PURPOSE: We compared intermediate-weighted fast spin-echo (IW-FSE) images with intermediate-weighted fast-recovery FSE (IW-FRFSE) images in the diagnosis of meniscal tears. MATERIALS AND METHODS: First, 64 patients were recruited, and the arthroscopic findings (n = 40) and image analysis (n = 19) identified 59 torn menisci with 36 patients. Both the diagnostic performance and image quality in assessing meniscal tears was evaluated for IW-FSE and IW-FRFSE images using a four-point scale. Signal-to-noise ratio (SNR) calculation was performed for both sets of images. RESULTS: IW-FRFSE image specificity (100 %) for diagnosing the posterior horn of the medial meniscus (MM) tear with reader 1 was significantly higher than that of IW-FSE images (90 %). Mean ratings of the contrast between the lesion and normal signal intensity within the meniscus were significantly higher for the IW-FRFSE image ratings than the IW-FSE images in most meniscal tears. Mean SNRs were significantly higher for IW-FSE images than for IW-FRFSE images (P < 0.05). CONCLUSIONS: IW-FRFSE imaging can be used as an alternative to the IW-FSE imaging to evaluate meniscal tears.
PURPOSE: We compared intermediate-weighted fast spin-echo (IW-FSE) images with intermediate-weighted fast-recovery FSE (IW-FRFSE) images in the diagnosis of meniscal tears. MATERIALS AND METHODS: First, 64 patients were recruited, and the arthroscopic findings (n = 40) and image analysis (n = 19) identified 59 torn menisci with 36 patients. Both the diagnostic performance and image quality in assessing meniscal tears was evaluated for IW-FSE and IW-FRFSE images using a four-point scale. Signal-to-noise ratio (SNR) calculation was performed for both sets of images. RESULTS: IW-FRFSE image specificity (100 %) for diagnosing the posterior horn of the medial meniscus (MM) tear with reader 1 was significantly higher than that of IW-FSE images (90 %). Mean ratings of the contrast between the lesion and normal signal intensity within the meniscus were significantly higher for the IW-FRFSE image ratings than the IW-FSE images in most meniscal tears. Mean SNRs were significantly higher for IW-FSE images than for IW-FRFSE images (P < 0.05). CONCLUSIONS: IW-FRFSE imaging can be used as an alternative to the IW-FSE imaging to evaluate meniscal tears.
Authors: Rudolf Radlbauer; Friedrich Lomoschitz; Erich Salomonowitz; Knut E Eberhardt; Andreas Stadlbauer Journal: Eur J Radiol Date: 2010-01-21 Impact factor: 3.528
Authors: Naveen Subhas; Amy Kao; Maxime Freire; Joshua M Polster; Nancy A Obuchowski; Carl S Winalski Journal: AJR Am J Roentgenol Date: 2011-08 Impact factor: 3.959
Authors: B A Hargreaves; G E Gold; P K Lang; S M Conolly; J M Pauly; G Bergman; J Vandevenne; D G Nishimura Journal: Magn Reson Med Date: 1999-10 Impact factor: 4.668
Authors: Mike Notohamiprodjo; Annie Horng; Matthias F Pietschmann; Peter E Müller; Wilhelm Horger; Jaeseok Park; Alexander Crispin; José Raya Garcia del Olmo; Sabine Weckbach; Karin A Herrmann; Maximilian F Reiser; Christian Glaser Journal: Invest Radiol Date: 2009-09 Impact factor: 6.016