Advanced

AJNR - American Journal of Neuroradiology

This Article Abstract Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Kamouchi, M. Articles by Iida, M. Search for Related Content PubMed PubMed Citation Articles by Kamouchi, M. Articles by Iida, M.

Poststenotic Flow and Intracranial Hemodynamics in Patients with Carotid Stenosis: Transoral Carotid Ultrasonography Study

Masahiro Kamouchi^a,c, Kazuhiro Kishikawa^a, Yasushi Okada^a, Tooru Inoue^b, Setsuro Ibayashi^c and Mitsuo Iida^c

^a Department of Cerebrovascular Disease, Cerebrovascular Center and Clinical Research Institute, National Kyushu Medical Center
^b Department of Neurosurgery, Cerebrovascular Center and Clinical Research Institute, National Kyushu Medical Center
^c Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Japan

View larger version (13K): [in a new window]   FIG 1. Variables in the poststenotic portion of the ICA plotted against the number of the collateral pathways. Asterisk indicates P < .005 versus patients with no collaterals; section symbol, P < .005 versus patients with one collateral; andnumber sign, P < .005 versus patients with two collaterals. A, Poststenotic diameter. B, Poststenotic blood flow.

View larger version (14K): [in a new window]   FIG 2. Sensitivity-specificity curve. Optimal threshold value of poststenotic blood flow for predicting collateral pathways is 5 mL/s.

View larger version (13K): [in a new window]   FIG 3. Baseline and postacetazolamide asymmetry index in the MCA territory plotted against poststenotic blood flow. Group I indicates patients with flow <5 mL/s; Group II, patients with flow 5 mL/s; asterisk, P < .005; and section symbol, P < .01 versus group II. A, Before acetazolamide. B, After acetazolamide.