Oxford Fetal Medicine Unit selected publications

Fetal Growth

Salim I, Staines-Urias E, Mathewlynn S, Drukker L, Vatish M, Impey L.
The impact of a routine late third trimester growth scan on the incidence, diagnosis and management of breech presentation in Oxfordshire, UK: A cohort study.
PLoS Med 2021 Jan 15;18(1):e1003503.

Procas-Ramon B, Hierro-Espinosa C, Salim I, Impey L, Ioannou C.
The impact of individual sonographer variation on the detection of small for gestational age fetuses using a third trimester growth scan.
J Clin Ultrasound. 2021 Jun;49(5):442-450.

Volpe G, Ioannou C, Vannuccini S, Cavallaro A, Impey L.
The influence of fetal sex on the antenatal diagnosis of small for gestational age
J Matern Fetal Neonatal Med. 2018 Jan 2:1-6.

Veglia M, Cavallaro A, Papageorghiou A, Black R, Impey L.
Small-for-gestational-age babies after 37 weeks: impact study of risk-stratification protocol.
Ultrasound Obstet Gynecol. 2018 Jul;52(1):66-71.

Cavallaro A, Veglia M, Svirko E, Vannuccini S, Volpe G, Impey L.
Using fetal abdominal circumference growth velocity to improve the prediction of adverse outcomes in near term small-for-gestational-age fetuses.
Ultrasound Obstet Gynecol.2018 Oct;52(4):494-500.

Veglia M, Cavallaro A, Papageorghiou A, Black R, Impey L.
Small for Gestational Age Babies After 37 Weeks: An Impact Study of a Risk Stratification Protocol.
Ultrasound Obstet Gynecol 2018; 52: 66-71.

Easter SR, Eckert LO, Boghossian N, Spencer R, Oteng-Ntim E, Ioannou C et al. Brighton Collaboration Fetal Growth Restriction Working Group.
Fetal growth restriction: Case definition & guidelines for data collection, analysis, and presentation of immunization safety data.
Vaccine. 2017 Dec 4;35(48 Pt A):6546-6554.

Vannuccini S, Ioannou C, Cavallaro A, Volpe G, Impey L.
A reference range of fetal abdominal circumference growth velocity between 20 and 36 weeks gestation.
Prenat Diagn. 2017 Nov;37(11):1084-1092.

Ioannou C.
Maternal Vitamin D Deficiency and Fetal Growth.
Donald School Journal of Ultrasound in Obstetrics and Gynecology 2015;9:223-229.

Collins SL, Birks JS, Stevenson GN, Papageorghiou AT, Noble JA, Impey L.
Measurement of spiral artery jets: general principles and differences observed in small-for-gestational-age pregnancies.
Ultrasound Obstet Gynecol. 2012 Aug;40(2):171-8.

Ioannou C, Wayne C.
Diagnosis and management of vasa previa: a questionnaire survey.
Ultrasound Obstet Gynecol. 2010 Feb;35(2):205-9.

Fetal Medicine

Papageorghiou AT, Hulme R, Khalil A; IONA TWIN study Working Group, Archer R, Hutchinson V, Mousa HA, Johnstone ED, Cameron MJ, Cohen KE, Ioannou C, Kelly B, Reed K.
Cell-free DNA in twin pregnancy: time to change screening recommendations.
Am J Obstet Gynecol. 2021 Jun;224(6):639-640.

Khalil A, Archer R, Hutchinson V, Mousa HA, Johnstone ED, Cameron MJ, Cohen KE, Ioannou C, Kelly B, Reed K, Hulme R, Papageorghiou AT.
Noninvasive prenatal screening in twin pregnancies with cell-free DNA using the IONA test: a prospective multicenter study.
Am J Obstet Gynecol. 2021 Jul;225(1):79.e1-79.e13.

Drukker L, Impey L, Papageorghiou AT.
Fetal abnormalities detected during third trimester ultrasound for fetal growth.
Am J Obstet Gynecol. 2021 Jun;224(6):637-638.

Drukker L, Bradburn E, Rodriguez G, Roberts N, Impey L, Papageorghiou, A.
How often do we identify fetal abnormalities during routine population-based third-trimester ultrasound? A systematic review and meta-analysis.
BJOG. 2021 Jan;128(2):259-269.

Drukker L, Cavallaro A, Salim I, Ioannou C, Impey L, Papageorghiou AT.
How often do we incidentally find a fetal abnormality at the routine third-trimester growth scan? A population-based study.
Am J Obstet Gynecol. 2020 Dec;223(6):919.e1-919.e13.

