, E., & Issa, W. B. (2024) · Research Square · doi:10.21203/rs.3.rs-4694265/v1

Cellular responses to developmental exposure to pyriproxyfen in chicken model: Contrasting embryos with and without exencephaly

Luckmann, M. R., & Nazari, E. M. (2024) · Neurotoxicology and Teratology · doi:10.1016/j.ntt.2024.107395

Early Diagnosis and Follow Up of Twin-Pregnancy Using a Two-Dimensional Ultrasonic Scanner

Abdulla, U. (1976) · Acta geneticae medicae et gemellologiae · doi:10.1017/s1120962300791268

Sonographie der Frühschwangerschaft und Sonoembryologie

Chaoui, R., & Blaas, H.-G. K. (2025) · Springer eBooks · doi:10.1007/978-3-662-67373-7_2

Correlation of Thickness of the Placenta in the Second and Third Trimesters with Crown-rump Length in the First Trimester for the Estimation of Fetal Age

Shanmugham, D., Vanjinayaki, K. J., & Kala, S. (2025) · Journal of South Asian Federation of Obstetrics and Gynaecology · doi:10.5005/jp-journals-10006-2515

Development of the facial nerve and its specific features

Babuci, A., Zorina, Z., Catereniuc, I., Trushel, N. A., Bendelic, A., Ostahi, N., & Lehtman, S. (2025) · Moldovan Journal of Health Sciences · doi:10.52645/mjhs.2025.3.02

Normal Early Pregnancy

BERNASCHEK, G., Deutinger, J., & Kratochwil, A. (1990) · Springer eBooks · doi:10.1007/978-3-642-74111-1_8

Additional file 1 of The choice of reference chart affects the strength of the association between malaria in pregnancy and small for gestational age: an individual participant data meta-analysis comparing the Intergrowth-21 with a Tanzanian birthweight chart

Mtove, G. A., Minja, D. T. R., Abdul, O., Gesase, S., Maleta, K., Divala, T. H., Patson, N., Ashorn, U., Laufer, M. K., Madanitsa, M., et al. (2022) · Figshare · doi:10.6084/m9.figshare.21321668

Placental lesions and neonatal outcomes in pregnancies complicated by chronic fetal hypoxia: a retrospective cohort studyPreprint

VANDUICK, M., Jacquin, C., Gabriel, R., Loron, G., Graesslin, O., SCHMIT, M., & Birene, B. (2026) · Research Square · doi:10.21203/rs.3.rs-9096778/v1

Fetal Growth in Pregnancies Conceived by Single Embryo Transfer: A Prospective Observational Cohort Study During Three Trimesters

Seljeflot, E. B., Mørch, H., Eggebø, T. M., Opdahl, S., Saravelos, S. H., Westvik‐Johari, K., & Kahrs, B. H. (2026) · Reproductive Female and Child Health · doi:10.1002/rfc2.70084

Towards a point of care approach for intra-amniotic infection or early delivery using minimally invasive prediction models in women with preterm labor.

Cobo, T., Boada, D., Burgos-Artizzu, X. P., Goya, M., Gómez, A. V., Kacerovský, M., Martínez, S. F., Filella, X., SELLARÉS, A., González, B., et al. (2026) · Dipòsit Digital de la Universitat de Barcelona (Universitat de Barcelona)

Maternal lifestyle risk factors and human embryonic morphologic development using 3D ultrasound: a population-based prospective cohort study

Graafland, N., Posthumus, A. G., Mulders, A. G. M. G. J., Gaillard, R., Koning, A. H. J., Jaddoe, V. W. V., Steegers, E. A. P., & Rousian, M. (2026) · Human Reproduction · doi:10.1093/humrep/deag125

Growth trajectory and miscarriage diagnosis threshold in early IVF pregnancy: multicenter study

Murugesu, S., Richardson, A., Shearer, A. M., Sheth, S., Nikolaou, D., Balfoussia, D., Mittal, M., Linton‐Reid, K., Aboagye, E. O., Saso, S., et al. (2026) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.70349

Prediction of maturity in first trimester of pregnancy by ultrasonic measurement of fetal crown‐rump length

Kurjak, A., Cecuk, S., & Breyer, B. (1976) · Journal of Clinical Ultrasound · doi:10.1002/jcu.1870040204 · Cited by 22

A CRITICAL EVALUATION OF SONAR “CROWN‐RUMP LENGTH” MEASUREMENTS

Robinson, H. P., & Fleming, J. E. E. (1975) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/j.1471-0528.1975.tb00710.x · Cited by 1,413

Estimation of pregnancy duration by means of ultrasonic measurements of the fetal crown—rump length

van de Velde, E. H. E., Broeders, G. H. B., Horbach, J. G. M., & Esser-Rath, M. V. W. C. J. (1980) · European Journal of Obstetrics & Gynecology and Reproductive Biology · doi:10.1016/0028-2243(80)90002-7 · Cited by 8

Accuracy of Gestational Age Estimation by Means of Fetal Crown-Rump Length Measurement

(1993) · Journal of diagnostic medical sonography · doi:10.1177/875647939300900333 · Cited by 3

THE PREDICTION OF FETAL MATURITY BY ULTRASONIC MEASUREMENT OF CROWN‐RUMP LENGTH

Drumm, J. (1977) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/j.1471-0528.1977.tb12475.x