J Korean Radiol Soc.  1998 Sep;39(3):575-579. 10.3348/jkrs.1998.39.3.575.

Usefulness of Turbo Spin-Echo MR Imaging in Meniscal Tears of the Knee

• Jeong GY
• Choi CL
• Chung JY
• Han TI
• Jang HI
• Kim JM
• Han HY
• Song MK
• Yang CK

• KMID: 2201285
• DOI: http://doi.org/10.3348/jkrs.1998.39.3.575

Abstract

PURPOSE: To evaluate the usefulness and diagnostic accuracy of turbo spin-echo(TSE) proton-density andT2-weighted images of meniscal tears of the knee.
MATERIALS AND METHODS
We retrospectively evaluated thesensitivity, specificity, and accuracy of TSE proton density and T2-weighted images of meniscal tears confirmedarthroscopically or surgically in 47 patients(98 menisci). The routine TSE parameters used in all patients werethe dual echo sequence with sagittal proton density and T2-weighed images(4000/16, 90/5/2 [TR/effectiveTE/ETL/NEX]), and fat-suppressed coronal proton density and T2-weighted images. The chi-square test was used forstatistical analysis.
RESULTS
The sensitivity, specificity, and accuracy of TSE proton density images for thedetection of meniscal tears were 93.9%, 93.8%, and 93.9%, respectively, in the medial meniscus, and 92.9%, 91.4%,and 91.8% in the lateral. On T2-weighted images the corresponding figures were 87.9%, 93.8%, and 89.8%,respectively, in the medial meniscus, and 64.3%, 91.4%, and 83.7 % in the lateral.
CONCLUSION
With regard tosensitivity and accuracy, TSE proton density images of meniscal tears were superior to TSE T2-weighted images.

Keyword

Knee, MR,; Knee, ligaments; Knee, menisei; Knee, cartilage

MeSH Terms

Humans
Knee*
Magnetic Resonance Imaging*
Menisci, Tibial
Protons
Retrospective Studies
Sensitivity and Specificity
Protons