De Burca A, Ioannou C, Vandersteen A, Pope FM, Cilliers DD.
Intrafamilial variability of clinical features in distal arthrogryposis type 2B.
Clin Dysmorphol. 2019 Jan;28(1):35-37.

Thakkar HS, Durell J, Chakraborty S, Tingle BL, Choi A, Fowler DJ, Gould SJ, Impey L, Lakhoo K.
Antenatally Detected Congenital Pulmonary Airway Malformations: The Oxford Experience.
Eur J Pediatr Surg. 2017 Aug;27(4):324-329.

Sidgwick P, Harrop E, Kelly B, Todorovic A, Wilkinson D.
Fifteen-minute consultation: perinatal palliative care.
Arch Dis Child Educ Pract Ed. 2017 Jun;102(3):114-116.

Bradshaw CJ, Thakkar H, Knutzen L, Marsh R, Pacilli M, Impey L, Lakhoo K. Accuracy of prenatal detection of tracheoesophageal fistula and oesophageal atresia.
J Pediatr Surg. 2016 Aug;51(8):1268-72.

Papageorghiou AT, Khalil A, Forman M, Hulme R, Mazey R, Mousa HA, Johnstone ED, McKelvey A, Cohen KE, Risley M, Denman W, Kelly B.
Clinical evaluation of the IONA test: a non-invasive prenatal screening test for trisomies 21, 18 and 13.
Ultrasound Obstet Gynecol. 2016 Feb;47(2):188-93.

Gajewska-Knapik K, Impey L.
Congenital lung lesions: Prenatal diagnosis and intervention.
Semin Pediatr Surg. 2015 Aug;24(4):156-9.

Thakkar HS, Bradshaw C, Impey L, Lakhoo K.
Post-natal outcomes of antenatally diagnosed intra-abdominal cysts: a 22-year single-institution series.
Pediatr Surg Int. 2015 Feb;31(2):187-90.

Mears A, Sadiq J, Impey L, Lakhoo K.
Antenatal bowel dilatation in gastroschisis: a bad sign?
Pediatr Surg Int. 2010; 26: 581-8.

Patel G, Sadiq J, Shenker N, Impey L, Lakhoo K.
Neonatal Survival of antenatally diagnosed exomphalos.
Paediatric Surgery International 2009; 25: 413-6.

Patel P, Farley J, Impey L, Lakhoo K.
Evaluation of a fetomaternal-surgical clinic for prenatal counselling of surgical anomalies.
Pediatr Surg Int. 2008 Apr;24(4):391-4.

Preterm Labour

Freegard GD, Donadono V, Impey L.
Emergency cerclage in twin and singleton pregnancies with 0mm cervical length or prolapsed membranes.
Acta Obstet Gynecol Scand. 2021 Nov;100(11):2003-2008.

Edwards K and Impey L.
Extreme preterm birth in the right place: a quality improvement project.
Arch Dis Child Fetal Neonatal Ed. 2020 Jul;105(4):445-448.

Hegarty J, Ismail AQ, Ioannou C, Anthony L, Impey L, Anthony M.
Intrapartum antibiotic prophylaxis for prevention of group B streptococcal disease in preterm infants.
Arch Dis Child Fetal Neonatal Ed. 2013 Mar;98(2):F188.

Gupta M, Emary K, Impey L.
Emergency cervical cerclage: predictors of success.
Journal of Maternal-Fetal and Neonatal Medicine 2010;23: 670-4.

Brettell R, Yeh P, Impey L.
The association between fetal gender and preterm delivery.
European Journal of Obstetrics and Gynaecology and Reproductive Biology 2008; 141: 123-6.

Fetal Cardiology

Donadono V, Manning N, Impey L.
The antenatal and postnatal consequences of antenatal exposure to prolonged low dose indomethacin.
J Clin Med. 2021 Apr 24;10(9):1851.

Aye CYL, Lewandowski AJ, Lamata P, Upton R, Davis E, Ohuma EO, Kenworthy Y, Boardman H, Frost AL, Adwani S, McCormick K, Leeson P.
Prenatal and postnatal cardiac development in offspring of hypertensive pregnancies.
JAHA. 2020 May 5;9(9):e014586.

Aye CYL, Lewandowski AJ, Oster J, Upton R, Davis EF, Kenworthy Y, Boardman H, Zu GZ, Siepmann T, Adwani S, McCormick K, Sverrisdottir YB, Leeson P.
Neonatal autonomic function after pregnancy complications and early cardiovascular development.
Pediatr Res. 2018 May;84(1):85-91.

