1Ophir J,Cespedes I,Ponnekanti H,et al.Elastography:a quantitative method for imaging the elasticity of biological tissues.Ultrason Imaging,1991,13:111-134.
2Kallel F,Ophir J,Magee K,et al.Elastographic imaging of lowcontrast elastic modulus distributions in tissue.Ultrasound Med Biol,1998,24:409-425.
3Garra BS,Cespedes EI,Ophir J,et al.Elastography of breast lesions:initial clinical results.Radiology,1997,202:79-86.
4Sandrin L,Fourquet B,Hasquenoph JM,et al.Transient elastography:a new noninvasive method for assessment of hepatic fibrosis.Ultrasound Med Biol,2003,29:1705-1713.
5Svensson WE.The value of ultrasound scanning in breast disease.Hosp Med,2000,61:233-239.
6Kenjiro Y.Possibility of the development and clinical use of a capsule ultrasound endoscope.Dig Endosc,2004,16 (suppl):251-252.
7Goldberg SN,Mallery S,Gazelle GS,et al.EUS-guided radiofrequency ablation in the pancreas:results in a porcine model.Gastrointest Endosc,1999,50:392-400.
8Chang KJ,Nguyen PT,Thompson JA,et al.Phase Ⅰ clinical trial of local immunotherapy (cytoimplant) delivered by endoscopic ultrasound-guided fine needle injection in patients with advanced pancreatic carcinoma.Gastrointest Endosc,1998,47:144.
9Joyce F,Burcharth F,Holm HH,et al.Ultrasonically guided percutaneous implantation of iodine-125 seeds in pancreatic carcinoma.Int J Radiat Oncol Biol Phys,1990,19:1049-1052.
10Pearson AS,Bouvet M,Evans DB,et al.Gene therapy and pancreatic cancer.Front Biosci,1998,3:230-237.
