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Félix Ratjen

The Hospital for Sick Children

84H-index
752Paper Count
3.0WCitation Count
Published Papers 349
Publication Date
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Lung mucus burden and treatment response assessed by MRI in the post-modulator era
errJournal of Cystic Fibrosis
IF6
err2026-05-24
err0
PREAI
errAlexander M Matheson; Evan Prather; Matthew M Willmering; Jaime Mata; Giles Santyr; Felix A Ratjen; Elizabeth L Kramer; Zackary I Cleveland; Jason C Woods
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errSave
Automated Ultrashort Echo Time (UTE) MRI Low Signal Volume Analysis in Stable Pediatric Cystic Fibrosis and After Elexacaftor/Tezacaftor/Ivacaftor Therapy
errJournal of Magnetic Resonance Imaging
IF3.5
err2026-05-04
err0
PREAI
errBrandon Zanette; Jared Bierbrier; Samal Munidasa; Daniel Genkin; Miranda Kirby; Felix Ratjen; Giles Santyr
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errSave
The Impact of Nutritional Status on Lung Function Trajectories in Pediatric Patients With Primary Ciliary Dyskinesia
errPediatric Pulmonology
IF2.3
err2026-04-19
err0
PREAI
errMcCoy, Jacob; Gatt, Dvir; Shaw, Michelle; Solomon, Melinda; Kritzinger, Fiona; Ratjen, Felix
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errSave
Treatment with elexacaftor/tezacaftor/ivacaftor does not alter SpiroNose-derived electronic breath profiles in children with cystic fibrosis
errJournal of Cystic Fibrosis
IF6
err2026-03-24
err0
errOAAI
errElias Seidl; Andrew Zikic; Srdjan Micic; Rianne de Vries; Julie Avolio; Alexander Moeller; Felix Ratjen; Hartmut Grasemann
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errSave
Impact of elexacaftor/tezacaftor/ivacaftor on gastrointestinal outcomes, inflammation, exocrine pancreatic function and fat malabsorption: Report of PROMISE pediatric substudy
errJournal of Cystic Fibrosis
IF6
err2026-02-14
err0
PREAI
errNicole Green; Phuong Vu; Jing Xie; Sarah Jane Schwarzenberg; Steven Freedman; Michael Narkewicz; Jessica Pittman; Felix Ratjen; Margaret Rosenfeld; Christopher Pope; Jennifer Duong; Lucas Hoffman; Sonya Heltshe; Sarah S. Lusman
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errSave
Sputum Biomarkers of Inflammation to Track Acute Respiratory Events in School-Age Children with Cystic Fibrosis
errInternational Journal of Molecular Sciences
IF4.9
err2026-02-07
err0
errOAAI
errElad Ben-Meir; Lucy Perrem; Gyde Nissen; Michelle Shaw; Felix Ratjen; Hartmut Grasemann
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errSave
Comparison of Single-Breath and Multi-Breath Xe-MRI in the Longitudinal Assessment of Treatment in Children With Cystic Fibrosis
errJournal of Magnetic Resonance Imaging
IF3.5
err2026-01-29
err0
errOAAI
errFaiyza S. Alam; Samal Munidasa; Brandon Zanette; Daniel Li; Sharon Braganza; Felix Ratjen; Giles Santyr
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errSave
Long-Term Outcomes of Transarterial Embolization for Pulmonary Arteriovenous Malformations in Pediatric Hereditary Hemorrhagic Telangiectasia
errCardioVascular and Interventional Radiology
IF2.9
err2025-12-28
err0
PREAI
errAlfredo Páez-Carpio; Adeline Y. L. Lim; Alessandro Gasparetto; Michelle Shaw; Felix Ratjen; João G. Amaral
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errSave
Elexacaftor/tezacaftor/ivacaftor is associated with long-term reduction in use of chronic respiratory therapies in cystic fibrosis
errJournal of Cystic Fibrosis
IF6
err2025-11-29
err0
PREAI
errScott D. Sagel; Phuong Vu; Sonya L. Heltshe; George M. Solomon; Andrea Kelly; Jessica Pittman; Margaret Rosenfeld; Felix Ratjen
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errSave
Structural and functional pulmonary MRI to predict pulmonary exacerbations in Cystic Fibrosis
errCHEST
IF8.6
err2025-11-13
err0
PREAI
errAlexander M. Matheson; Abdullah S. Bdaiwi; Matthew M. Willmering; Mark W. DiFrancesco; Zackary I. Cleveland; Giles E. Santyr; Felix Ratjen; Elizabeth L. Kramer; Rhonda D. Szczesniak; Jason C. Woods