Bridge CP, Ioannou C, Noble JA.
Automated annotation and quantitative description of ultrasound videos of the fetal heart.
Med Image Anal. 2016 Nov 19;36:147-161.

Placental Accreta Spectrum and Placental Imaging

Soleymani majd H, Collins SL, Addley S, Weeks E, Chakravarti S, Halder S, Alazzam M.
The modified radical peripartum cesarean hysterectomy (Soleymani-Alazzam-Collins technique): a systematic, safe procedure for the management of severe placenta accreta spectrum.
Am J Obstet Gynecol 2021;225(2):175 e1- e10.

Lloyd-Davies C, Collins SL, Burton GJ.
Understanding the uterine artery Doppler waveform and its relationship to spiral artery remodelling.
Placenta 2021; 105:78-84.

Looney P, Yin Y, Nicolaides KH, Plasencia W, Natsis S, Collins SL et al.
Fully Automated 3D Ultrasound Segmentation of the Placenta, Amniotic Fluid and Fetus for Early Pregnancy Assessment.
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 2021;68(6):2038-47.

Vieira MC, Rijke MJ, Braun T, Chantraine F, Morel O, Schwickert A, Stefanovic V, van Beekhuizen H, Collins SL on behalf of the International Society for Placenta accreta spectrum (IS-PAS).
The relation between maternal obesity and placenta accreta spectrum: A multinational database study.
Acta Obstet Gynecol Scand. 2021;100: 50-57.

Morel O, van Beekhuizen HJ, Braun T, Collins S, Pateisky P, Calda P, Henrich W, Al Naimi A, Nikoline Norgaardt L, Chalubinski KM, Sentilhe L, Tutschek B, Schwickert A, Stefanovic V, Bertholdt C on behalf of the International Society for Placenta accreta spectrum (IS-PAS).
Performance of antenatal imaging to predict placenta accreta spectrum degree of severity.
Acta Obstet Gynecol Scand 2021;100: 21-28.

Morlando M, Schwickert A, Stefanovic V, Gziri MM, Pateisky P, Chalubinski KM, Nonnenmacher A, Morel O, Braun T, Bertholdt C, Van Beekhuizen HJ, Collins SL on behalf of the International Society for Placenta accreta spectrum (IS-PAS).
Maternal and neonatal outcomes in planned versus emergency cesarean delivery for placenta accreta spectrum: A multinational database study.
Acta Obstet Gynecol Scand. 2021;100: 41-49.

Chantraine F, Stefanovi V, Braun T, Calda P, Martinelli P, Collins SL on behalf of the International Society for Placenta accreta spectrum (IS-PAS).
When a rare condition creates a scientific society: The history of the International Society for Placenta Accreta Spectrum (IS-PAS).
Acta Obstet Gynecol Scand. 2021; 100: 3- 6.

Fox K and Collins S.
Something old, something new and something borrowed.
BJOG. 2021;128: 1035-1036.

Fox KA, Cassady CI, Collins S, Einerson BD, Hobson SR, Palacios-Jaraquemada JM, Shrivastava VK, Lee W.
Placenta Accreta Spectrum 2021:
Roundtable Discussion. J Ultrasound Med. 2021 EPub: https://doi.org/10.1002/jum.15685.

Adu-Bredu TK, Owusu-Bempah A, Collins S.
Accurate prenatal discrimination of placenta accreta spectrum from uterine dehiscence is necessary to ensure optimal management.
BMJ Case Rep. 2021;14(7).

Addley S, Collins S, Alazzam M, Majd SH.
A complex case of abnormally invasive placenta (AIP) following six caesarean sections and previous bowel surgery.
BJOG.2021 128: 24-24.

Collins SL, Sentilhes L, Chantraine F, Jauniaux E.
Delayed hysterectomy: a laparotomy too far?
Am J Obstet Gynecol. 2020;222(2):101-2.

Kingdom JC, Hobson SR, Murji A, Allen L, Windrim RC, Lockhart E, Collins SL, Soleymani majd H, Alazzam M, Naaisa F, Shamshirsaz AA, Belfort MA, Fox KA.
Minimizing surgical blood loss at cesarean hysterectomy for placenta previa with evidence of placenta increta or placenta percreta: the state of play in 2020.
Am J Obstet Gynecol. 2020;223(3):322-9.

Morlando M, Collins S.
Placenta Accreta Spectrum Disorders: Challenges, Risks, and Management Strategies.
Int J Womens Health. 2020;12:1033-1045.

Looney P, Stevenson G, Collins S.
3D ultrasound file reading and coordinate transformations.
Journal of Open Source Software 2019; 4(33):1063.

