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 Fukuda, T. Articles by Ogawa, A. Search for Related Content PubMed PubMed Citation Articles by Fukuda, T. Articles by Ogawa, A.

Prediction of Cerebral Hyperperfusion after Carotid Endarterectomy Using Cerebral Blood Volume Measured by Perfusion-Weighted MR Imaging Compared with Single-Photon Emission CT

T. Fukuda^a, K. Ogasawara^a, M. Kobayashi^a, N. Komoribayashi^a, H. Endo^a, T. Inoue^a, Y. Kuzu^a, H. Nishimoto^a, K. Terasaki^a and A. Ogawa^a

^a From the Department of Neurosurgery and Cyclotron Research Center, Iwate Medical University, Morioka, Japan

View larger version (85K): [in this window] [in a new window]   Fig 1. Regions of interest in MCA territory selected from PW MR images (A) and SPECT (B) images.

View larger version (14K): [in this window] [in a new window]   Fig 2. Correlation between preoperative CBV and the increase in CBF immediately after CEA. Curved line indicates square function of the best fit. Open circle indicates patients without post-CEA hyperperfusion. Closed circle indicates patients with post-CEA hyperperfusion. The arrows indicate the patients who developed hyperperfusion syndrome. The horizontal dashed line indicates CBF increase of 100% (the definition of hyperperfusion). The vertical dashed line indicates the mean + 2 SD for CBV defined in healthy subjects.

View larger version (12K): [in this window] [in a new window]   Fig 3. Relationship between preoperative CBV, preoperative CBV ratio, and post-CEA hyperperfusion. All 7 patients with post-CEA hyperperfusion are located in the quadrant with elevated CBV and an elevated CBV ratio. Open circle indicates patients without post-CEA hyperperfusion. Closed circle indicates patients with post-CEA hyperperfusion. Arrows indicate patients who developed hyperperfusion syndrome. Horizontal dashed line indicates the mean + 2 SD for CBV ratio defined in healthy subjects. Vertical dashed line indicates the mean + 2 SD for CBV defined in healthy subjects.

View larger version (49K): [in this window] [in a new window]   Fig 4. A 66-year-old man with symptomatic right internal carotid artery stenosis (85%) exhibiting hyperperfusion syndrome after CEA. Preoperative PWI and SPECT images show elevation in CBV (A) and a decrease in CBF (B), respectively, in the right cerebral hemisphere where hyperperfusion is observed on SPECT immediately after CEA (C). This patient developed confusion and left motor weakness 5 days after surgery.