HEAD MOTION DURING POSITRON EMISSION TOMOGRAPHY - IS IT SIGNIFICANT

被引：31

作者：

RUTTIMANN, UE

ANDREASON, PJ

RIO, D

机构：

[1] Laboratory of Clinical Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892-1256

来源：

PSYCHIATRY RESEARCH-NEUROIMAGING | 1995年 / 61卷 / 01期

关键词：

FUNCTIONAL IMAGING; PET METHODOLOGY; FACE MASK RESTRAINT; CEREBRAL GLUCOSE UTILIZATION;

D O I：

10.1016/0925-4927(95)02565-F

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

High sensitivity for detecting local brain function differences from subsequent PET-images acquired at different cerebral stimulation states requires interscan head motion to be minimized. This motion was measured by an optical lever system during scanning (130 min) of 15 subjects in a dual-dose injection study. Despite motion restriction by a face-mask restraint system, rotations in the sagittal and coronal planes (up to 4.1 degrees and 2.4 degrees, respectively) significantly influenced the measured means and variances of local metabolic differences between states. Hence, adjustments for head movement by retrospective, digital slice realignment or, better, real-time corrections are important.

引用

页码：43 / 51

页数：9

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