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Spleen size: how well do linear ultrasound measurements correlate with three-dimensional CT volume assessments?

P M Lamb, BSc, MRCP, FRCR, A Lund, DCR, DMU, R R Kanagasabay, BSc, MRCP, FRCS, A Martin, DCR, J A W Webb, MD, FRCP, FRCR and R H Reznek, FRCP, FRCR

St Bartholomew's Hospital, West Smithfield, London EC1A 7BE, UK



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  		Figure 1. Schematic diagrams to show how linear ultrasound measurements were obtained on longitudinal and transverse sections through the spleen.

 


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  		Figure 2. Axial CT section (left) and three-dimensional reconstructed image of the spleen (right) to demonstrate the summation of cross-sectional areas technique to calculate spleen volume.

 


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  		Figure 3. Histogram to show the range of splenic sizes as assessed by helical CT three-dimensional volumetric analysis.

 


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  		Figure 4. Scatter-plot to demonstrate the correlation between ultrasound measurement of splenic width and CT measurement of splenic volume.

 




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