scholarly journals Evolving focal cerebral ischemia in cats: spatial correlation of nuclear magnetic resonance imaging, cerebral blood flow, tetrazolium staining, and histopathology.

Stroke ◽  
1988 ◽  
Vol 19 (1) ◽  
pp. 28-37 ◽  
Author(s):  
B Bose ◽  
S C Jones ◽  
R Lorig ◽  
H T Friel ◽  
M Weinstein ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Nuclear Magnetic Resonance ◽  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Cerebral Ischemia ◽  
Magnetic Resonance ◽  
Spatial Correlation ◽  
Focal Cerebral Ischemia ◽  
Resonance Imaging ◽  
Tetrazolium Staining

scholarly journals Improved brain perfusion after electrical cardioversion of atrial fibrillation

EP Europace ◽  
2019 ◽  
Vol 22 (4) ◽  
pp. 530-537 ◽  
Author(s):  
Marianna Gardarsdottir ◽  
Sigurdur Sigurdsson ◽  
Thor Aspelund ◽  
Valdis Anna Gardarsdottir ◽  
Lars Forsberg ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Atrial Fibrillation ◽  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Magnetic Resonance ◽  
Brain Perfusion ◽  
Resonance Imaging ◽  
Flow Measurements ◽  
Before And After ◽  
Blood Flow Measurements

Abstract Aims Atrial fibrillation (AF) has been associated with reduced brain volume, cognitive impairment, and reduced cerebral blood flow. The causes of reduced cerebral blood flow in AF are unknown, but no reduction was seen in individuals without the arrhythmia in a previous study. The aim of this study was to test the hypothesis that brain perfusion, measured with magnetic resonance imaging (MRI), improves after cardioversion of AF to sinus rhythm (SR). Methods and results All patients undergoing elective cardioversion at our institution were invited to participate. A total of 44 individuals were included. Magnetic resonance imaging studies were done before and after cardioversion with both brain perfusion and cerebral blood flow measurements. However, 17 did not complete the second MRI as they had a recurrence of AF during the observation period (recurrent AF group), leaving 17 in the SR group and 10 in the AF group to complete both measurements. Brain perfusion increased after cardioversion to SR by 4.9 mL/100 g/min in the whole brain (P < 0.001) and by 5.6 mL/100 g/min in grey matter (P < 0.001). Cerebral blood flow increased by 58.6 mL/min (P < 0.05). Both brain perfusion and cerebral blood flow remained unchanged when cardioversion was unsuccessful. Conclusion In this study of individuals undergoing elective cardioversion for AF, restoration, and maintenance of SR for at least 10 weeks after was associated with an improvement of brain perfusion and cerebral blood flow measured by both arterial spin labelling and phase contrast MRI. In those individuals where cardioversion was unsuccessful, there was no change in perfusion or blood flow.

scholarly journals Cerebral Blood Flow and Blood Volume Measured by Magnetic Resonance Imaging Bolus Tracking After Acute Stroke in Pigs

Stroke ◽  
2000 ◽  
Vol 31 (8) ◽  
pp. 1958-1964 ◽  
Author(s):  
Masaharu Sakoh ◽  
Lisbeth Røhl ◽  
Carsten Gyldensted ◽  
Albert Gjedde ◽  
Leif Østergaard
Keyword(s):  
Magnetic Resonance Imaging ◽  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Magnetic Resonance ◽  
Acute Stroke ◽  
Blood Volume ◽  
Resonance Imaging ◽  
Bolus Tracking
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