SPECT evaluation of cerebral blood flow during arm exercise in patients with subclavian steal

Abstract

Our results suggest that subclavian steal is a benign condition in asymptomatic patients. On the other hand, arm exercise-induced rCBF reduction can occur in the cerebrum and cerebellum in patients with VBI symptoms possibly related to low CVR.

Three-dimensional stereotactic ROI template for measuring regional cerebral blood flow in 99mTc-ECD SPECT: comparison with the manual tracing method

“…The reproducibility and accuracy of the rCBF values obtained using the 3DSRT method have already been reported [16][17][18][19][20][21]. It is thought to be important to understand the differences in the rCBF values obtained using the 3DSRT method and the manual tracing method before the 3DSRT method is widely used.…”

“…Then, the rCBF value in each segment is automatically measured. A number of studies have already demonstrated the reproducibility and accuracy of the rCBF values obtained using the 3DSRT method [16][17][18][19][20][21].…”

Relationship between cerebral blood flow estimated by transcranial Doppler ultrasound and single-photon emission computed tomography in elderly people with dementia

“…The 3DSRT was performed by a consecutive analyzing process as follows: 1) anatomical standardization using the SPM99 algorithm, 2) analysis using constant 318 ROIs divided into 12 groups (segments) in each hemisphere, 3) calculation of the area-weighted average for each of the respective 24 segments based on the value in each ROI, and 4) display of the results followed by the saving of respective values of the 636 ROIs (both hemispheres) in the CVS file format. These ROIs were categorized into 12 segments in the template (12) (callosomarginal, pericallosal, precentral, central, parietal, angular, temporal, lenticular nucleus, posterior, thalamus, hippocampus, and cerebellum) according to the arterial supply (anterior, middle, posterior, and vertebral cerebral artery territory) (10). In this study, the results are expressed as the mean Ϯ SD of right SPECT-CBF in these segments.…”