リング型SPECT装置を用いた^<133>Xeガス吸入法による脳血流測定法の基礎的検討

概要

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A fundamental study on the regional CBF measurement using the ^<133>Xe inhalation method with a ring-type SPECT camera was carried out. In this study, five normal subjects were used. The data analysis of filtering and the data of the acquisition time were examined. The spatial resolution was improved when the Butterworth filter was set at 8 and the cut off factor was increased. However, the resolution was decreased, when cut off factor was set at 80 and filter order was increased. Regional CBF was increased with an increase in spatial resolution. When the data acquisition time was analyzed at 4, 6, 8, 10 min, respectivery, the highest value for rCBF was obtained at 4 min, and the lowest, at 10 min. We, therefore conclude that rCBF measurements using SPECT should always be performed under the same conditions every day, because the values of rCBF depended on the spatial resolution and data acquisition time.
社団法人日本放射線技術学会の論文
1995-04-01