Effects of scatter correction on regional distribution of cerebral blood flow using I-123-IMP and SPECT

1999 ◽  
Vol 13 (5) ◽  
pp. 331-336 ◽  
Author(s):  
Hiroshi Ito ◽  
Hidehiro Iida ◽  
Toshibumi Kinoshita ◽  
Jun Hatazawa ◽  
Toshio Okudera ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Scatter Correction ◽  
Regional Distribution

REGIONAL DISTRIBUTION OF CEREBRAL BLOOD FLOW WITH HALOTHANE AND ISOFLURANE

1987 ◽  
Vol 67 (3) ◽  
pp. A574-A574 ◽  
Author(s):  
T D Hanson ◽  
D S Warner ◽  
L H Vust ◽  
M M Todd
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Regional Distribution

scholarly journals Regional Cerebral Blood Flow in Patients with Aneurysms: Estimation by Xenon 133 Inhalation

1978 ◽  
Vol 5 (3) ◽  
pp. 301-305 ◽  
Author(s):  
Bryce Weir ◽  
Devidas Menon ◽  
Thomas Overton
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Regional Cerebral Blood Flow ◽  
Normal Values ◽  
Regional Distribution ◽  
Progressive Increase ◽  
Control Group ◽  
Regional Cerebral Blood ◽  
Progressive Reduction ◽  
Distribution Of Flow

SUMMARY:Seventy six regional cerebral blood flow (rCBF) studies were conducted on 32 patients who had a total of 39 aneurysms. Twenty three of these patients were studied pre- and post-operatively. Normal values were obtained from a control group of 33 subjects, each of whom underwent one rCBF study. Flow was reduced following subarachnoid hemorrhage (SAH); it increased significantly postoperatively. Lower flows were associated with poorer clinical grades. There was a greater variation in regional distribution of flow immediately following SAH than in normals or in patients who had recovered from the acute phase. rCBF studies correlated with CT scans demonstrated that a progressive increase in ventricular size was accompanied by a progressive reduction in flow. In addition, intraventricular hemorrhage (IVH) was associated with a significant reduction in cerebral blood flow (CBF). No significant correlation between CBF and spasm was demonstrable.

Regional distribution of cerebral blood volume and cerebral blood flow in newborn piglets—effect of hypoxia/hypercapnia

1999 ◽  
Vol 112 (1) ◽  
pp. 89-98 ◽  
Author(s):  
Reinhard Bauer ◽  
Ralf Bergmann ◽  
Bernd Walter ◽  
Peter Brust ◽  
Ullrich Zwiener ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Blood Volume ◽  
Cerebral Blood Volume ◽  
Regional Distribution ◽  
Newborn Piglets

Regional distribution of cerebral blood flow during exercise in dogs

1980 ◽  
Vol 48 (2) ◽  
pp. 213-217 ◽  
Author(s):  
P. M. Gross ◽  
M. L. Marcus ◽  
D. D. Heistad
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Regional Distribution ◽  
Moderate Intensity ◽  
Regional Cerebral Blood ◽  
Arterial Pco2 ◽  
Regional Flow ◽  
Arterial Blood ◽  
The Brain ◽  
Cerebral Vascular Resistance

This study was performed to determine whether exercise produces vasodilatation in regions of the brain that are associated with motor functions despite the associated vasoconstrictor effect of hypocapnia. Total and regional cerebral blood flow (CBF) were measured with microspheres in dogs during treadmill exercise of moderate intensity. Flow was also measured at rest after stimulation of ventilation with doxapram. During moderate exercise, total CBF was not changed significantly, but regional flow was increased in structures associated with motor-sensory control; blood flow to motor-sensory cortex, neocerebellar and paleocerebellar cortex, and spinal cord increased 30 +/- 7%, 39 +/- 8%, and 29 +/- 4%, respectively (P less than 0.05). After doxapram, which increased arterial blood pressure and decreased arterial PCO2 to levels similar to those during exercise, total CBF decreased and there was no redistribution of CBF. These results indicate that exercise in conscious dogs increases blood flow in regions of the brain associated with movement despite the associated vasoconstrictor stimulus of arterial hypocapnia. Thus, during exercise, local dilator influences that presumably result from increases in metabolism predominate over a potent constrictor stimulus in regulation of cerebral vascular resistance.

Dual-window scatter correction and energy window setting in cerebral blood flow SPECT: a Monte Carlo study

2000 ◽  
Vol 45 (11) ◽  
pp. 3431-3440 ◽  
Author(s):  
Agnetha Gustafsson ◽  
Åsa Ärlig ◽  
Lars Jacobsson ◽  
Michael Ljungberg ◽  
Carsten Wikkelsö
Keyword(s):  
Blood Flow ◽  
Monte Carlo ◽  
Cerebral Blood Flow ◽  
Scatter Correction ◽  
Monte Carlo Study ◽  
Energy Window ◽  
Dual Window
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