RELIABILITY OF DRAWING REGIONS OF INTEREST FOR POSITRON EMISSION TOMOGRAPHIC DATA

被引：23

作者：

SMALL, GW

STERN, CE

MANDELKERN, MA

FAIRBANKS, LA

MIN, CA

GUZE, BH

机构：

[1] MASSACHUSETTS GEN HOSP,BOSTON,MA 02114

[2] HARVARD UNIV,SCH MED,BOSTON,MA 02115

[3] VET AFFAIRS MED CTR,PET FACIL,LOS ANGELES,CA

来源：

PSYCHIATRY RESEARCH-NEUROIMAGING | 1992年 / 45卷 / 03期

关键词：

INTERRATER RELIABILITY; CEREBRAL GLUCOSE METABOLIC RATE; FLUORODEOXYGLUCOSE;

D O I：

10.1016/0925-4927(92)90025-Y

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

We determined interrater reliability for two raters who independently used a standard protocol to draw regions of interest (ROIs) on F-18 fluorodeoxyglucose positron emission tomographic data acquired from eight patients with mild to moderate memory impairment. Intraclass correlation coefficients for region sizes (total pixel number) varied among anatomical ROIs (R(I)s from 0.324 to 0.935). However, correlations calculated from relative metabolic rates (normalized average counts) were consistently high (R(I) greater-than-or-equal-to 0.954). The raters also showed high agreement for region recognition on each image plane (kappa = 0.978). These results suggest that rater disagreements in ROI margins have minimal impact on average count densities used to calculate metabolic rates.

引用

页码：177 / 185

页数：9

共 16 条

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