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errSave
GWAS SVatalog: a visualization tool to aid fine-mapping of GWAS loci with structural variations
errHeredity
IF3.9
err2025-11-07
err0
errOAAI
errShalvi Chirmade; Zhuozhi Wang; Scott Mastromatteo; Eric Sanders; Bhooma Thiruvahindrapuram; Thomas Nalpathamkalam; Giovanna Pellecchia; Fan Lin; Katherine Keenan; Rohan V. Patel; Wilson WL Sung; Delnaz Roshandel; Joe Whitney; Sana Allana; Julie Avolio; Paul DW Eckford; Felix Ratjen; Lisa J. Strug
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errSave
Comparison of phase-resolved functional lung (PREFUL) and hyperpolarized 129Xe MRI for longitudinal monitoring of lung function in pediatric cystic fibrosis following elexacaftor/tezacaftor/ivacaftor
errPEDIATRIC RADIOLOGY
IF2.3
err2025-09-01
err0
PREAI
errMunidasa, Samal; Alam, Faiyza; Zanette, Brandon; Li, Daniel; Wee, Wallace; Braganza, Sharon; Woods, Jason; Ratjen, Felix; Santyr, Giles
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errSave
Biomarkers associated with clinical response to cystic fibrosis pulmonary exacerbation treatment and adjuvant prednisone therapy
errJournal of Cystic Fibrosis
IF6
err2025-09-01
err0
errOAAI
errBradley S. Quon; Jasleen K. Matta; Michelle Shaw; Hartmut Grasemann; Felix Ratjen; Valerie Waters
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errSave
Repeatability of Multiple Breath Washout in Pediatric Primary Ciliary Dyskinesia
errPediatric Pulmonology
IF2.3
err2025-07-11
err0
errOAAI
errWallace B. Wee; Layan M. Bashi; Renee Jensen; Jonathan H. Rayment; Teresa To; Felix Ratjen; Giles Santyr; Sharon D. Dell
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errSave
Application of the defect distribution index to functional lung MRI of pediatric cystic fibrosis lung disease and controls
errJournal of Cystic Fibrosis
IF6
err2025-03-10
err0
errOAAI
errElisabeth Kieninger; Samal Munidasa; Marion Curdy; Carmen Streibel; Brandon Zanette; Jason Woods; Philipp Latzin; Felix Ratjen; Giles Santyr
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errSave
Does using the Lung Clearance Index (LCI) inform clinical decisions in children with cystic fibrosis?
errJournal of Cystic Fibrosis
IF6
err2025-01-11
err0
PREAI
errLucy Perrem; Stephanie Jeanneret-Manning; Stephanie D. Davis; Margaret Rosenfeld; Todd Edwards; Sanja Stanojevic; Felix Ratjen
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errSave
Brain and lung arteriovenous malformation rescreening practices for children and adults with hereditary hemorrhagic telangiectasia
errORPHANET JOURNAL OF RARE DISEASES
IF3.5
err2024-11-09
err0
errOAAI
errBeslow, Lauren A.; Kim, Helen; Hetts, Steven W.; Ratjen, Felix; Clancy, Marianne S.; Gossage, James R.; Faughnan, Marie E.
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Variability of lung function tests in primary ciliary dyskinesia
errEUROPEAN RESPIRATORY JOURNAL
IF21
err2024-10-30
err0
PREAI
errGatt, Dvir; Shaw, Michelle; Kritzinger, Fiona; Solomon, Melinda; Dell, Sharon; Ratjen, Felix
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errSave
Ventilation defect percentage from PREFUL MRI in pediatric primary ciliary dyskinesia
errEUROPEAN RESPIRATORY JOURNAL
IF21
err2024-10-30
err0
PREAI
errWee, Wallace; Zanette, Brandon; Munidasa, Samal; Braganza, Sharon; Li, Daniel; Ratjen, Felix; Dell, Sharon; Santyr, Giles
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errSave
CFTR modulator therapy does not alter breath profiles in cystic fibrosis
errEUROPEAN RESPIRATORY JOURNAL
IF21
err2024-10-30
err0
PREAI
errSeidl, Elias; Zikic, Andrew; De Vries, Rianne; Ratjen, Felix; Grasemann, Hartmut
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errSave

Research Directions

No research directions
Co-authors
Cooperation Journals
N
Nicholette D. Palmer
H-index: 148 · Papers: 216
P
Peter G. Gibson
H-index: 143 · Papers: 1.6K
B
Bruce Thompson
H-index: 142 · Papers: 2.0K
I
Ian Pavord
H-index: 126 · Papers: 1.3K
P
Peter D. Sly
H-index: 119 · Papers: 1.4K
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