1Hatabu H, Kasagi K, Yamamoto K,et al. Cystic papillary carcinoma of the thyroid gland: A new sonographic sign. Clinical Radiology,1991,43:121-124.
2Ulrich J,Petereit S,Gollnick H.Preoperative sonographic diagnosis of melanoma: comparison of 7.5- and 20- MHz sonography.Ultraschall Med,1999,20:197-200.
3Cleverley JR,Jackson AR,Baterman AC.Pre-operative localization of breast microcalcification using high frequency ultrasound.Clin Radiol,1997,52:924-926.
4Hoffmann K,Dirschka T,Schwarze H,et al.20 MHz sonography,colorimetry and image analysis in the evaluation of psoriasis vulgaris. J Dermatol Sci,1995,9:103-110.
5Hoffmann K,Happe M,Schuller S,et al.Ranking of 20 MHz sonography malignant melanoma and pigmented lesions in routine diagnosis.Ultraschall Med,1999,20:104-109.
7Rago T,Vitti P,Chiovato L,et al.Role of conventional ultrasonography and color flow Doppler sonography in predicting malignancy in“cold”thyroid nodules[J].Eur J Endocrinol,1998,138(1):41-46.
8Takashima S,Fukuda H,Nomura N,et al.Thyroid nodules:re-evaluation with ultrasound[J].J Clin Ultrasound,1995,23(3):179-184.
