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Insights into Imaging
Fig. 9 | Insights into Imaging

Fig. 9

From: Spectral CT of the abdomen: Where are we now?

Fig. 9

Side-by-side images showing uric acid evaluation in two different patients evaluated for nephrolithiasis. a–c showing a calcium-containing stone in the distal ureter, (d–f) showing uric acid stones in the lower pole calix and proximal ureter, proven as uric acid stones by laboratory evaluation following lithotripsy and stenting. a, d conventional anatomic images, (b, e) "uric acid removed" overlay images, on which uric acid is removed from the image leaving a black pixels, and (c, f) are atomic number images showing the different atomic numbers of the different types of stones

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