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Stress-strain index : ウィキペディア英語版 | Stress–strain index The stress–strain index (SSI), of a bone, is a surrogate measure of bone strength determined from a cross-sectional scan by QCT or pQCT (radiological scan). The stress–strain index is used to compare the structural parameters determined by analysis of QCT/pQCT cross-sectional scans to the results of three point bending test. ==Definition== It is calculated using the following formula:
Where: *rmax is the distance of voxel from centre *CD is the apparent cortical (bone) density *ND is the normal (cortical bone) density *ri is the pixel position from the centre *a is the area of a pixel
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Stress–strain index」の詳細全文を読む
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