Welsh AW, Fowlkes JB, Pinter SZ, Ives KA, Owens GE, Rubin JM, Kripfgans OD, Looney P, Collins SL, Stevenson GN.
Three-dimensional US Fractional Moving Blood Volume: Validation of Renal Perfusion Quantification.
Radiology. 2019;293(2):460-468.

Mathewlynn S, Collins SL.
Volume and vascularity: Using ultrasound to unlock the secrets of the first trimester placenta.
Placenta. 2019;84:32-6.

Jauniaux E, Ayres-De-Campos D, Langhoff-Roos J, Fox K, Collins SL.
FIGO classification for the clinical diagnosis of placenta accreta spectrum disorders. Int. JGO 2019;146(1):20-24.

Collins SL et al.
Evidence-based guidelines for the management of abnormally-invasive placenta (AIP): recommendations from the International Society for AIP.
AmJOG 2019;220(6):511-526.

Jauniaux E, Gronbeck L, Bunce C, Langhoff-Roos J, Collins SL.
Epidemiology of placenta previa accreta: a systematic review and meta-analysis.
BMJ Open 2019.;9(11):e031193.

Morel O, Collins SL, Uzan-Augui J, Masselli G, Duan J, Chabot-Lecoanet A-C, Braun T, Langhoff-Roos J, Soyer P, Chantraine F.
A proposal for standardized magnetic resonance imaging (MRI) descriptors of abnormally invasive placenta (AIP) - From the International Society for AIP.
Diagn Interv Imaging 2019; 100(6):319-325.

Jauniaux E, Dimitrova I, Kenyon N, Mhallem M, Kametas NA, Zosmer N, Hubinont C, Nicolaides KH, Collins SL.
Impact of placenta previa with placenta accreta spectrum disorder on fetal growth.
Ultrasound Obstet Gynecol 2019; 54(5):643-649.

Jauniaux E, Hussein AM, Fox KA, Collins SL.
New evidence-based diagnostic and management strategies for placenta accreta spectrum disorders.
Best Prac Res Clin Obstet Gynaecol 2019; 61:75-88.

Tol ID, Yousif M, Collins SL.
Post traumatic stress disorder (PTSD): The psychological sequelae of abnormally invasive placenta (AIP).
Placenta 2019; 81:42-45.

Jauniaux E, Alfirevic Z, Bhide AG, Belfort MA, Burton GJ, Collins SL, Dornan S, Jurkovic D, Kayem G, Kingdom J et al.
Placenta Praevia and Placenta Accreta: Diagnosis and Management: Green-top Guideline No. 27a.
BJOG 2019;126(1):e1-e48.

Jauniaux E, Alfirevic Z, Bhide AG, Burton GJ, Collins SL, Silver R.
Vasa Praevia: Diagnosis and Management:
Green-top Guideline No. 27b. 2019 BJOG; 126(1):e49-e61.

Sargent W, Collins SL.
Are women antenatally diagnosed with abnormally invasive placenta receiving optimal management in England? An observational study of planned place of delivery.
Acta Obstet Gynecol Scand. 2019; 98(3):337-341.

Chantraine F, Collins SL.
Prenatal ultrasound imaging for Placenta Accreta Spectrum (PAS): a practical guide.
Curr Obstet Gynaecol Reports 2019; 8(3):86-93.

Jauniaux E, Bhide A, Kennedy A, Woodward P, Hubinot C, Collins SL.
FIGO consensus guidelines on placenta accreta spectrum disorders: Prenatal diagnosis and screening.
Int. JGO. 2018;140(3):274-80.

Maynard H, Zamudio S, Jauniaux E, Collins SL.
The importance of bladder volume in the ultrasound diagnosis of placenta accreta spectrum disorders.
Int. JGO. 2018;140(3):332-7.

Collins SL, Chantraine F, Morgan TK, Jauniaux E.
Abnormally adherent and invasive placenta: A spectrum disorder in need of a name.
Ultrasound Obstet Gynecol. 2018;51(2):165-6.

Bjurström J, Collins SL, Langhoff-Roos J, Sundberg K, Jørgensen A, Duvekot JJ, Groenbeck L.
Failed manual removal of the placenta after vaginal delivery.
Arch Gyne Obs 2018;297(2):323-32.

Jauniaux E, Collins SL, Burton G.
Placenta accreta spectrum: pathophysiology and evidence-based anatomy for prenatal ultrasound imaging.
Am J Obstet Gynecol. 2018;218(1):75-87.

