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CT Histogram Analysis in Pathologically Proven Adrenal Masses

Erick M. Remer1, Gaspar A. Motta-Ramirez1, Laura B. Shepardson1, Amir H. Hamrahian2 and Brian R. Herts1

1 Division of Radiology, Cleveland Clinic Foundation, 9500 Euclid Avenue, Desk A21, Cleveland, Ohio 44195.
2 Department of Endocrinology and Metabolism, Cleveland Clinic Foundation, Cleveland, Ohio.


Figure 1
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  		Fig. 1A —48-year-old woman with left adrenal pheochromocytoma. Unenhanced CT scan shows region of interest (ROI) with mean attenuation of 38 H. Histogram superimposed on image shows distribution of pixels in ROI.

 

Figure 2
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  		Fig. 1B —48-year-old woman with left adrenal pheochromocytoma. Unenhanced histogram analysis shows 13 negative pixels.

 

Figure 3
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  		Fig. 1C —48-year-old woman with left adrenal pheochromocytoma. Enhanced image shows mean attenuation of 86 H.

 

Figure 4
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  		Fig. 1D —48-year-old woman with left adrenal pheochromocytoma. Enhanced histogram analysis shows zero negative pixels.

 

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