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Diffusion Weighted Imaging Can Distinguish Benign from Malignant Mediastinal Tumors and Mass Lesions: Comparison with Positron Emission Tomography
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 Title & Authors
Diffusion Weighted Imaging Can Distinguish Benign from Malignant Mediastinal Tumors and Mass Lesions: Comparison with Positron Emission Tomography
Usuda, Katsuo; Maeda, Sumiko; Motono, Nozomu; Ueno, Masakatsu; Tanaka, Makoto; Machida, Yuichiro; Matoba, Munetaka; Watanabe, Naoto; Tonami, Hisao; Ueda, Yoshimichi; Sagawa, Motoyasu;
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 Abstract
Background: Diffusion-weighted magnetic resonance imaging (DWI) makes it possible to detect malignant tumors based on the diffusion of water molecules. It is uncertain whether DWI is more useful than positron emission tomography-computed tomography (PET-CT) for distinguishing benign from malignant mediastinal tumors and mass lesions. Materials and Methods: Sixteen malignant mediastinal tumors (thymomas 7, thymic cancers 3, malignant lymphomas 3, malignant germ cell tumors 2, and thymic carcinoid 1) and 12 benign mediastinal tumors or mass lesions were assessed in this study. DWI and PET-CT were performed before biopsy or surgery. Results: The apparent diffusion coefficient (ADC) value () of malignant mediastinal tumors was significantly lower than that () of benign mediastinal tumors and mass lesions (P<0.0001). Maximum standardized uptake value (SUVmax) () of malignant mediastinal tumors was significantly higher than that () of benign mediastinal tumors and mass lesions (P
 Keywords
Mediastinal tumor and mass lesion;diagnosis;magnetic resonance imaging;diffusion-weighted imaging;
 Language
English
 Cited by
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