Looney P, Stevenson GN, Nicolaides KH, Plasencia W, Molloholli M, Natsis S, Collins SL.
Fully automated, real-time 3D-ultrasound segmentation to estimate first trimester placental volume using deep learning.
JCI Insight. 2018;3(11).

Stevenson GN, Noble JA, Welsh AW, Impey L, Collins SL.
Automated Visualization and Quantification of Spiral Artery Blood Flow Entering the First-Trimester Placenta, Using 3-D Power Doppler Ultrasound.
Ultrasound Med Biol. 2018;44(3):522-531.
 
Clark AR, James JL, Stevenson GN, Collins SL.
Understanding abnormal uterine artery Doppler waveforms: A novel computational model to explore potential causes within the utero-placental vasculature.
Placenta. 2018;66:74-81.

Looney P, Stevenson GN, Nicolaides KH, Plasencia W, Molloholli M, Natsis S, Collins SL.
Automatic 3D ultrasound segmentation of the first trimester placenta using deep learning.
Biomedical Imaging (ISBI 2017), 2017 IEEE 14th International Symposium on (pp. 279-282). IEEE.

Saghian R, James JL, Tawhai MH, Collins SL, Clark AR.
Association of placental jets and mega-jets with reduced villous density.
Journal of Biomechanical Engineering 2017; 139 (5), 051001.

Collins SL, Welsh AW, Impey L, Noble JA, Stevenson GN.
3D fractional moving blood volume (3D-FMBV) demonstrates decreased first trimester placental vascularity in pre-eclampsia but not the term, small for gestation age baby.
PLoS One. 2017 Jun 1;12(6):e0178675.

Stevenson GN, Collins SL, Ding J, Impey L, Noble JA.
3-D Ultrasound Segmentation of the Placenta Using the Random Walker Algorithm: Reliability and Agreement.
Ultrasound Med Biol. 2015 Dec;41(12):3182-93.

Collins SL, Stevenson GN, Al-Khan A, Illsley NP, Impey L, Pappas L, Zamudio S.
Three-Dimensional Power Doppler Ultrasonography for Diagnosing Abnormally Invasive Placenta and Quantifying the Risk.
Obstet Gynecol. 2015 Sep;126(3):645-53.

Aye CY, Stevenson GN, Impey L, Collins SL.
Comparison of 2-D and 3-D estimates of placental volume in early pregnancy.
Ultrasound Med Biol. 2015 Mar;41(3):734-40.

Collins SL, Stevenson GN, Noble JA, Impey L.
Rapid calculation of standardised placental volume at 11-13 weeks and the prediction of the term, small for gestational age baby.
Ultrasound in Medicine and Biology 2013 Feb;39(2):253-60.

Collins S, Stevenson G, Noble A, Impey L.
Developmental changes in spiral artery blood flow in the human placenta observed with colour Doppler ultrasonography.
Placenta. 2012 Oct;33(10):782-7.

Fetal Ultrasound

Self A, Daher L, Schlussel M, Roberts N, Ioannou C, Papageorghiou AT.
Second and third trimester estimation of gestational age using ultrasound or maternal symphysis-fundal height measurements: A systematic review.
BJOG. 2022 Feb 14.

Drukker L, Droste R, Ioannou C, Impey L, Noble JA, Papageorghiou AT.
Function and Safety of SlowflowHD Ultrasound Doppler in Obstetrics.
Ultrasound Med Biol. 2022 Mar 14:S0301-5629(22)00075-8.

Aderoba AK, Nasir N, Quigley M, Impey L, Rivero-Arias O, Kurinczuk JJ.
Late pregnancy ultrasound parameters identifying fetuses at risk of adverse perinatal outcomes: a protocol for a systematic review of systematic reviews.
BMJ Open. 2022 Mar 23;12(3):e058293.

Yaqub M, Kelly B, Noble JA, Papageorghiou AT.
The effect of maternal body mass index on fetal ultrasound image quality.
Am J Obstet Gynecol. 2021 Aug;225(2):200-202.

Donadono V, Cavallaro A, Roberts NW, Ioannou C, Papageorghiou AT, Napolitano R.
A Systematic Review of Methodology Used in Studies Aimed at Creating Charts of Fetal Brain Structures.
Diagnostics (Basel). 2021 May 21;11(6):916.

Ruiz-Martinez S, Volpe G, Vannuccini S, Cavallaro A, Impey L, Ioannou C.
An objective scoring method to evaluate image quality of middle cerebral artery Doppler.
J Matern Fetal Neonatal Med. 2020 Feb;33(3):421-426.

