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G

Greg Ryan

university of toronto

51H-index
408Paper Count
9.9KCitation Count
Published Papers 125
Publication Date
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Response to Commentary on Virtual Reality Simulation in Teaching Fetoscopic Laser Placental Photocoagulation in Twin-To-Twin Transfusion Syndrome
errPrenatal Diagnosis
IF2.7
err2026-03-01
err0
PREAI
errWindrim, Catherine; Charleson, Colin; Gualdron, David Rojas; Quevedo, Alvaro; Gotha, Lara; Van Mieghem, Tim; Ryan, Greg; Windrim, Rory
errShare
errSave
Comparison of Insertion Difficulties and Performance of Thoracoamniotic Shunts for Fetal Hydrothorax
errPRENATAL DIAGNOSIS
IF2.7
err2025-12-01
err0
PREAI
errTreurniet, Tess T.; Abbasi, Nimrah; Ryan, Greg; Witlox, Ruben S. G. M.; Slaghekke, Femke; Norgaard, Lone Nikoline; Sundberg, Karin; Lindgren, Peter; Ek, Sverker; Thilaganathan, Basky; Blayney, Gillian; Devlieger, Roland; Lewi, Liesbeth; Johnson, Anthony; Pacora Portella, Percy N.; David, Anna L.; Vieira, Matias; Khalil, Asma; Poljak, Borna; Vonzun, Ladina; Ochsenbein-Koelble, Nicole; Choolani, Mahesh; Gosavi, Arundhati; Moise, Kenneth J.; Hutson, Emily; Verweij, E. J. T. Joanne; Haak, Monique C.
errShare
errSave
The Impact of Maternal Body Mass Index on Fetoscopic Laser Surgery for Twin-Twin Transfusion Syndrome
errFETAL DIAGNOSIS AND THERAPY
IF1.6
err2025-12-01
err0
PREAI
errVan Der Veeken, Lennart; Ziarko, Isabelle; Kunpalin, Yada; Abbasi, Nimrah; Keunen, Johannes; Flores-Mendoza, Homero; Van Mieghem, Tim; Ryan, Greg
errShare
errSave
Maternal-fetal complications of non-immune fetal hydrops - mirror syndrome and hypereactio luteinalis with ovarian torsion: A case report
errCASE REPORTS IN WOMENS HEALTH
IF0.6
err2025-12-01
err0
errOAAI
errBartels, Helena C.; Ryan, Greg; Jaeggi, Edgar; Flores-Mendoza, Homero
errShare
errSave
Sperm DNA Fragmentation and Reproductive Outcomes After Multistep Density Gradient Sperm Preparation
errJOURNAL OF SEXUAL MEDICINE
IF3.3
err2025-11-01
err0
errOAAI
errLindell, L.; Muller, C.; Onyewuenyi, T.; Johnson, A.; Chung, R.; Ryan, G.; Walsh, T.; Nicholson, T.
errShare
errSave
Fetal therapy with mTOR inhibitors in cardiac rhabdomyoma and lymphatic malformations
errBest Practice & Research Clinical Obstetrics & Gynaecology
IF4.1
err2025-10-30
err0
errOAAI
errNikan Zargarzadeh; Pegah Rashidian; Tishi Shah; Greg Ryan; Yalda Afshar
errShare
errSave
Digital Footprints, Green Impact: User Engagement Analysis of a Conference Management Platform at the 41st Annual IFMSS Meeting
errFETAL DIAGNOSIS AND THERAPY
IF1.6
err2025-10-01
err0
errOAAI
errWindrim, Catherine; Hojabri, Sara F.; Gotha, Lara; Ryan, Greg; Windrim, Rory; Dada, Jazleen
errShare
errSave
Surveillance of Monochorionic Twins for Detection of Twin-Twin Transfusion Syndrome and Twin Anemia Polycythemia Sequence: A North American Fetal Therapy Network (NAFTNet) Consensus Statement
errAmerican Journal of Obstetrics and Gynecology
IF8.4
err2025-07-05
err0
PREAI
errClifton O. Brock; Ahmet A. Baschat; Julie S. Moldenhauer; Greg Ryan; Anthony Johnson
errShare
errSave
Single fetal demise in twin anemia–polycythemia sequence: perinatal outcome of surviving cotwin
errUltrasound in Obstetrics & Gynecology
IF6.3
err2025-05-19
err0
errOAAI
errM. J. A. van de Sande; E. Lopriore; M. Lanna; Y. Ville; L. Lewi; A. S. Weingertner; G. Ryan; L. Otaño; P. Klaritsch; A. M. B. Blanco; E. Bevilacqua; F. Slaghekke; L. S. A. Tollenaar
errShare
errSave
Variability in antenatal prognostication of congenital diaphragmatic hernia by magnetic resonance imaging across the North American Fetal Therapy Network (NAFTNet)
errULTRASOUND IN OBSTETRICS & GYNECOLOGY
IF6.3
err2025-05-08
err0
errOAAI
errAbbasi, N.; Kajal, D.; Johnson, A.; Ryan, G.; Sanz-Cortes, M.; Lee, S.; Shah, P. S.; Perrone, E. E.
errShare
errSave
Virtual Reality Simulation in Teaching Fetoscopic Laser Placental Photocoagulation in Twin-To-Twin Transfusion Syndrome
errPRENATAL DIAGNOSIS
IF2.7
err2025-05-01
err0
errOAAI
errWindrim, Catherine; Charleson, Colin; Gualdron, David Rojas; Quevedo, Alvaro; Gotha, Lara; Van Mieghem, Tim; Ryan, Greg; Windrim, Rory
errShare
errSave
