File:CT measurement of kidney stone in soft tissue and bone window.jpg
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CT_measurement_of_kidney_stone_in_soft_tissue_and_bone_window.jpg (417 × 339 pixels, file size: 14 KB, MIME type: image/jpeg)
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[edit]DescriptionCT measurement of kidney stone in soft tissue and bone window.jpg |
English: Measurement of a kidney stone in a CT window for soft tissue (width of 400 HU, center at 50 HU) and bone window (W1800,C400). The kidney stone was directly measured outside the body to be 5.6 mm, and is here seen after placement in a potato (whose CT attenuation is regarded as comparable to that of a kidney1), in turn placed in a human-shaped water tank. The lines in the images show the same measurement of 5.6 mm. Even without knowing this reference point, the mean maximal value made by 6 investigators in the CT image (5.4 mm) was only 0.2 mm off the direct measure outside the body when using a HU cutoff of 150.
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Date | |
Source | Own work |
Author | Mikael Häggström, M.D. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:40, 29 May 2018 | 417 × 339 (14 KB) | Mikael Häggström (talk | contribs) | User created page with UploadWizard |
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