Bandeira Diniz P, Yin Y, Collins S.
Deep Learning strategies for Ultrasound in Pregnancy.
EMJ. 2020; 6(1):73-80.

Looney P, Stevenson G, Collins S.
3D ultrasound file reading and coordinate transformations.
Journal of Open Source Software 2019; 4(33):1063.

Welsh AW, Fowlkes JB, Pinter SZ, Ives KA, Owens GE, Rubin JM, Kripfgans OD, Looney P, Collins SL, Stevenson GN.
Three-dimensional US Fractional Moving Blood Volume: Validation of Renal Perfusion Quantification.
Radiology. 2019;293(2):460-468.

Yaqub M, Kelly B, Stobart H, Napolitano R, Noble JA, Papageorghiou AT.
Quality-improvement program for ultrasound-based fetal anatomy screening using large-scale clinical audit.
Ultrasound Obstet Gynecol 2019 Aug;54(2):239-245.

Ruiz-Martinez S, Volpe G, Vannuccini S, Cavallaro A, Impey L, Ioannou C.
An objective scoring method to evaluate image quality of middle cerebral artery Doppler.
J Matern Fetal Neonatal Med. 2018 Jun 27:1-181.

Molloholli M, Napolitano R, Ohuma EO, Ash S, Wanyonyi SZ, Cavallaro A, Giudicepietro A, Barros F, Carvalho M, Norris S, Min AM, Zainab G, Papageorghiou AT.
Image-scoring system for umbilical and uterine artery pulsed-wave Doppler ultrasound measurement.
Ultrasound Obstet Gynecol. 2019 Feb;53(2):251-255.

Cavallaro A, Ash ST, Napolitano R, Wanyonyi S, Ohuma EO, Molloholli M, Sande J, Sarris I, Ioannou C, Norris T, Donadono V, Carvalho M, Purwar M, Barros FC, Jaffer YA, Bertino E, Pang R, Gravett MG, Salomon LJ, Noble JA, Altman DG, Papageorghiou AT.
Quality control of ultrasound for fetal biometry: results from the INTERGROWTH-21(st) Project.
Ultrasound Obstet Gynecol. 2018 Sep;52(3):332-339.

Yaqub M, Kelly B, Papageorghiou A, Noble A.
A Deep Learning Solution for Automatic Fetal Neurosonographic Diagnostic Plane Verification Using Clinical Standard Constraints.
Ultrasound in Medicine & Biology 2017 Dec;43(12):2925-2933.

Sande JA, Ioannou C, Sarris I, Ohuma EO, Papageorghiou AT.
Reproducibility of measuring amniotic fluid index and single deepest vertical pool throughout gestation.
Prenat Diagn. 2015 May;35(5):434-9.

Stevenson GN, Collins SL, Welsh AW, Impey L, Noble JA.
A technique for the estimation of fractional moving blood volume by using three-dimensional power Doppler US.
Radiology. 2015 Jan;274(1):230-7.

Napolitano R, Dhami J, Ohuma EO, Ioannou C, Conde-Agudelo A, Kennedy SH, Villar J, Papageorghiou AT.
Pregnancy dating by fetal crown-rump length: a systematic review of charts.
BJOG. 2014 Apr;121(5):556-65.

Ioannou C, Sarris I, Napolitano R, Ohuma E, Javaid MK, Papageorghiou AT.
A longitudinal study of normal fetal femur volume.
Prenat Diagn. 2013 Nov;33(11):1088-94.

Yaqub MK, Ioannou C, Javaid MK, Cooper C, Papageorghiou AT, Noble JA.
Fusion of 3D Ultrasound Images of the Fetal Femur Improves Boundary Definition and Volume Measurement.
Fetal Diagn Ther. 2013;34(3):158-65.

Papageorghiou AT, Sarris I, Ioannou C et al.
Ultrasound methodology used to construct the fetal growth standards in the INTERGROWTH-21st Project.
BJOG. 2013 Sep;120 Suppl 2:27-32.

Sarris I, Ioannou C, Ohuma EO et al.
Standardisation and quality control of ultrasound measurements taken in the INTERGROWTH-21st Project.
BJOG. 2013 Sep;120 Suppl 2:33-7.

Yaqub MK, Ioannou C, Javaid MK et al.
Fusion of 3D Ultrasound Images of the Fetal Femur Improves Boundary Definition and Volume Measurement.
Fetal Diagn Ther. 2013;34(3):158-65.

Ioannou C, Sarris I, Hoch L et al.
Standardisation of crown-rump length measurement.
BJOG. 2013 Sep;120 Suppl 2:38-41.

