OBJECTIVE: The purpose of this study was to compare the proton-density (PD)-weighted fast spin-echo (FSE) and fast-recovery FSE (FRFSE) sequences for the evaluation of the anatomical structures of the knee. METHOD: 24 healthy volunteers who underwent MRI by both sagittal PD-weighted FSE and FRFSE sequences were evaluated. The signal-to-noise ratio, contrast-to-noise ratio (CNR) and anatomical detail visualisation were compared for the two techniques. RESULTS: The mean CNRs and reader ratings for both readers were significantly higher for the PD-weighted FRFSE images than for the PD-weighted FSE images in the cartilages/the femorotibial joint effusion and the cruciate ligaments/the effusion around the cruciate ligaments; however, the mean CNRs and reader ratings for both readers were significantly higher for the PD-weighted FSE sequences than for the PD-weighted FRFSE sequences in the cartilages/the menisci and the cruciate ligaments. CONCLUSIONS: The main advantages of the PD-weighted FRFSE sequence are the increase in contrast between fluid and non-fluid tissues and the time saved by using the procedure. However, in the absence of joint effusion, the PD-weighted FRFSE sequence generates a poorer contrast between the cartilage and meniscus, the cruciate ligaments and fat of the intercondylar fossa.
OBJECTIVE: The purpose of this study was to compare the proton-density (PD)-weighted fast spin-echo (FSE) and fast-recovery FSE (FRFSE) sequences for the evaluation of the anatomical structures of the knee. METHOD: 24 healthy volunteers who underwent MRI by both sagittal PD-weighted FSE and FRFSE sequences were evaluated. The signal-to-noise ratio, contrast-to-noise ratio (CNR) and anatomical detail visualisation were compared for the two techniques. RESULTS: The mean CNRs and reader ratings for both readers were significantly higher for the PD-weighted FRFSE images than for the PD-weighted FSE images in the cartilages/the femorotibial joint effusion and the cruciate ligaments/the effusion around the cruciate ligaments; however, the mean CNRs and reader ratings for both readers were significantly higher for the PD-weighted FSE sequences than for the PD-weighted FRFSE sequences in the cartilages/the menisci and the cruciate ligaments. CONCLUSIONS: The main advantages of the PD-weighted FRFSE sequence are the increase in contrast between fluid and non-fluid tissues and the time saved by using the procedure. However, in the absence of joint effusion, the PD-weighted FRFSE sequence generates a poorer contrast between the cartilage and meniscus, the cruciate ligaments and fat of the intercondylar fossa.
Authors: M A Bredella; P F Tirman; C G Peterfy; M Zarlingo; J F Feller; F W Bost; J P Belzer; T K Wischer; H K Genant Journal: AJR Am J Roentgenol Date: 1999-04 Impact factor: 3.959
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
Authors: E M Escobedo; J C Hunter; G C Zink-Brody; A J Wilson; S D Harrison; D J Fisher Journal: AJR Am J Roentgenol Date: 1996-11 Impact factor: 3.959
Authors: Osamah M Abdulaal; Louise Rainford; Peter MacMahon; Eoin Kavanagh; Marie Galligan; James Cashman; Allison McGee Journal: Eur Radiol Date: 2017-04-21 Impact factor: 5.315