. Author manuscript; available in PMC: 2012 Jul 1.

Published in final edited form as: Magn Reson Med. 2011 Feb 1;66(1):57–66. doi: 10.1002/mrm.22776

Table 4.

Average whole brain CBF, and gray and white matter CBF in the contralateral hemisphere before and after calibration

Contralateral Hemisphere	Measurement (mean±SD)
Contralateral Hemisphere	GM CBF	WM CBF
Uncorrected	54.0 ± 21.7	23.7 ± 10.3
Corrected	64.0 ± 10.0^*^†	28.3 ± 5.8^*^‡

Whole Brain	Measurement (mean±SD)
Whole Brain	tCBF

Uncorrected	587.4 ± 218.0
Corrected	684.2 ± 161.6

Abbreviations and annotations:

WM, white matter, GM, gray matter; CBF,: regional cerebral blood flow (mL/100gm/min); tCBF, total cerebral blood flow (mL/min); SD,: standard deviation;

significant reduction of the sum of squares variance by means of the proposed correction method;

^†

one-sided F-test, p=0.011;

^‡

one-sided F-test, p=0.045; Paired T-test demonstrated no statistically significant difference between the mean CBF measurements in gray (p=0.100) or white matter (p=0.113) before and after correction.