Three-Dimensional Fast Spin-Echo Imaging without Fat Suppression of the Knee: Diagnostic Accuracy Comparison to Fat-Suppressed Imaging on 1.5T MRI.

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Authors: Hee Woo Cho ; Jin-Suck Suh ; Jin-Oh Park ; Hyoung-Sik Kim ; Soo Yoon Chung ; Young Han Lee ; Seok Hahn

MeSH: Adult ; Aged ; Animals ; Arthroscopy/methods* ; Female ; Humans ; Imaging, Three-Dimensional/methods* ; Knee Joint/diagnostic imaging* ; Knee Joint/pathology ; Magnetic Resonance Imaging/methods* ; Male ; Middle Aged ; Phantoms, Imaging ; Predictive Value of Tests ; Reproducibility of Results ; Retrospective Studies ; Sensitivity and Specificity ; Swine

Keywords: Cube ; Knee ; fat suppression ; magnetic resonance imaging ; three-dimensional image

Abstract: PURPOSE:

To evaluate the diagnostic performance of three-dimensional fast spin-echo (3D FSE-Cube) without fat suppression (NFS) for detecting knee lesions, using comparison to 3D FSE-Cube with fat suppression (FS).

MATERIALS AND METHODS:

One hundred twenty-four patients who underwent 1.5T knee magnetic resonance imaging (MRI) scans and 25 subsequent arthroscopic surgeries were retrospectively reviewed. Using arthroscopic results and two-dimensional images as reference standards, diagnostic performances of 3D FSE-Cube-NFS and FS imaging about lesions of ligament, meniscus, subchondral bone marrow edema (BME), and cartilage were compared. Scan parameters of 3D FSE-Cube imaging were previously optimized by a porcine knee phantom.

RESULTS:

No significant differences were observed between detection rates of NFS and FS imaging for detecting lesions of meniscus and cartilage (p>0.05). However, NFS imaging had lower sensitivity for detection of medial collateral ligament (MCL) tears, and lower sensitivity and specificity for detection of BME lesions, compared to FS imaging (p<0.05).

CONCLUSION:

3D FSE-Cube-NFS imaging showed similar diagnostic performance for detecting lesions of meniscus or cartilage compared to FS imaging, unlike MCL or BME lesions.