The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.
Sonar Measurement of Fetal Crown-Rump Length as Means of Assessing Maturity in First Trimester of Pregnancy
Open accessAbstract
A method is reported by which the "in utero" crown-rump length of the fetus may be determined by sonar in the first trimester of pregnancy. The accuracy of the technique was assessed by comparing the sonar and the direct postabortum measurements of fetuses in cases of missed abortion. A normal curve of fetal crown-rump length was derived from 214 examinations on 80 patients and by using these values in a further "blind" series it was found possible to predict the maturity of pregnancy to within three days, between the sixth and the 14th weeks of pregnancy.
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“More specifically, the AIUM and ASUM base their antenatal care on the date of the last menstrual period (LMP), while the AWMF, ISUOG and SOGC consider the crown–rump length (CRL) to be the most accurate method for determining gestational age in spontaneously conceived pregnancies [20].”
From First-Trimester Ultrasound: A Comparative Review of Guidelines (2026) · cites this paper as [20]
In the citing paper
“More specifically, the AIUM and ASUM base their antenatal care on the date of the last menstrual period (LMP), while the AWMF, ISUOG and SOGC consider the crown–rump length (CRL) to be the most accurate method for determining gestational age in spontaneously conceived pregnancies [20].”
From First-Trimester Ultrasound: A Comparative Review of Guidelines (2026) · cites this paper as [20]
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Citations
Cites
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
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
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
Flagged first, then by citations
Research works printed but not linked: 5
- Campbell, S. (1969). Journal of Obstetrics and Gynaecology of the British Commonwealth, 76, 603.
- Campbell, S., and Newman, G. B. (1971). Journal of Obstetrics and Gynae- cology of the British Commonwealth, 78, 513.
- Robinson, H. P. (1972). British Medical,Journal, 4, 466.
- M.D. Thesis. Free University of Amsterdam.
- Willocks, J., Donald, I., Duggan, T. C., and Day, N. (1964). Journal of Obstetrics and Gynaecology of the British Commonwealth, 71, 1 1.
Cited by
Sorted by citations
Basic anatomical and physiological data for use in radiological protection: reference values
Valentin, J. (2002) · Annals of the ICRP · doi:10.1016/s0146-6453(03)00002-2 · Cited by 2,024
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
Self-citationBasic anatomical and physiological data for use in radiological protection : reference values
Valentin, J. (2002) · Medical Entomology and Zoology · Cited by 680
ISUOG Practice Guidelines: performance of first‐trimester fetal ultrasound scan
(2013) · Ultrasound in Obstetrics & Gynecology · doi:10.1002/uog.12342 · Cited by 621
ULTRASONIC MEASUREMENT OF FETAL ABDOMEN CIRCUMFERENCE IN THE ESTIMATION OF FETAL WEIGHT
Campbell, S. C., & Wilkin, D. (1975) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/j.1471-0528.1975.tb00708.x · Cited by 541
Metadata
- Authors
- Robinson, H. P.
- Affiliations
- University of Glasgow (GB)
- Corresponding author
- Robinson, H. P.
- Venue
- BMJ
- Publisher
- BMJ
- Published
- 1973-10-06
- Volume
- 4
- Issue
- 5883
- Pages
- 28-31
- ISSN
- 0007-1447 (ISSN-L)
- 0959-8138
- 1468-5833
- PMC
- PMC1587065
- OpenAlex
- W1995527832
- Cited by
- 392
- References
- 10
- Citations by year
- 2026: 6 · 2025: 6 · 2024: 7 · 2023: 5 · 2022: 12 · 2021: 13 · 2020: 9 · 2019: 8 · 2018: 12 · 2017: 12 · 2016: 14 · 2015: 11 · 2014: 11 · 2013: 10 · 2012: 10
- FWCI
- 19.78
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- BMJ (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed (publishedVersion)
- HighWire Press Open Archive (submittedVersion)
- Funders
- University of Glasgow
- Medical Research Council
- Topics
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Prenatal Screening and Diagnostics
- Health Sciences › Medicine › Obstetrics and Gynecology › Maternal and Perinatal Health Interventions
- Health Sciences › Medicine › Critical Care and Intensive Care Medicine › Ultrasound in Clinical Applications
- Keywords
- crown-rump length, fetal growth, first trimester, fetal maturity, sonar measurements, missed abortion, gestational age estimation
- MeSH terms
- Body Height, Female, Fetus, Gestational Age, Humans, Methods, Photography, Pregnancy, Ultrasonography
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