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Journal of Ultrasound in Medicine, Vol 20, Issue 1 35-41, Copyright © 2001 by American Institute of Ultrasound in Medicine

JOURNAL ARTICLE

Ultrasonographic evaluation of the gallbladder: comparison of fundamental, tissue harmonic, and pulse inversion harmonic imaging

H. S. Hong, J. K. Han, T. K. Kim, Y. H. Kim, J. S. Kim, J. H. Cha and B. I. Choi
Department of Radiology, Seoul National University College of Medicine, and Clinical Research Institute, Seoul National University Hospital, Chongno-gu, Korea.

The purpose of our study was to compare pulse inversion harmonic imaging, tissue harmonic imaging, and fundamental imaging in the evaluation of normal and diseased gallbladder. Gallbladders in 170 patients were examined with fundamental imaging, tissue harmonic imaging, and pulse inversion harmonic imaging using a 2- to 5-MHz curved array transducer. Images were divided into normal and abnormal groups. The sharpness of the wall and degree of internal artifact were evaluated in normal groups, and lesion conspicuity and internal artifact were evaluated in abnormal groups. In images of both normal and abnormal gallbladder, significant differences were demonstrated among the 3 imaging methods (P < .001), and pulse inversion harmonic imaging provided the best image quality and the least artifact. Tissue harmonic imaging was the next best, providing better image quality and less artifact than fundamental imaging. In conclusion, pulse inversion harmonic imaging provided the best image quality and the least artifact among the 3 ultrasonographic methods in the evaluation of both normal and abnormal gallbladder.


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