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Ultrasound-guided percutaneous core needle biopsy (USPCB) is used extensively in daily clinical practice for the pathologic confirmation of both focal and diffuse diseases of the abdominal viscera. As a guidance tool, US has a number of clear advantages over computerized tomography or magnetic resonance imaging: fewer false-negative biopsies, lack of ionizing radiation, portability, relatively short procedure time, real-time intra-procedural visualization of the biopsy needle, ability to guide the procedure in almost any anatomic plane, and relatively lower cost. Notably, USPCB is widely used to retrieve tissue specimens in cases of hepatic lesions. However, general radiologists, particularly beginners, find USPCB difficult to perform in abdominal organs other than the liver; indeed, a full understanding of the entire USPCB process and specific considerations for specific abdominal organs is necessary to safely obtain adequate specimens. In this review, we discuss some points and techniques that need to be borne in mind to increase the chances of successful USPCB. We believe that the tips and considerations presented in this review will help radiologists perform USPCB to successfully retrieve target tissue from different organs with minimal complications.
This study intends to analyze the nature of South Korean views of the United States of the 1980s. The main observations can be summed up as follows. In terms of Korean perceptions of the United States, the 1980s was a very special period in the long history of South Korean-U.S. relations. Since the early 1980s, “anti-Americanism” was in the ascendant in earnest among South Korean student activists and dissident intellectuals. In particular, from 1986 on, much of the South Korean anti-American movement began to take the form of anti-Americanism which urged expulsion of “U.S. imperialism.” But this kind of anti-American movement did not represent views of the general South Korean population at the time. By the mid-1980s, a majority of South Koreans still held very favorable views of the United States. In the late 1980s, however, the situation in South Korea began to undergo significant changes. There was a growing tendency in which favorable images of the chief ally weakened. Instead, anti-American sentiment steadily spread among the general populace. With the rapid growth of national pride, South Korean perceptions of the United States increasingly represented an expression of South Korean nationalism.