Joseph A. Fisher - Publications, H-index & Citations

Joseph A. Fisher

university of toronto

54H指数

361论文数

9.7K被引数

收录论文 112

发表时间

Persistent Steal Physiology during a Ramp Cerebrovascular Reactivity Assessment Correlates with Severe Cortical Thinning in Steno-Occlusive Disease 在递增式脑血管反应性评估期间持续存在的盗血生理现象与狭窄闭塞性疾病中的严重皮层变薄相关

American Journal of Neuroradiology

IF3.7

2026-04-01

PREAI

Shi, Runjie Bill; Poublanc, Julien; Sayin, Ece Su; Sobczyk, Olivia; Fisher, Joseph A.; Mikulis, David J.; Para, Andrea E.

Quantifying Myocardial Perfusion without Exogenous Contrast Agents Through Arterial Oxygen Tension Modulation 通过动脉氧分压调控定量心肌灌注，无需外源性造影剂

Journal of Cardiovascular Magnetic Resonance

IF6.1

2026-01-28

OAAI

Yuheng Huang; Hsin-Jung Yang; Xinheng Zhang; Benjamin Wilk; Rafay Khan; Tameshwar Ganesh; Olivia Sobczyk; Jane Sykes; Heather Biernaski; Frank Prato; Joseph Fisher; Rohan Dharmakumar

Cerebrovascular reactivity differences in healthy cerebral gray and white matter 脑灰质和白质脑血管反应性差异

MAGNETIC RESONANCE IN MEDICINE

IF3

2025-04-06

OAAI

Levine, Harrison T.; Poublanc, Julien; Sayin, Ece Su; Duffin, James; Sobczyk, Olivia; Fisher, Joseph A.; Mikulis, David J.

A NOVEL APPROACH TO PERFUSION MRI STUDIES IN BRAIN TUMOR PATIENTS USING ENDOGENOUS DEOXYHEMOGLOBIN AS A CONTRAST AGENT: A PROOF-OF-CONCEPT STUDY

NEURO-ONCOLOGY

IF13.4

2024-11-11

PREAI

Stumpo, Vittorio; Sayin, Ece Su; Bellomo, Jacopo; Sobczyk, Oliva; van Niftrik, Christiaan Hendrik Bas; Sebok, Martina; Weller, Michael; Regli, Luca; Kulcsar, Zsolt; Pangalu, Athina; Bink, Andrea; Duffin, James; Mikulis, David D.; Fisher, Joseph A.; Fierstra, Jorn

Cerebral perfusion metrics calculated directly from a hypoxia-induced step change in deoxyhemoglobin

SCIENTIFIC REPORTS

IF3.9

2024-07-25

OAAI

Duffin, James; Sayin, Ece Su; Sobczyk, Olivia; Poublanc, Julien; Mikulis, David J.; Fisher, Joseph A.

Transient deoxyhemoglobin formation as a contrast for perfusion MRI studies in patients with brain tumors: a feasibility study

FRONTIERS IN PHYSIOLOGY

IF3.4

2024-04-25

OAAI

Stumpo, Vittorio; Sayin, Ece Su; Bellomo, Jacopo; Sobczyk, Olivia; van Niftrik, Christiaan Hendrik Bas; Sebok, Martina; Weller, Michael; Regli, Luca; Kulcsar, Zsolt; Pangalu, Athina; Bink, Andrea; Duffin, James; Mikulis, David D.; Fisher, Joseph A.; Fierstra, Jorn

Increased Risk of Recurrent Stroke in Symptomatic Large Vessel Disease With Impaired BOLD Cerebrovascular Reactivity

STROKE

IF8.9

2024-03-01

PREAI

van Niftrik, Christiaan H. B.; Sebok, Martina; Germans, Menno R.; Halter, Matthias; Pokorny, Thomas; Stumpo, Vittorio; Bellomo, Jacopo; Piccirelli, Marco; Pangalu, Athina; Katan, Mira; Wegener, Susanne; Tymianski, Michael; Kulcsar, Zsolt; Luft, Andreas R.; Fisher, Joseph A.; Mikulis, David J.; Regli, Luca; Fierstra, Jorn

The Choroid Plexus as an Alternative Locus for the Identification of the Arterial Input Function for Calculating Cerebral Perfusion Metrics Using MRI

AMERICAN JOURNAL OF NEURORADIOLOGY

IF3.7

2023-12-28

OAAI

Sobczyk, Olivia; Sayin, Ece Su; Poublanc, Julien; Duffin, James; Para, Andrea; Fisher, Joseph A.; Mikulis, David J.

Assessment of Cerebrovascular Reactivity Using CO2-BOLD MRI: A 15-Year, Single Center Experience 使用CO2-BOLD MRI评估脑血管反应性: 15年的单中心经验

JOURNAL OF MAGNETIC RESONANCE IMAGING

IF3.5

2023-12-22

OAAI

Raghavan, Vishvak; Sobczyk, Olivia; Sayin, Ece Su; Poublanc, Julien; Skanda, Abby; Duffin, James; Venkatraghavan, Lashmi; Fisher, Joseph A.; Mikulis, David J.

