Abstract
Purpose
We evaluated the efficacy of using the apparent diffusion coefficient (ADC) to differentiate soft tissue tumors.
Materials and methods
We examined 88 histologically proven tumors (44 benign, 8 intermediate, 36 malignant) using diffusion-weighted magnetic resonance images. Images of the tumors were obtained using a single-shot, spin-echo type echo-planar imaging sequence. The tumors were classified histologically as myxoid or nonmyxoid. We then compared the ADC values of the myxoid and nonmyxoid tumors; the benign and malignant myxoid tumors; and the benign, intermediate, and malignant nonmyxoid tumors.
Results
The mean ADC value of the myxoid tumors (2.08 ± 0.51 × 10−3 mm2/s) was significantly greater than that of the nonmyxoid tumors (1.13 ± 0.40 × 10−3 mm2/s) (P < 0.001). There was no significant difference in the mean ADC values between benign myxoid tumors (2.10 ± 0.50 × 10−3 mm2/s) and malignant myxoid tumors (2.05 ± 0.58 × 10−3 mm2/s). The mean ADC value of benign nonmyxoid tumors (1.31 ± 0.46 × 10−3 mm2/s) was significantly higher than that of malignant nonmyxoid tumors (0.94 ± 0.25 × 10−3 mm2/s) (P < 0.001).
Conclusion
The ADC value might be useful for diagnosing the malignancy of nonmyxoid soft tissue tumors.
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Nagata, S., Nishimura, H., Uchida, M. et al. Diffusion-weighted imaging of soft tissue tumors: usefulness of the apparent diffusion coefficient for differential diagnosis. Radiat Med 26, 287–295 (2008). https://doi.org/10.1007/s11604-008-0229-8
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DOI: https://doi.org/10.1007/s11604-008-0229-8