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Papers Published

1. CE Spritzer, JB Vogler, S Martinez, WE Garrett, GA Johnson, MJ McNamara, J Lohnes, RJ Herfkens, MR imaging of the knee: preliminary results with a 3DFT GRASS pulse sequence., AJR. American journal of roentgenology, UNITED STATES, vol. 150 no. 3 (March, 1988), pp. 597-603 .
   (last updated on 2005/08/03)

   Abstract:
   The knees of 17 patients (18 extremities) with possible meniscal, cruciate ligament, and articular cartilage abnormalities were examined with a three-dimensional Fourier transform (3DFT), gradient-refocused acquisition in a steady state (GRASS) pulse sequence. Arthroscopic confirmation was available in all cases and was the standard for comparison. Thirteen of these extremities were also examined by using a two-dimensional Fourier transform spin-echo pulse sequence with a 2000-msec repetition time and 20- and 80-msec echo time. In these 13 cases, both pulse sequences correctly identified seven of eight meniscal abnormalities. However, interpretation of the 3DFT GRASS images resulted in fewer false-positive meniscal tears (three vs six). Cruciate ligament tears were detected more readily on the 3DFT GRASS images (six vs three with two possible tears on the spin-echo images). These preliminary findings suggest that the overall accuracy of MR imaging of the knee could be improved by including 3DFT gradient-refocused pulse sequences.

   Keywords:
   Adolescent • Adult • Arthroscopy • Female • Humans • Joint Diseases • Knee Injuries • Knee Joint • Magnetic Resonance Imaging* • Male • Middle Aged • anatomy & histology • diagnosis • methods • pathology*