Effect of prolonged acquisition intervals for CT-perfusion analysis methods in patients with ischemic stroke.

ABSTRACT:

Introduction

The limited axial coverage of many computed tomography (CT) scanners poses a high risk on false negative findings in cerebral CT-perfusion (CTP) imaging. Axial coverage may be increased by moving the table back and forth during image acquisition. However, this method often increases the acquisition interval between CT frames, which may influence the CTP analysis. In this study, we evaluated the influence of different acquisition intervals on quantitative perfusion maps and infarct volumes by analyzing patient data with three CTP analysis methods.

Methods

CT-perfusion data from 25 patients with ischemic stroke were used for this study. The acquisition interval was synthetically reduced from 1 to 5 s before calculating perfusion values, which included cerebral blo

SUBMITTER: van Ommen F 

PROVIDER: S-EPMC6851872 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature