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The Use of Hyperventilation in Contrast-Enhanced MR of Brain Tumors AJNR 18:1705-1708, Pronin,I.N.,et al, 1997 See this aricle in Pubmed Article Abstract After hyperventilation,six low grade astrocytomas showed no change and three showed a small decrease in relative enhancement.The ependymomas showed a 10%to 13%increase in the degree of enhancement,but no change in the area of enhancement.All the anaplastic astrocytomas showed an increase in the degree of enhancement(mean,38%).Three of the anaplastic astrocytomas showed new foci of enhancement that were not seen on the nonhyperventilation study.Hyperventilation appears to be an inexpensive and safe method for increasing the conspicuity of abnormal areas of the blood-brain barrier.

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(click to filter results - removes previous filter) astrocytoma ependymoma gadolinium hyperventilation MRI MRI,abnormal MRI,brain tumors MRI,contrast enhanced neoplasm,primary of CNS

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