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High resolution computed tomography of knee menisci
Skeletal Radiology
|January 1, 1987
Summary
Non-contrast computed tomography (CT) shows potential for screening meniscal tears. While not a replacement for arthrography, newer CT scanners offer improved accuracy for selected patients.
Area of Science:
- Radiology
- Orthopedics
- Medical Imaging
Background:
- Meniscal tears are common knee injuries.
- Accurate diagnosis is crucial for effective treatment.
- Arthrography and arthroscopy are current diagnostic standards.
Purpose of the Study:
- To evaluate the diagnostic accuracy of non-contrast high-resolution computed tomography (CT) for detecting meniscal tears.
- To compare the performance of different CT scanner models.
Main Methods:
- Sixty-four menisci from 22 patients were examined using non-contrast CT (GE 8800 and GE 9800 scanners).
- Results were compared against arthrography and/or arthroscopy findings.
- Three observers independently reviewed CT images.
Main Results:
- Overall CT accuracy was 84% (sensitivity 63%, specificity 93%).
- The GE 9800 scanner showed higher accuracy (90%) with 83% sensitivity and 100% specificity.
- Non-contrast CT did not fully replace arthrography or arthroscopy.
Conclusions:
- Non-contrast CT shows promise for screening meniscal tears, particularly with advanced scanners like the GE 9800.
- Further research may validate its use in specific patient populations.
- Improved CT technology could enhance diagnostic capabilities for meniscal injuries.