The Chinese ring: A contraceptive intrauterine device

Taylor L. MacDonald, Eugenio O Gerscovich, John P McGahan, Maria Fogata

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


The stainless steel ring (SSR; Figure 1) is a commonly used Chinese intrauterine device (IUD) that has a typical appearance when shown on sonography. Considering the large number of Chinese immigrants coming to the United States and the 2.7 million Chinese-born immigrants currently living here, it is not surprising that many family practitioners, obstetricians, sonographers, and sonologists will see the SSR at some point in their careers. General knowledge about the effectiveness, risks, and sonographic appearance of the SSR is important for physicians who may encounter this particular IUD in their practices. To the best of our knowledge, no previous reports of the sonographic appearance of the SSR have been reported in the English language imaging literature.

Original languageEnglish (US)
Pages (from-to)273-275
Number of pages3
JournalJournal of Ultrasound in Medicine
Issue number2
StatePublished - Feb 2006

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology
  • Acoustics and Ultrasonics


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