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Pseudoenhancement of Simulated Renal Cysts in a Phantom Using Different Multidetector CT Scanners

Cedela Abdulla1, Mannudeep K. Kalra1, Sanjay Saini1, Michael M. Maher1, Aamir Ahmad1, Elkan Halpern1 and Stuart G. Silverman2

1 Department of Radiology, Partners HealthCare System, Massachusetts General Hospital and Harvard Medical School, 55 Fruit St., Boston, MA 02114.
2 Department of Radiology, Partners HealthCare System, Brigham and Women's Hospital and Harvard Medical School, 75 Francis St., Boston, MA 02115.



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  		Fig. 1A. —Phantom model of kidney with two renal cysts of different sizes. Drawing of abdominal phantom containing plastic cylinder (curved arrow) used to simulate kidney. Plastic containers representing small (straight thin arrow) and large (straight thick arrow) renal cysts were placed within the kidney phantom. Long straight thin arrow indicates the approximate region of CT scanning.

 


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  		Fig. 1B. —Phantom model of kidney with two renal cysts of different sizes. CT scan shows simulated renal cysts in situ within kidney phantom at background attenuation of 150 H. Smaller cyst shows greater pseudoenhancement than larger cyst.

 

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