Noninvasive Evaluation of Collateral Blood Flow through Circle of Willis in Cervical Carotid Stenosis Using Selective Magnetic Resonance Angiography

2014 ◽  
Vol 23 (5) ◽  
pp. 1019-1023 ◽  
Author(s):  
Kenji Ito ◽  
Makoto Sasaki ◽  
Masakazu Kobayashi ◽  
Kuniaki Ogasawara ◽  
Takashi Nishihara ◽  
...  
Keyword(s):  
Blood Flow ◽  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Carotid Stenosis ◽  
Circle Of Willis ◽  
Noninvasive Evaluation ◽  
Collateral Blood Flow ◽  
Flow Through

Combined use of duplex imaging and magnetic resonance angiography for evaluation of patients with symptomatic ipsilateral high-grade carotid stenosis

1993 ◽  
Vol 17 (5) ◽  
pp. 832-840 ◽  
Author(s):  
David S. Sumner ◽  
William D. Turnipseed ◽  
Todd W. Kennell ◽  
Patrick A. Turski ◽  
Charles W. Acher
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Carotid Stenosis ◽  
High Grade ◽  
Duplex Imaging ◽  
Combined Use

Catastrophic cerebral infarction during extracorporeal life support due to a rare anomaly in the circle of Willis

2019 ◽  
Vol 29 (5) ◽  
pp. 816-817 ◽  
Author(s):  
Aiko Sonobe ◽  
Hideyuki Kato ◽  
Bryan J Mathis ◽  
Yuji Hiramatsu
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Carotid Artery ◽  
Cerebral Infarction ◽  
Life Support ◽  
Extracorporeal Life Support ◽  
Circle Of Willis ◽  
Neurological Injury ◽  
The Right

Abstract During extracorporeal life support (ECLS) in infants, cannulation of the right common carotid artery may result in a devastating ischaemic neurological injury. Herein, we present a case of an infant who encountered bilateral cerebral infarction during ECLS via the right carotid artery due to a rare and tragic anomaly of the circle of Willis. The magnetic resonance angiography complemented computed tomography in diagnosing the infarction and identifying this unique anatomy.

Hyperglycemia reduces coronary collateral blood flow through a nitric oxide-mediated mechanism

2001 ◽  
Vol 281 (5) ◽  
pp. H2097-H2104 ◽  
Author(s):  
Judy R. Kersten ◽  
Wolfgang G. Toller ◽  
John P. Tessmer ◽  
Paul S. Pagel ◽  
David C. Warltier
Keyword(s):  
Nitric Oxide ◽  
Blood Flow ◽  
Blood Glucose ◽  
Blood Glucose Concentration ◽  
Collateral Blood Flow ◽  
Coronary Collateral ◽  
Retrograde Blood Flow ◽  
Flow Through ◽  
Blood Glucose Concentrations ◽  
Coronary Collateral Blood Flow

We tested the hypothesis that hyperglycemia alters retrograde coronary collateral blood flow by a nitric oxide-mediated mechanism in a canine Ameriod constrictor model of enhanced collateral development. Administration of 15% dextrose to increase blood glucose concentration to 400 or 600 mg/dl decreased retrograde blood flow through the left anterior descending coronary artery to 78 ± 9 and 82 ± 8% of baseline values, respectively. In contrast, saline or l-arginine (400 mg · kg−1 · h−1) had no effect on retrograde flow. Coronary hypoperfusion and 1 h of reperfusion decreased retrograde blood flow similarly in saline- orl-arginine-treated dogs (76 ± 11 and 89 ± 4% of baseline, respectively), but these decreases were more pronounced in hyperglycemic dogs (47 ± 10%). l-Arginine prevented decreases in retrograde coronary collateral blood flow during hyperglycemia (100 ± 5 and 95 ± 6% of baseline at blood glucose concentrations of 400 and 600 mg/dl, respectively) and after coronary hypoperfusion and reperfusion (84 ± 14%). The results suggest that hyperglycemia decreases retrograde coronary collateral blood flow by adversely affecting nitric oxide availability.

Carotid Endarterectomy after Noninvasive Evaluation by Duplex Ultrasonography and Magnetic Resonance Angiography

Neurosurgery ◽  
1994 ◽  
Vol 34 (4) ◽  
pp. 612-619 ◽  
Author(s):  
Jonathan H. Lustgarten ◽  
Robert A. Solomon ◽  
Donald O. Quest ◽  
Alexander G. Khanjdi ◽  
J. P. Mohr
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Carotid Endarterectomy ◽  
Duplex Ultrasonography ◽  
Noninvasive Evaluation
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