Sarris I, Ohuma E, Ioannou C et al.
Fetal biometry: how well can offline measurements from 3D volumes substitute real time 2D measurements?
Ultrasound Obstet Gynecol. 2013 Nov;42(5):560-70.

Welsh AW, Collins SL, Stevenson GN, Noble JA, Impey L.
Inapplicability of fractional moving blood volume technique to standardize Virtual Organ Computer-aided AnaLysis indices for quantified three-dimensional power Doppler.
Ultrasound Obstet Gynecol. 2012 Dec;40(6):688-92.

Collins SL, Stevenson GN, Noble JA, Impey L, Welsh AW.
Influence of power Doppler gain setting on Virtual Organ Computer-aided AnaLysis indices in vivo: can use of the individual sub-noise gain level optimize information? Ultrasound Obstet Gynecol. 2012 Jul;40(1):75-80.

Ioannou C, Javaid MK, Mahon P, Yaqub MK, Harvey NC, Godfrey KM, Noble JA, Cooper C, Papageorghiou AT.
The effect of maternal vitamin D concentration on fetal bone.
J Clin Endocrinol Metab. 2012 Nov;97(11):E2070-7.

Ioannou C, Talbot K, Ohuma E, Sarris I, Villar J, Conde-Agudelo A, Papageorghiou AT.
Systematic review of methodology used in ultrasound studies aimed at creating charts of fetal size.
BJOG. 2012 Nov;119(12):1425-39.

Sarris I, Ioannou C, Chamberlain P et al.
Intra- and inter- observer variability in fetal measurements by ultrasound.
Ultrasound Obstet Gynecol. 2012; 39: 266-273.

Ioannou C, Sarris I, Javaid MK, Papageorghiou AT.
Sphenoidal fontanelle area measurement on rendered 3D ultrasound.
Prenat Diagn. 2012 Jun;32(6):592-5.

Ioannou C, Sarris I, Salomon LJ, Papageorghiou AT.
A review of fetal volumetry: the need for standardization and definitions in measurement methodology.
Ultrasound Obstet Gynecol. 2011;38: 613-619.

Sarris I, Ioannou C, Dighe M et al.
Standardization of fetal ultrasound biometry measurements: improving the quality and consistency of measurements.
Ultrasound Obstet Gynecol. 2011;38(6): 681–687.

Ioannou C, Sarris I, Yaqub MK, Noble JA, Javaid MK, Papageorghiou AT.
Surface area measurement using rendered three dimensional ultrasound imaging: an in vitro phantom study.
Ultrasound Obstet Gynecol. 2011;38(4):445-449.

General Obstetrics

Mathewlynn S, Knutzen L, Impey L.
Intrapartum Hypoxia and Sexual dimorphism in adverse perinatal outcomes. European Journal of Obstetrics and Gynecology and Reproductive biology 2020: 248; 9-13.

Cerdeira AS, O'Sullivan J, Ohuma EO, Harrington D, Szafranski P, Black R, Mackillop L, Impey L, Greenwood et al.
Randomized Interventional Study on Prediction of Preeclampsia/Eclampsia in Women With Suspected Preeclampsia: INSPIRE.
Hypertension. 2019 Oct;74(4):983-990.

Bhatia M, Mitsi V, Court L, Thampi P, El-Nasharty M, Hesham S, Randall W, Davies R, Impey L.
The outcomes of pregnancies with reduced fetal movements: A retrospective cohort study.
Acta Obstet Gynecol Scand. 2019 Nov;98(11):1450-1454.

Melo P, Georgiou E, Hedditch A, Ellaway P, Impey L.
External cephalic version at term: a cohort study of 18 years' experience.
BJOG. 2019 Mar;126(4):493-499.

Impey O, Greenwood C, Impey L.
External Cephalic Version after Previous Cesarean Section: A Prospective Cohort Study of 100 Consecutive Attempts.
European Journal of Obstetrics & Gynecology and Reproductive Biology 2018 Dec;231:210-213.

Melo P, Georgiou E, Hedditch A, Ellaway P, Impey L.
External cephalic version at term: a cohort study of 18 years' experience.
BJOG. 2019 Mar;126(4):493-499.

Knutzen L, Aye C, Anderson-Knight H, Svirko E, Impey L.
Arterio-venous differences in cord gas analysis and the prediction of adverse neonatal outcome.
Acta Obstet Gynecol Scand. 2018 Jun;97(6):688-693.

Knutzen L, Anderson-Knight H, Svirko E, Impey L.
Umbilical cord arterial base deficit versus pH as predictors of adverse outcome in term neonates.
Int J Gynaecol Obstet. 2018 Jul;142(1):66-70.

