R
Roya Etemad-Rezai
Researcher at University of Western Ontario
Publications - 29
Citations - 1431
Roya Etemad-Rezai is an academic researcher from University of Western Ontario. The author has contributed to research in topics: Magnetic resonance imaging & Spirometry. The author has an hindex of 17, co-authored 28 publications receiving 1278 citations. Previous affiliations of Roya Etemad-Rezai include Robarts Research Institute & University Health Network.
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Journal ArticleDOI
Hyperpolarized 3He and 129Xe MR imaging in healthy volunteers and patients with chronic obstructive pulmonary disease.
Miranda Kirby,Sarah Svenningsen,Amir Owrangi,Andrew Wheatley,Adam Farag,Alexei Ouriadov,Giles E. Santyr,Roya Etemad-Rezai,Harvey O. Coxson,David G. McCormack,Grace Parraga +10 more
TL;DR: In patients with COPD, the VDP obtained with hyperpolarized 29Xe MR imaging was significantly greater than that with 3He MR imaging, suggesting incomplete or delayed filling of lung regions that may be related to the different properties of 129Xe gas and physiologic and/or anatomic abnormalities in COPD.
Journal ArticleDOI
Hyperpolarized 3He magnetic resonance functional imaging semiautomated segmentation.
Miranda Kirby,Miranda Kirby,Mohammadreza Heydarian,Sarah Svenningsen,Sarah Svenningsen,Andrew Wheatley,David G. McCormack,Roya Etemad-Rezai,Grace Parraga +8 more
TL;DR: Semiautomated segmentation (3)He MRI provides excellent inter- and intraobserver precision with high spatial and quantitative agreement with manual measurements enabling its use in longitudinal studies.
Journal ArticleDOI
Hyperpolarized 3He ventilation defects and apparent diffusion coefficients in chronic obstructive pulmonary disease: preliminary results at 3.0 Tesla
Grace Parraga,Alexei Ouriadov,Andrea Evans,Shayna McKay,Wilfred W. Lam,Aaron Fenster,Roya Etemad-Rezai,David G. McCormack,Giles E. Santyr +8 more
TL;DR: ADC values for emphysematous lungs were significantly increased compared with healthy lungs in age-matched subjects, and all values were comparable to those reported previously at 1.5 Tesla.
Journal ArticleDOI
Detection of Local Cancer Recurrence After Stereotactic Ablative Radiation Therapy for Lung Cancer: Physician Performance Versus Radiomic Assessment.
Sarah A. Mattonen,David A. Palma,Carol Johnson,Alexander V. Louie,Mark Landis,George Rodrigues,Ian Chan,Roya Etemad-Rezai,Timothy Pok Chi Yeung,Suresh Senan,Aaron D. Ward +10 more
TL;DR: It is suggested that radiomics can detect early changes associated with local recurrence that are not typically considered by physicians and could potentially allow for early salvage therapy of patients with local Recurrence after SABR.
Journal ArticleDOI
Hyperpolarized 3He magnetic resonance imaging of chronic obstructive pulmonary disease: reproducibility at 3.0 tesla.
Lindsay Mathew,Andrea Evans,Andrea Evans,Alexei Ouriadov,Roya Etemad-Rezai,Robert B. Fogel,Giles E. Santyr,Giles E. Santyr,David G. McCormack,Grace Parraga,Grace Parraga +10 more
TL;DR: Hyperpolarized magnetic resonance imaging was well-tolerated in subjects with stage II and stage III COPD and seven-day repeated scanning was highly reproducible for ADC and moderately Reproducible for VDV.