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Fig. 1

From: Feasibility of non-contrast-enhanced four dimensional (4D) MRA in head and neck tumors, comparison with contrast-enhanced 4D MRA

Fig. 1

Representative images for overall image quality grade 3 (a), 2 (b), and 1 (c). Image a is a selected maximum intensity coronal projection image acquired during coronal contrast-enhanced 4DMRA, and b is a selected maximum intensity coronal projection image acquired during non-contrast-enhanced 4DMRA in a 43-year-old woman with carotid body paraganglioma. Image c is a selected maximum intensity coronal projection image acquired during non-contrast-enhanced 4DMRA in a 64-year-old man with tongue squamous cell carcinoma. 4DMRA Four-dimensional magnetic resonance angiography

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