Pfefferbaum et al. (in a paper entitled “In vivo spectroscopic quantification of the N-acetyl moiety, creatine, and choline from large volumes of brain gray and white matter: Effects of normal aging” published in Magn. Res. in Med. 41:276-284, 1999. |
Lim, et al. in a paper entitled “Estimating NAA in Cortical Gray Matter with Applications for Measuring Changes due to Aging” published in MRM 37:372-377 1997. |
Pfefferbaum et al. also (in another paper entitled “In vivo brain concentrations of N-acetyl compunds, creatine, and choline in Alzheimer's disease” published in Arch. Gen. Psychiatry 56:185-192, 1999. |
Adalsteinsson et al. in a paper entitled “Three-dimensional spectroscopic imaging with time-varying gradients” and published in Magn. Res. Med. 33:461-466, 1995. |
Spielman et al. in a paper entitled “Lipid-suppressed single- and multisection proton spectroscopic imaging of the human brain” and published in J. Magn. Res. Imaging 2:253-262, 1992. |
Soher et al. in a paper entitled Quantitative proton MR spectroscopic imaging of the human brain and published in Magn. Res. Med. 35:356-363, 1996. |
Webb et al. in a paper entitled “Rapid, Fully, Automatic, Arbitrary-Volume in Vivo Shimming” and published in Magn. Res. in Med. 20:113-122 1991. |
Spielman et al., in a paper entitled “Quantitiative assessment of improve homogeneity using higher-order shims for spectroscopic imaging of the brain” and published in Magn. Res. in Med. 40:376-382, 1998. |
Gudbjartsson et al. in a paper entitled “The Rician distribution of noisy MRI data” and published in Magn. Res. Med. 34:910-914, 1995. |
Lim et al. in a paper entitled “Segmentation of MRI images into cerobrospinal fluid spaces, white and gray matter” and published in J. Comput. Assit. Tomogr. 13:588-593, 1989. |
Kittler et al. in a paper entitled “Minimum error thresholding” and published in Pattern Recognition, 19:41-47, 1986. |
Otsu et al. in a paper entitled “A threshold selection method from gray-level histograms” and published in IEEE Trans. Systems Man and Cybernetics 9:62-66, 1979. |
Golub et al. in a paper entitled “The differentiation of pseudo-inverses and nonlinear least squares problems whose variables separate” and published in SIAM J. Num. Anal, 10:413-432, 1973. |