MR imaging of lesions and detection of malignant tumors
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United States of America Patent
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Oct 30, 2001
Grant Date -
N/A
app pub date -
May 10, 1999
filing date -
May 10, 1999
priority date (Note) -
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Abstract
A 3D MR image is acquired before injection of a contrast agent and an enhanced 3D image is acquired after injection of the contrast agent. The two images are registered and then subtracted to remove background and to highlight lesion voxels. Lesion objects are identified by connecting contiguous lesion objects. Volume and surface area of any continuous lesion object in a discrete digital image are then calculated. Malignant lesions are identified by determining the ratio of volume to surface area for each lesion object. Malignant tumors are identified when this ratio drops below a preset threshold.
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