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Three-tesla imaging of the knee: initial experience

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Abstract

Purpose

To assess 3-T imaging of the knee.

Materials and methods

We reviewed 357 3-T magnetic resonance images of the knee obtained using a dedicated knee coil. From 58 patients who had arthroscopy we determined the sensitivity and specificity for anterior cruciate ligament (ACL) tear and medial and lateral meniscal tear.

Results

A chemical shift artifact showed prominently at 3 T even after improvements had been made by increasing the bandwidth. For complete ACL tear the sensitivity was 100% (95% confidence interval, CI, 75.30–100.00), and the specificity was 97.9% (95% CI 87.7–99.9). For the medial meniscus the sensitivity was 100.00% (95% CI 90.0–100.00), and the specificity was 83.3%(95% CI 66.6–95.3). For the lateral meniscus the sensitivity was 66.7% (95% CI 38.4–88.2), and the specificity was 97.6% (95% CI 87.1–99.9).

Conclusions

In general 3-T imaging allows a favorable display of anatomy and pathology. The lateral meniscus was assessed to be weaker than the other anatomic structures. Three-tesla imaging allows increased signal-to-noise ratio, increased resolution, and faster scanning times.

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Correspondence to Joseph G. Craig.

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Craig, J.G., Go, L., Blechinger, J. et al. Three-tesla imaging of the knee: initial experience. Skeletal Radiol 34, 453–461 (2005). https://doi.org/10.1007/s00256-005-0919-6

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  • DOI: https://doi.org/10.1007/s00256-005-0919-6

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