1Martionolic C.Color Doppler songraphy of solivary glands.A JR,1994,163:933.
2Aluffi P, Foniok D, Gandini G, et al. Doppler - color ultrasonography in the diagnosis of parotid tumors. Acta Otorhinolaryngol Ttal, 1997, 17 ( 1 ): 52 -57.
3Schick E, Steiner E, Gahleiter A, et al. Differentiation of benign and malignant tumors of the parotid gland : Value of pulsed Doppler and color Doppler sonography. Eur Radiol, 1998,8 (8): 1 462 - 1 467.
5Klehk,et al.The value of sonagraphy in sali-vary gland Tumors[].HNO.
6Ohyachi N.Vltrasonic study on tissues of pa-rotid tumors measurement of attenuation of ul-trosound within tumor in vivo[].N:ppon Jibinko-ka Gakkai Kaiho.1992