Assessing Perfusion in Steno-Occlusive Cerebrovascular Disease Using Transient Hypoxia-Induced Deoxyhemoglobin as a Dynamic Susceptibility Contrast Agent

AMERICAN JOURNAL OF NEURORADIOLOGY

IF3.7

2023-12-21

OAAI

Sayin, Ece Su; Duffin, James; Stumpo, Vittorio; Bellomo, Jacopo; Piccirelli, Marco; Poublanc, Julien; Wijeya, Vepeson; Para, Andrea; Pangalu, Athina; Bink, Andrea; Nemeth, Bence; Kulcsar, Zsolt; Mikulis, David J.; Fisher, Joseph A.; Sobczyk, Olivia; Fierstra, Jorn

Hemodynamic Failure Staging With Blood Oxygenation Level- Dependent Cerebrovascular Reactivity and Acetazolamide- Challenged (15O-)H2O- Positron Emission Tomography Across Individual Cerebrovascular Territories

JOURNAL OF THE AMERICAN HEART ASSOCIATION

IF5.3

2023-12-19

OAAI

Seboek, Martina; van der Wouden, Frank; Mader, Caecilia; Pangalu, Athina; Treyer, Valerie; Fisher, Joseph Arnold; Mikulis, David John; Huellner, Martin; Regli, Luca; Fierstra, Jorn; van Niftrik, Christiaan Hendrik Bas

Determining the effects of elevated partial pressure of oxygen on hypercapnia-induced cerebrovascular reactivity

JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM

IF4.5

2023-08-26

OAAI

Sayin, Ece Su; Duffin, James; Poublanc, Julien; Venkatraghavan, Lashmikumar; Mikulis, David John; Fisher, Joseph Arnold; Sobczyk, Olivia

Transfer function analysis assesses resting cerebral perfusion metrics using hypoxia-induced deoxyhemoglobin as a contrast agent

FRONTIERS IN PHYSIOLOGY

IF3.4

2023-05-03

OAAI

Sayin, Ece Su; Sobczyk, Olivia; Poublanc, Julien; Mikulis, David J.; Fisher, Joseph A.; Duffin, James

Investigations of hypoxia-induced deoxyhemoglobin as a contrast agent for cerebral perfusion imaging

HUMAN BRAIN MAPPING

IF3.3

2022-10-29

OAAI

Sayin, Ece Su; Schulman, Jacob; Poublanc, Julien; Levine, Harrison T.; Raghavan, Lakshmikumar Venkat; Uludag, Kamil; Duffin, James; Fisher, Joseph A.; Mikulis, David J.; Sobczyk, Olivia

Sickle cell cerebrovascular reactivity to a CO2 stimulus: Too little, too slow

FRONTIERS IN PHYSIOLOGY

IF3.4

2022-08-19

OAAI

Forte, Stephanie; Sobczyk, Olivia; Poublanc, Julien; Duffin, James; Hare, Gregory M. T.; Fisher, Joseph Arnold; Mikulis, David; Kuo, Kevin H. M.

Assessing Cerebrovascular Resistance in Patients With Sickle Cell Disease

FRONTIERS IN PHYSIOLOGY

IF3.4

2022-03-29

OAAI

Sayin, Ece Su; Sobczyk, Olivia; Poublanc, Julien; Mikulis, David J.; Fisher, Joseph A.; Kuo, Kevin H. M.; Duffin, James

Effect of a neck collar on brain turgor: a potential role in preventing concussions?

BRITISH JOURNAL OF SPORTS MEDICINE

IF16.2

2021-11-25

OAAI

Dinsmore, Michael; Hajat, Zakir; Brenna, Connor T. A.; Fisher, Joseph; Venkatraghavan, Lashmi

Perfusion MRI using endogenous deoxyhemoglobin as a contrast agent: Preliminary data

MAGNETIC RESONANCE IN MEDICINE

IF3

2021-10-22

OAAI

Poublanc, Julien; Sobczyk, Olivia; Shafi, Reema; Sayin, Ece Su; Schulman, Jacob; Duffin, James; Uludag, Kamil; Wood, John C.; Vu, Chau; Dharmakumar, Rohan; Fisher, Joseph A.; Mikulis, David J.

Measuring Cerebrovascular Reactivity: Sixteen Avoidable Pitfalls

FRONTIERS IN PHYSIOLOGY

IF3.4

2021-07-07

OAAI

Sobczyk, Olivia; Fierstra, Jorn; Venkatraghavan, Lakshmikumar; Poublanc, Julien; Duffin, James; Fisher, Joseph A.; Mikulis, David J.

Normal BOLD Response to a Step CO2 Stimulus After Correction for Partial Volume Averaging

FRONTIERS IN PHYSIOLOGY

IF3.4

2021-06-14

OAAI

Poublanc, Julien; Shafi, Reema; Sobczyk, Olivia; Sam, Kevin; Mandell, Daniel M.; Venkatraghavan, Lakshmikumar; Duffin, James; Fisher, Joseph A.; Mikulis, David J.

研究方向