• Asian Cardiovasc Thorac Ann · Apr 2011

    Comparative Study

    Diffusion-weighted magnetic resonance for pulmonary nodules: 1.5 vs. 3 Tesla.

    • Yasuomi Ohba, Hiroaki Nomori, Takeshi Mori, Kenji Shiraishi, Tomohiro Namimoto, and Kazuhiro Katahira.
    • Department of Thoracic Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
    • Asian Cardiovasc Thorac Ann. 2011 Apr 1;19(2):108-14.

    AbstractThe usefulness of diffusion-weighted magnetic resonance for assessing malignant pulmonary nodules was examined in 58 patients with 76 (58 malignant, 18 benign) pulmonary nodules (1.0-5.6 cm) who underwent 1.5-T and 3-Tesla imaging and (18)F-fluorodeoxyglucose positron-emission tomography prior to surgery. The sensitivities and specificities of these techniques for discriminating benign and malignant nodules were compared. The apparent diffusion coefficients of the pulmonary nodules on 1.5-T and 3-T imaging correlated significantly. The sensitivities and specificities for discriminating benign and malignant lesions were similar among the 3 imaging techniques: 1.5-T imaging, 0.91 and 0.90; 3-T imaging, 0.88 and 0.94; positron-emission tomography, 0.94 and 0.94. The apparent diffusion coefficient on 1.5-T imaging showed a significant reverse correlation with positron-emission tomography, and the correlation between 3-T imaging and positron-emission tomography was marginally significant. Both 1.5-T and 3-T diffusion-weighted magnetic resonance imaging modalities are equally useful for assessing malignant pulmonary nodules.

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