A comparison of the cerebrovascular responses to CO2 and diamox in patients with unilateral occlusive cerebral arteries: A H215O PET study

Y. Kuwabara, Y. Ichiya, M. Sasaki, Y. Akashi, T. Yoshida, T. Fukumura, K. Masuda

Research output: Contribution to journalArticle

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Abstract

We studied the relationship between the cerebrovascular responses to CO2 and Diamox in patients with chronic cerebrovascular diseases. The subjects consisted of 11 patients with unilateral occlusive or highly stenotic carotid artery. The cerebral blood flow was measured at the resting state, during the inhalation of 5% CO2, at both 5 and 20 min after Diamox i.v. (1 g). The rCBF ratios (occlusive/non-occlusive side) during the inhalation of CO2 and 20 min after Diamox i.v. closely correlated with each other. However, the ratio at 5 min after Diamox i.v. was slightly lower than that during the inhalation of CO2. The percent increases of rCBF also showed a significant correlation between 5% CO2 inhalation and 20 min after Diamox i.v. However, the rCBF decreased inversely at 5 min after Diamox i.v. in some regions on the occlusive side, which indicates the presence of a so-called 'steal phenomenon'. The percent increases in the rCBF after 1 g Diamox i.v. were more or equal to those during the inhalation of 5% CO2. The CO2 and Diamox were thus considered to be equally useful in the evaluation of the perfusion reserve capacity. However, these various characteristics as described above should be considered in the clinical practice.

Original languageEnglish
Pages (from-to)569-574
Number of pages6
JournalKakuigaku
Volume32
Issue number6
Publication statusPublished - Jan 1 1995

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Acetazolamide
Cerebral Arteries
Inhalation
Cerebrovascular Circulation
Cerebrovascular Disorders
Carotid Arteries
Chronic Disease
Perfusion

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

Kuwabara, Y., Ichiya, Y., Sasaki, M., Akashi, Y., Yoshida, T., Fukumura, T., & Masuda, K. (1995). A comparison of the cerebrovascular responses to CO2 and diamox in patients with unilateral occlusive cerebral arteries: A H215O PET study. Kakuigaku, 32(6), 569-574.

A comparison of the cerebrovascular responses to CO2 and diamox in patients with unilateral occlusive cerebral arteries : A H215O PET study. / Kuwabara, Y.; Ichiya, Y.; Sasaki, M.; Akashi, Y.; Yoshida, T.; Fukumura, T.; Masuda, K.

In: Kakuigaku, Vol. 32, No. 6, 01.01.1995, p. 569-574.

Research output: Contribution to journalArticle

Kuwabara, Y, Ichiya, Y, Sasaki, M, Akashi, Y, Yoshida, T, Fukumura, T & Masuda, K 1995, 'A comparison of the cerebrovascular responses to CO2 and diamox in patients with unilateral occlusive cerebral arteries: A H215O PET study', Kakuigaku, vol. 32, no. 6, pp. 569-574.
Kuwabara, Y. ; Ichiya, Y. ; Sasaki, M. ; Akashi, Y. ; Yoshida, T. ; Fukumura, T. ; Masuda, K. / A comparison of the cerebrovascular responses to CO2 and diamox in patients with unilateral occlusive cerebral arteries : A H215O PET study. In: Kakuigaku. 1995 ; Vol. 32, No. 6. pp. 569-574.
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