Fetoscopic Robotic Open Spina Bifida Treatment (FROST): A Preclinical Feasibility and Learning Curve Study
errbjog an international journal of obstetrics and gynaecology
IF0
err2025-04-03
err0
errOAAI
errYada Kunpalin; Charlotte C. Kik; Francis Lebouthillier; Nimrah Abbasi; Greg Ryan; Jochem Spoor; Thomas Looi; Abhaya V. Kulkarni; Tim Van Mieghem
errShare
errSave
Periventricular echogenicity in fetuses with hemoglobin Bart disease: a potential sonographic marker
errAMERICAN JOURNAL OF OBSTETRICS & GYNECOLOGY MFM
IF3.1
err2025-04-01
err0
PREAI
errSichitiu, Joanna; Vlachodimitropoulou, Elina; Shannon, Patrick; Verweij, Joanne; Shinar, Shiri; Ryan, Greg; Blaser, Susan; Krishnan, Pradeep; Van Mieghem, Tim
errShare
errSave
Management of pregnancies with anti-K alloantibodies and the predictive value of anti-K titration testing
errLANCET HAEMATOLOGY
IF17.7
err2024-11-01
err0
PREAI
errVlachodimitropoulou, Evangelia; Shehata, Nadine; Ryan, Greg; Clarke, Gwen; Lieberman, Lani
errShare
errSave
Fetal lower urinary tract obstruction: international Delphi consensus on management and core outcome set
errULTRASOUND IN OBSTETRICS & GYNECOLOGY
IF6.3
err2024-10-31
err1
errOAAI
errMustafa, H. J.; Khalil, A.; Johnson, S.; Gordijn, S. J.; Ganzevoort, W.; Melling, C.; Koh, C. J.; Mandy, G. T.; Kilby, M. D.; Johnson, A.; Quintero, R. A.; Ryan, G.; Shamshirsaz, A. A.; Nassr, A. A.
errShare
errSave
Fetoscopic Endoluminal Tracheal Occlusion for Severe, Left-Sided Congenital Diaphragmatic Hernia The North American Fetal Therapy Network Fetoscopic Endoluminal Tracheal Occlusion Consortium Experience
errOBSTETRICS AND GYNECOLOGY
IF4.7
err2023-12-21
err8
errOAAI
errBergh, Eric; Baschat, Ahmet A.; Cortes, Magdalena Sanz; Hedrick, Holly L.; Ryan, Greg; Lim, Foong-Yen; Zaretsky, Michael V.; Schenone, Mauro H.; Crombleholme, Timothy M.; Ruano, Rodrigo; Gosnell, Kristen A.; Johnson, Anthony
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errSave
National and international guidelines on the management of twin pregnancies: a comparative review
errAMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY
IF8.4
err2023-12-01
err13
PREAI
errWeitzner, Omer; Barrett, Jon; Murphy, Kellie E.; Kingdom, John; Aviram, Amir; Mei-Dan, Elad; Hiersch, Liran; Ryan, Greg; Van Mieghem, Tim; Abbasi, Nimrah; Fox, Nathan S.; Rebarber, Andrei; Berghella, Vincenzo; Melamed, Nir
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errSave
Diagnosis and management of congenital diaphragmatic hernia: a 2023 update from the Canadian Congenital Diaphragmatic Hernia Collaborative
errARCHIVES OF DISEASE IN CHILDHOOD-FETAL AND NEONATAL EDITION
IF3.6
err2023-10-25
err29
PREAI
errPuligandla, Pramod; Skarsgard, Erik; Baird, Robert; Guadagno, Elena; Dimmer, Alexandra; Ganescu, Olivia; Abbasi, Nimrah; Altit, Gabriel; Brindle, Mary; Fernandes, Sairvan; Dakshinamurti, Shyamala; Flageole, Helene; Hebert, Audrey; Keijzer, Richard; Offringa, Martin; Patel, Dylan; Ryan, Greg; Traynor, Michael; Zani, Augusto; Chiu, Priscilla
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errSave
Decreased left heart flow in fetal lambs causes left heart hypoplasia and pro-fibrotic tissue remodeling
errCOMMUNICATIONS BIOLOGY
IF5.1
err2023-07-22
err5
errOAAI
errReuter, Miriam S.; Sokolowski, Dustin J.; Diaz-Mejia, J. Javier; Keunen, Johannes; de Vrijer, Barbra; Chan, Cadia; Wang, Liangxi; Ryan, Greg; Chiasson, David A.; Ketela, Troy; Scherer, Stephen W.; Wilson, Michael D.; Jaeggi, Edgar; Chaturvedi, Rajiv R.
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errSave
Correlation of fetal ventricular size and need for postnatal cerebrospinal fluid diversion surgery in open spina bifida
errULTRASOUND IN OBSTETRICS & GYNECOLOGY
IF6.3
err2022-06-01
err7
PREAI
errAgrawal, S.; Al-Refai, A.; Abbasi, N.; Kulkarni, A. V.; Pruthi, V.; Drake, J.; Ryan, G.; Van Mieghem, T.
errShare
errSave

Research Directions

No research directions
Co-authors
Cooperation Journals
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K. H. Nicolaides
H-index: 176 · Papers: 2.3K
S
Stephen W. Scherer
H-index: 161 · Papers: 1.1K
B
Brian W. McCrindle
H-index: 119 · Papers: 1.1K
R
R. O’Shaughnessy
H-index: 118 · Papers: 577
S
Sonia S. Hassan
H-index: 99 · Papers: 624
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