[2] Lafrance Denis, Lands Larry C, Burns David H. Talanta, 2003, 60(4): 635.

[3] Rosen Noah A, Charash William E, Hirsch Erwin F. Journal of Surgical Research, 2002, 106(2): 282.

[5] Delpy D T, Cope M, Zee V D, et al. Phys. Med. Bio., 1988, 33(10): 1433.

[6] Wang Yan, Li Gang, Lin Ling, et al. J. Phys.: Conf. Ser., 2005, 13: 284.

[7] Li Qingbo, Wang Yan, Xu Kexin. Proceedings of SPIE, 2002, 4916: 265.