Knutzen L, Svirko E, Impey L.
The significance of base deficit in acidemic term neonates.
Am J Obstet Gynecol. 2015 Sep;213(3):373.e1-7.

Hemelaar J, Lim LN, Impey L.
The Impact of an ECV Service is Limited by Antenatal Breech Detection: A Retrospective Cohort Study.
Birth. 2015 Jun;42(2):165-72.

Yeh P, Emary K, Impey L.
The relationship between umbilical cord arterial pH and serious adverse neonatal outcomes: analysis of 51 519 consecutive validated samples.
BJOG 2012; 119:824-831.

Gupta M, Hockley C, Quigley M, Yeh P, Impey L.
Antepartum and intrapartum risk factors for shoulder dystocia.
European Journal of Obstetrics and Gynaecology and Reproductive Biology 2010; 151: 134-8.

L Impey, C Greenwood, R Black, P Yeh, O Sheil, P Doyle.
The relationship between intrapartum maternal fever and acidosis as risk factors for neonatal encephalopathy.
American Journal of Obstetrics and Gynecology 2008; 198: 49.e1-6.

Svirko E, Mellanby J, Impey L.
The association between cord pH at birth and intellectual function in childhood.
Early Human Development 2008; 84: 37-41.

Patel P, Farley J, Impey L, Lakhoo K.
Evaluation of a fetomaternal-surgical clinic for prenatal counselling of surgical anomalies.
Pediatr Surg Int. 2008 Apr;24(4):391-4.

Collins S, Ellaway P, Harrington D, Pandit M, Impey L.
The complications of external cephalic version: results from 805 consecutive attempts.
BJOG 2007 114: 636-8.

Impey L, Pandit M.
Tocolysis for repeat external cephalic version after a failed version for breech presentation at term: a randomised double-blind placebo controlled trial.
BJOG 2005; 112: 627-31.

Greenwood C, Yudkin P, Sellers S, Impey L, Doyle P.
Why is there a modifying effect of gestational age on risk factors for cerebral palsy?
Archives of Disease in Childhood Fetal and Neonatal Edition 2005; 90: F141-F146.

Impey L, MacQuillan K, Reynolds M, Gates S, Murphy J, Sheil O.
Admission cardiotocography: a randomised controlled trial.
The Lancet 2003; 361: 465-70.

Greenwood C, Lalchandani S, MacQuillan K, Sheil O, Murphy J, Impey L.
Meconium passed in labor: how reassuring is clear amniotic fluid?
Obstetrics and Gynecology 2003; 102: 89-93.

Greenwood C, Newman S, Impey L, Johnson A.
Cerebral palsy and clinical negligence litigation: a cohort study.
BJOG 2003; 110: 6-11.

Greenwood C, Impey L.
The association of nuchal cord with cerebral palsy is influenced by recording bias.
Early Human Development 2002; 68:15.

Impey L, Greenwood C, MacQuillan K, Reynolds M, Sheil O.
Maternal fever and neonatal encephalopathy: a prospective cohort study.
British Journal of Obstetrics and Gynaecology 2001; 108: 594-7.

Impey L, Greenwood C, Sheil O, MacQuillan K, Reynolds M, Redman C.
The relationship between pre-eclampsia at term and neonatal encephalopathy.
Archives of Diseases in Childhood, Fetal and Neonatal Edition 2001; 85: F170-2.

Impey L, Robson M, MacQuillan K.
Epidural analgesia need not affect operative delivery rates.
American Journal of Obstetrics and Gynecology 2000; 182: 358-63.

Impey L, Hobson J, O'Herlihy C.
The graphic analysis of active management of labor: prospective computation of labor progress in 500 consecutive nulliparous women in spontaneous labour at term.
American Journal of Obstetrics and Gynecology 2000; 183: 438-43.

Impey L, Lissoni D.
Outcome of external cephalic version after 36 weeks' gestation without tocolysis.
Journal of Maternal-Fetal Medicine 1999; 8: 203-7.

Impey L, O'Herlihy C.
First delivery after strictly defined cephalopelvic disproportion.
Obstetrics and Gynecology 1998; 92: 799-803.

Impey L, Hughes J.
Abdominal pain in Pregnancy: who needs to be admitted? Admissions in a district general hospital in one year.
Journal of Obstetrics and Gynaecology 1995; 15: 363-5.

Bryant P, Impey L.
The similarities between normal readers and developmental and acquired dyslexics.
Cognition 1986; 24:12-25 (Citation classic).