{Reference Type}: Journal Article
{Title}: Consensus-based identification of factors related to false-positives in ultrasound scanning of synovitis and tenosynovitis.
{Author}: Ikeda K;Narita A;Ogasawara M;Ohno S;Kawahito Y;Kawakami A;Ito H;Matsushita I;Suzuki T;Misaki K;Ogura T;Kamishima T;Seto Y;Nakahara R;Kaneko A;Nakamura T;Henmi M;Fukae J;Nishida K;Sumida T;Koike T;
{Journal}: Mod Rheumatol
{Volume}: 26
{Issue}: 1
{Year}: 2016
{Factor}: 2.862
{DOI}: 10.3109/14397595.2015.1091123
{Abstract}: <B>BACKGROUND: </B>We aimed to identify causes of false-positives in ultrasound scanning of synovial/tenosynovial/bursal inflammation and provide corresponding imaging examples.<BR><B>METHODS: </B>We first performed systematic literature review to identify previously reported causes of false-positives. We next determined causes of false-positives and corresponding example images for educational material through Delphi exercises and discussion by 15 experts who were an instructor and/or a lecturer in the 2013 advanced course for musculoskeletal ultrasound organized by Japan College of Rheumatology Committee for the Standardization of Musculoskeletal Ultrasonography.<BR><B>RESULTS: </B>Systematic literature review identified 11 articles relevant to sonographic false-positives of synovial/tenosynovial inflammation. Based on these studies, 21 candidate causes of false-positives were identified in the consensus meeting. Of these items, 11 achieved a predefined consensus (≥ 80%) in Delphi exercise and were classified as follows: (I) Gray-scale assessment [(A) non-specific synovial findings and (B) normal anatomical structures which can mimic synovial lesions due to either their low echogenicity or anisotropy]; (II) Doppler assessment [(A) Intra-articular normal vessels and (B) reverberation)]. Twenty-four corresponding examples with 49 still and 23 video images also achieved consensus.<BR><B>CONCLUSIONS: </B>Our study provides a set of representative images that can help sonographers to understand false-positives in ultrasound scanning of synovitis and tenosynovitis.