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FIG 1. Quantitative MR imaging.
A, Photograph of the 47-mm microscopy coil used for T1-weighted and fat-suppressed T2-weighted (SPIR) imaging, as well as for MR sialography.
B and C, MR images (left) were converted to binary data (right). Fat areas (on T1-weighted images) and intact lobule areas (on fat-suppressed T2-weighted images) were calculated as percentages of the maximal cross-sectional areas of the same glands on T1-weighted image (B). On the MR sialogram (C), the numbers and areas of the sialoectatic high-intensity signals were enumerated.
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