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Progress of endoscopic ultrasonography and intraductal ultrasonography in the diagnosis of malignant biliary diseases
Author(s) -
Kawashima Hiroki,
Hirooka Yoshiki,
Itoh Akihiro,
Hara Kazuo,
Kanamori Akira,
Uchida Hiroki,
Goto Jun,
ogaki Koji,
Matsumoto Yukinari,
Ohmiya Naoki,
Niwa Yasumasa,
Goto Hidemi
Publication year - 2006
Publication title -
journal of hepato‐biliary‐pancreatic surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.63
H-Index - 60
eISSN - 1868-6982
pISSN - 0944-1166
DOI - 10.1007/s00534-005-1060-6
Subject(s) - medicine , radiology , ultrasonography , endoscopic ultrasonography , ultrasound , color doppler , power doppler , second harmonic imaging microscopy , endoscopy , laser , optics , physics , second harmonic generation
In recent years, ultrasound technology has made remarkable strides, and the application of these latest advances to endoscopic ultrasonography (EUS) and intraductal ultrasonography (IDUS) is crucially important. EUS equipped with electronic scanners (both radial and convex types) has been developed, and now EUS with the function of tissue harmonic imaging (THI) and color/power Doppler is applicable clinically. THI facilitates the acquisition of ultrasound images clearer than those of fundamental imaging, and color/power Doppler sonography demonstrates the precise hemodynamics with the use of a contrast agent. In addition, the progress of image processing technology has realized three‐dimensional (3D) images in EUS and IDUS. Reconstruction of 3D images enables us to diagnose more objectively. Here we describe the roles of these new ultrasound technologies in the diagnosis of biliary malignancies.